diff --git a/completions-core/7z.bash b/completions-core/7z.bash
index 5317660..8de77ed 100644
--- a/completions-core/7z.bash
+++ b/completions-core/7z.bash
@@ -95,7 +95,7 @@ _comp_cmd_7z()
     else
         if [[ ${words[1]} == d ]]; then
             _comp_compgen_split -l -- "$(
-                "$1" l "${words[2]}" -slt 2>/dev/null | command sed -n \
+                "$1" l "${words[2]}" -slt 2>/dev/null | command gsed -n \
                     's/^Path = \(.*\)$/\1/p' 2>/dev/null | _comp_tail -n +2
             )"
             compopt -o filenames
diff --git a/completions-core/abook.bash b/completions-core/abook.bash
index 22d5661..f983a23 100644
--- a/completions-core/abook.bash
+++ b/completions-core/abook.bash
@@ -23,11 +23,11 @@ _comp_cmd_abook()
     case $prev in
         --informat)
             _comp_compgen_split -- "$("$1" --formats |
-                command sed -n -e 's/^'$'\t''\([a-z]*\).*/\1/p' -e '/^$/q')"
+                command gsed -n -e 's/^'$'\t''\([a-z]*\).*/\1/p' -e '/^$/q')"
             ;;
         --outformat)
             _comp_compgen_split -- "$("$1" --formats |
-                command sed -n -e '/^$/,$s/^'$'\t''\([a-z]*\).*/\1/p')"
+                command gsed -n -e '/^$/,$s/^'$'\t''\([a-z]*\).*/\1/p')"
             ;;
         --infile)
             _comp_compgen -- -W stdin
diff --git a/completions-core/alias.bash b/completions-core/alias.bash
index 60a9ecd..cf1c5f6 100644
--- a/completions-core/alias.bash
+++ b/completions-core/alias.bash
@@ -13,7 +13,7 @@ _comp_cmd_alias()
             _comp_compgen -- -A alias
             ;;
         *=)
-            COMPREPLY=("$(alias "${cur%=}" 2>/dev/null | command sed \
+            COMPREPLY=("$(alias "${cur%=}" 2>/dev/null | command gsed \
                 -e 's|^alias '"$cur"'\(.*\)$|\1|')")
             ;;
     esac
diff --git a/completions-core/alternatives.bash b/completions-core/alternatives.bash
index 4fffe64..40f16fa 100644
--- a/completions-core/alternatives.bash
+++ b/completions-core/alternatives.bash
@@ -83,7 +83,7 @@ _comp_cmd_alternatives()
             _comp_cmd_alternatives__installed
             ;;
         *)
-            _comp_compgen_help - <<<"$(LANG=C "$1" --help 2>&1 | command sed '
+            _comp_compgen_help - <<<"$(LANG=C "$1" --help 2>&1 | command gsed '
                 /usage:/,/^[[:space:]]*$/{
                   s/^\([[:space:]]*usage:\)\{0,1\}[[:space:]]*[^[:space:]]*alternatives /  /
                   s/^[[:space:]]*\[\(-.*\)\]/  \1/
diff --git a/completions-core/appdata-validate.bash b/completions-core/appdata-validate.bash
index 426870d..d127dc0 100644
--- a/completions-core/appdata-validate.bash
+++ b/completions-core/appdata-validate.bash
@@ -10,7 +10,7 @@ _comp_cmd_appdata_validate()
             return
             ;;
         --output-format)
-            _comp_compgen_split -- "$("$1" --help | command sed -ne \
+            _comp_compgen_split -- "$("$1" --help | command gsed -ne \
                 's/--output-format.*\[\(.*\)\]/\1/' -e 's/|/ /gp')"
             return
             ;;
diff --git a/completions-core/apt-get.bash b/completions-core/apt-get.bash
index 36e24f0..29baa45 100644
--- a/completions-core/apt-get.bash
+++ b/completions-core/apt-get.bash
@@ -80,7 +80,7 @@ _comp_cmd_apt_get()
             # Prefer `apt-cache` in the same dir as command
             local pathcmd
             pathcmd=$(type -P -- "$1") && local PATH=${pathcmd%/*}:$PATH
-            _comp_compgen_split -- "$(apt-cache policy | command sed -ne '
+            _comp_compgen_split -- "$(apt-cache policy | command gsed -ne '
                 s/^ *release.*[ ,]o=Debian,a=\([[:alnum:]]*\).*/\1/p
                 s/^ *release.*[ ,]o=Ubuntu,a=\([[:alnum:]]*\).*/\1/p
             ')"
diff --git a/completions-core/aptitude.bash b/completions-core/aptitude.bash
index 7b152fd..fc40a39 100644
--- a/completions-core/aptitude.bash
+++ b/completions-core/aptitude.bash
@@ -53,13 +53,13 @@ _comp_cmd_aptitude()
             ;;
         --target-release | --default-release | -${noargopts}t)
             _comp_compgen_split -l -- "$(apt-cache policy |
-                command sed -ne 's/.*release.o=Debian,a=\([_[:alnum:]]*\).*/\1/p')"
+                command gsed -ne 's/.*release.o=Debian,a=\([_[:alnum:]]*\).*/\1/p')"
             return
             ;;
     esac
 
     if [[ $cur == -* ]]; then
-        _comp_compgen -R help - <<<"$("$1" --help 2>&1 | command sed -e \
+        _comp_compgen -R help - <<<"$("$1" --help 2>&1 | command gsed -e \
             's/--with(out)-recommends/--without-recommends\n--with-recommends/')"
         ((${#COMPREPLY[@]})) || return 0
 
diff --git a/completions-core/arp.bash b/completions-core/arp.bash
index 0df748f..f52f964 100644
--- a/completions-core/arp.bash
+++ b/completions-core/arp.bash
@@ -37,7 +37,7 @@ _comp_cmd_arp()
     _comp_count_args -a "@(--device|--protocol|--file|--hw-type|-${noargopts}[iApfHt])"
     case $REPLY in
         1)
-            local ips=$("$1" -an | command sed -ne \
+            local ips=$("$1" -an | command gsed -ne \
                 's/.*(\([0-9]\{1,3\}\(\.[0-9]\{1,3\}\)\{3\}\)).*/\1/p')
             _comp_compgen -- -W '$ips'
             ;;
diff --git a/completions-core/carton.bash b/completions-core/carton.bash
index 0617e74..711a239 100644
--- a/completions-core/carton.bash
+++ b/completions-core/carton.bash
@@ -3,7 +3,7 @@
 _comp_cmd_carton__commands()
 {
     local cmds=$("$1" usage 2>&1 |
-        command sed -ne '/.*command.* is one of/{n;p;q;}')
+        command gsed -ne '/.*command.* is one of/{n;p;q;}')
     _comp_compgen -aF $' \t\n,' -- -W "$cmds"
 }
 
diff --git a/completions-core/ccze.bash b/completions-core/ccze.bash
index 337d7f3..327bf0c 100644
--- a/completions-core/ccze.bash
+++ b/completions-core/ccze.bash
@@ -30,7 +30,7 @@ _comp_cmd_ccze()
             ;;
         --plugin | -${noargopts}p)
             _comp_compgen_split -- "$("$1" --list-plugins |
-                command sed -ne 's/^\([a-z0-9]\{1,\}\)[[:space:]]\{1,\}|.*/\1/p')"
+                command gsed -ne 's/^\([a-z0-9]\{1,\}\)[[:space:]]\{1,\}|.*/\1/p')"
             return
             ;;
     esac
diff --git a/completions-core/cfrun.bash b/completions-core/cfrun.bash
index f29fab2..54a1188 100644
--- a/completions-core/cfrun.bash
+++ b/completions-core/cfrun.bash
@@ -33,7 +33,7 @@ _comp_cmd_cfrun()
                 done
                 [[ ! -f $hostfile ]] && return
 
-                _comp_compgen_split -- "$(command grep -v -E '=|^$|^#' \
+                _comp_compgen_split -- "$(command ggrep -v -E '=|^$|^#' \
                     "$hostfile")"
             fi
             ;;
diff --git a/completions-core/checksec.bash b/completions-core/checksec.bash
index 0ba00ab..4ccc937 100644
--- a/completions-core/checksec.bash
+++ b/completions-core/checksec.bash
@@ -27,11 +27,11 @@ _comp_cmd_checksec()
             ;;
         --format)
             _comp_compgen_split -- "$("$1" --help 2>/dev/null |
-                command sed -ne 's/[{,}]/ /g;s/^[[:space:]]*--format=//p')"
+                command gsed -ne 's/[{,}]/ /g;s/^[[:space:]]*--format=//p')"
             ;;
         --output)
             _comp_compgen_split -- "$("$1" --help 2>/dev/null |
-                command sed -ne 's/[{,}]/ /g;s/^[[:space:]]*--output=//p')"
+                command gsed -ne 's/[{,}]/ /g;s/^[[:space:]]*--output=//p')"
             ;;
     esac
 
diff --git a/completions-core/complete.bash b/completions-core/complete.bash
index 451d660..0f7f496 100644
--- a/completions-core/complete.bash
+++ b/completions-core/complete.bash
@@ -29,7 +29,7 @@ _comp_cmd_complete()
             return
             ;;
         -*p | -*r)
-            _comp_compgen_split -l -- "$(complete -p | command sed -e 's|.* ||')"
+            _comp_compgen_split -l -- "$(complete -p | command gsed -e 's|.* ||')"
             return
             ;;
     esac
diff --git a/completions-core/configure.bash b/completions-core/configure.bash
index 677058e..1271f10 100644
--- a/completions-core/configure.bash
+++ b/completions-core/configure.bash
@@ -33,7 +33,7 @@ _comp_cmd_configure()
     if [[ ${BASH_COMPLETION_CMD_CONFIGURE_HINTS-} ]]; then
         _comp_compgen_split -- "$("$1" --help 2>&1 |
             _comp_awk '/^  --[A-Za-z]/ { print $1; \
-            if ($2 ~ /--[A-Za-z]/) print $2 }' | command sed -e 's/[[,].*//g')"
+            if ($2 ~ /--[A-Za-z]/) print $2 }' | command gsed -e 's/[[,].*//g')"
         [[ ${COMPREPLY-} == *=* ]] && compopt -o nospace
     else
         _comp_compgen_help
diff --git a/completions-core/cpan2dist.bash b/completions-core/cpan2dist.bash
index 08d9766..8001798 100644
--- a/completions-core/cpan2dist.bash
+++ b/completions-core/cpan2dist.bash
@@ -29,7 +29,7 @@ _comp_cmd_cpan2dist()
         done
         [[ $packagelist ]] && _comp_split COMPREPLY "$(zgrep "^${cur//-/::}" \
             "$packagelist" 2>/dev/null | _comp_awk '{print $1}' |
-            command sed -e 's/::/-/g')"
+            command gsed -e 's/::/-/g')"
     fi
 } &&
     complete -F _comp_cmd_cpan2dist -o default cpan2dist
diff --git a/completions-core/curl.bash b/completions-core/curl.bash
index 1d0ea5e..25168e0 100644
--- a/completions-core/curl.bash
+++ b/completions-core/curl.bash
@@ -94,7 +94,7 @@ _comp_cmd_curl()
         --engine)
             local engines=$(
                 "$1" --engine list 2>/dev/null |
-                    command grep "^[[:space:]]"
+                    command ggrep "^[[:space:]]"
             )
             _comp_compgen -- -W '$engines list'
             return
@@ -144,7 +144,7 @@ _comp_cmd_curl()
             return
             ;;
         --proto-default)
-            _comp_compgen_split "$("$1" --version 2>/dev/null | command sed -n 's/Protocols://p')"
+            _comp_compgen_split "$("$1" --version 2>/dev/null | command gsed -n 's/Protocols://p')"
             ;;
         --pubkey)
             _comp_compgen -x ssh identityfile pub
diff --git a/completions-core/cvs.bash b/completions-core/cvs.bash
index e9aec36..a208ed5 100644
--- a/completions-core/cvs.bash
+++ b/completions-core/cvs.bash
@@ -262,7 +262,7 @@ _comp_cmd_cvs()
                     # far, but other changes (something other than
                     # changed/removed/new) may be missing.
                     _comp_compgen -a split -- "$(cvs -q diff --brief 2>&1 |
-                        command sed -ne '
+                        command gsed -ne '
                             # changed
                             s/^Files [^ ]* and \([^ ]*\) differ$/\1/p
                             # new/removed
diff --git a/completions-core/dict.bash b/completions-core/dict.bash
index 4f2b505..171add9 100644
--- a/completions-core/dict.bash
+++ b/completions-core/dict.bash
@@ -4,7 +4,7 @@ _comp_cmd_dict__compgen_dictdata()
 {
     # shellcheck disable=SC2086
     _comp_compgen_split -- "$(
-        "$@" 2>/dev/null | command sed -ne \
+        "$@" 2>/dev/null | command gsed -ne \
             's/^[[:blank:]]\{1,\}\([^[:blank:]]*\).*$/\1/p'
     )"
 }
@@ -60,7 +60,7 @@ _comp_cmd_dict()
         # in a pattern instead.
         if [[ $cur == +([-A-Za-z0-9/.]) ]]; then
             _comp_compgen_split -- "$(
-                command grep "^${cur//./\\.}" "$dictfile"
+                command ggrep "^${cur//./\\.}" "$dictfile"
             )"
         else
             _comp_compgen_split -- "$(cat "$dictfile")"
diff --git a/completions-core/dmypy.bash b/completions-core/dmypy.bash
index 302c0cc..585a7c7 100644
--- a/completions-core/dmypy.bash
+++ b/completions-core/dmypy.bash
@@ -38,8 +38,8 @@ _comp_cmd_dmypy()
 
     if [[ ! $has_cmd ]]; then
         local cmds=$("$1" --help 2>&1 |
-            command sed -ne '/positional arguments/{p;n;p;q;}' |
-            command sed -ne 's/{\(.*\)}/\1/p')
+            command gsed -ne '/positional arguments/{p;n;p;q;}' |
+            command gsed -ne 's/{\(.*\)}/\1/p')
         _comp_compgen -F , -- -W '$cmds'
         return
     fi
diff --git a/completions-core/dnssec-keygen.bash b/completions-core/dnssec-keygen.bash
index e4619bc..03f56e5 100644
--- a/completions-core/dnssec-keygen.bash
+++ b/completions-core/dnssec-keygen.bash
@@ -3,9 +3,9 @@
 _comp_cmd_dnssec_keygen__optarg()
 {
     local args=$("$1" -h 2>&1 |
-        command sed -e 's/|/ /g' -e 's/(.*//' \
+        command gsed -e 's/|/ /g' -e 's/(.*//' \
             -ne '/^[[:space:]]*'"$2"'/,/^[[:space:]]*[(-]/p' |
-        command sed -e 's/^[[:space:]]*'"$2"'.*://' -e '/^[[:space:]]*-/d')
+        command gsed -e 's/^[[:space:]]*'"$2"'.*://' -e '/^[[:space:]]*-/d')
     _comp_compgen -a -- -W '$args'
 }
 
diff --git a/completions-core/dot.bash b/completions-core/dot.bash
index feb2ab0..a386661 100644
--- a/completions-core/dot.bash
+++ b/completions-core/dot.bash
@@ -14,14 +14,14 @@ _comp_cmd_dot()
         -T*)
             # generate langs
             _comp_compgen -P "-T" split -- "$(
-                "$1" -TNON_EXISTENT 2>&1 | command sed -ne 's/.*one of://p'
+                "$1" -TNON_EXISTENT 2>&1 | command gsed -ne 's/.*one of://p'
             )"
             return
             ;;
         -K*)
             # generate layouts
             _comp_compgen -P "-K" split -- "$(
-                "$1" -KNON_EXISTENT 2>&1 | command sed -ne 's/.*one of://p'
+                "$1" -KNON_EXISTENT 2>&1 | command gsed -ne 's/.*one of://p'
             )"
             return
             ;;
diff --git a/completions-core/ebtables.bash b/completions-core/ebtables.bash
index 0b8dd39..8bc7dd9 100644
--- a/completions-core/ebtables.bash
+++ b/completions-core/ebtables.bash
@@ -18,7 +18,7 @@ _comp_cmd_ebtables()
         -${noargopts}[AIDPFXLZ])
             _comp_compgen_split -- "$(
                 "$1" ${table:+-t "$table"} -L 2>/dev/null |
-                    command sed -ne "$chain"
+                    command gsed -ne "$chain"
             )"
             ;;
         -${noargopts}t)
@@ -29,17 +29,17 @@ _comp_cmd_ebtables()
                 _comp_compgen -- -W '$targets'
                 _comp_compgen -a split -X '@(INPUT|OUTPUT|FORWARD)' \
                     -- "$("$1" ${table:+-t "$table"} -L 2>/dev/null |
-                        command sed -ne "$chain")"
+                        command gsed -ne "$chain")"
             elif [[ $table == "nat" ]]; then
                 _comp_compgen -- -W '$targets'
                 _comp_compgen -a split -X '@(OUTPUT|PREROUTING|POSTROUTING)' \
                     -- "$("$1" -t "$table" -L 2>/dev/null |
-                        command sed -ne "$chain")"
+                        command gsed -ne "$chain")"
             elif [[ $table == "broute" ]]; then
                 _comp_compgen -- -W 'ACCEPT DROP'
                 _comp_compgen -a split -X 'BROUTING' \
                     -- "$("$1" -t "$table" -L 2>/dev/null |
-                        command sed -ne "$chain")"
+                        command gsed -ne "$chain")"
             fi
             ;;
         *)
diff --git a/completions-core/fbgs.bash b/completions-core/fbgs.bash
index 7267e78..e130684 100644
--- a/completions-core/fbgs.bash
+++ b/completions-core/fbgs.bash
@@ -11,7 +11,7 @@ _comp_cmd_fbgs()
             return
             ;;
         -m | --mode)
-            _comp_compgen_split -- "$(command sed \
+            _comp_compgen_split -- "$(command gsed \
                 -n '/^mode/{s/^mode \{1,\}"\([^"]\{1,\}\)"/\1/g;p;}' \
                 /etc/fb.modes 2>/dev/null)"
             return
diff --git a/completions-core/fbi.bash b/completions-core/fbi.bash
index 906074f..ee491e4 100644
--- a/completions-core/fbi.bash
+++ b/completions-core/fbi.bash
@@ -19,7 +19,7 @@ _comp_cmd_fbi()
             return
             ;;
         -m | --mode)
-            _comp_compgen_split -- "$(command sed \
+            _comp_compgen_split -- "$(command gsed \
                 -n '/^mode/{s/^mode \{1,\}"\([^"]\{1,\}\)"/\1/g;p;}' \
                 /etc/fb.modes 2>/dev/null)"
             return
diff --git a/completions-core/fio.bash b/completions-core/fio.bash
index 36ac55c..1a37209 100644
--- a/completions-core/fio.bash
+++ b/completions-core/fio.bash
@@ -2,7 +2,7 @@
 
 _comp_cmd_fio__compgen_engines()
 {
-    _comp_compgen_split -F $'\t\n' -- "$("$1" --enghelp 2>/dev/null | command grep '^[[:space:]]')"
+    _comp_compgen_split -F $'\t\n' -- "$("$1" --enghelp 2>/dev/null | command ggrep '^[[:space:]]')"
 }
 
 _comp_cmd_fio()
diff --git a/completions-core/fprintd-enroll.bash b/completions-core/fprintd-enroll.bash
index e19fe57..afe248f 100644
--- a/completions-core/fprintd-enroll.bash
+++ b/completions-core/fprintd-enroll.bash
@@ -15,7 +15,7 @@ _comp_cmd_fprintd_enroll()
             # Only -enroll may output a message with valid options in it
             _comp_compgen_split -- "$(
                 "${1/-verify/-enroll}" --finger no-such-finger 2>&1 |
-                    command sed \
+                    command gsed \
                         -e s/,//g -ne 's/^.*Name must be one of \(.*\)/\1/p'
             )"
             return
diff --git a/completions-core/gcc.bash b/completions-core/gcc.bash
index 431fb73..6e32408 100644
--- a/completions-core/gcc.bash
+++ b/completions-core/gcc.bash
@@ -12,7 +12,7 @@ _comp_cmd_gcc()
             local cc=$("$1" -print-prog-name=cc1 2>/dev/null)
             [[ $cc ]] || return
             _comp_compgen_split -- "$("$cc" --help 2>/dev/null | tr '\t' ' ' |
-                command sed -n 's/^ \{1,\}\(-[^][ <>]*\).*/\1/p')"
+                command gsed -n 's/^ \{1,\}\(-[^][ <>]*\).*/\1/p')"
             [[ ${COMPREPLY-} == *= ]] && compopt -o nospace
         else
             _comp_compgen_filedir
@@ -63,7 +63,7 @@ _comp_cmd_gcc__setup_cmd()
     local REPLY
     _comp_realcommand "$1"
     if [[ $REPLY == *$2* ]] ||
-        "$1" --version 2>/dev/null | command grep -q GCC; then
+        "$1" --version 2>/dev/null | command ggrep -q GCC; then
         complete -F _comp_cmd_gcc "$1"
     else
         complete -F _comp_complete_minimal "$1"
diff --git a/completions-core/gdb.bash b/completions-core/gdb.bash
index 9135e45..c1d1110 100644
--- a/completions-core/gdb.bash
+++ b/completions-core/gdb.bash
@@ -31,7 +31,7 @@ _comp_cmd_gdb()
                 IFS=$' \t\n'
                 find ${path_array[@]+"${path_array[@]}"} . -name . -o \
                     -type d -prune -o -perm -u+x -print 2>/dev/null |
-                    command sed 's|^.*/||' | sort -u
+                    command gsed 's|^.*/||' | sort -u
             )"
         fi
     elif ((cword == 2)); then
diff --git a/completions-core/gnokii.bash b/completions-core/gnokii.bash
index 34a03bb..c782dd0 100644
--- a/completions-core/gnokii.bash
+++ b/completions-core/gnokii.bash
@@ -24,7 +24,7 @@ _comp_cmd_gnokii()
                 [[ -f $config_file ]] && break
             done
             [[ ! -f $config_file ]] && return
-            _comp_compgen_split -- "$(command sed -n \
+            _comp_compgen_split -- "$(command gsed -n \
                 's/^\[phone_\(.*\)\]/\1/p' "$config_file")"
             return
             ;;
@@ -223,7 +223,7 @@ _comp_cmd_gnokii()
     # bracket expressions [...] in POSIX sed for the future compatibility.
     local main_cmd
     _comp_split -l main_cmd "$(printf '%s\n' "${all_cmd[@]}" |
-        command sed -e '/--config/d;/--phone/d;s/[][\\(){}|^$*+?.]/\\&/g')"
+        command gsed -e '/--config/d;/--phone/d;s/[][\\(){}|^$*+?.]/\\&/g')"
     # don't provide main command completions if one is
     # already on the command line
     local IFS='|'
diff --git a/completions-core/gpg.bash b/completions-core/gpg.bash
index b942342..edb35a2 100644
--- a/completions-core/gpg.bash
+++ b/completions-core/gpg.bash
@@ -20,7 +20,7 @@ _comp_cmd_gpg()
             --nrsign-key | --nrlsign-key | --try-secret-key | -${noargopts}k)
             # return list of public keys
             _comp_compgen_split -- "$("$1" --list-keys 2>/dev/null |
-                command sed -ne \
+                command gsed -ne \
                     's@^pub.*/\([^ ]*\).*$@\1@p' -ne \
                     's@^.*\(<\([^>]*\)>\).*$@\2@p')"
             return
@@ -29,14 +29,14 @@ _comp_cmd_gpg()
             --export-secret-subkeys | -${noargopts}K)
             # return list of secret keys
             _comp_compgen_split -- "$("$1" --list-secret-keys 2>/dev/null |
-                command sed -ne 's@^.*<\([^>]*\)>.*$@\1@p')"
+                command gsed -ne 's@^.*<\([^>]*\)>.*$@\1@p')"
             return
             ;;
         --recipient | -${noargopts}r)
             _comp_compgen_split -- "$("$1" --list-keys 2>/dev/null |
-                command sed -ne 's@^.*<\([^>]*\)>.*$@\1@p')"
+                command gsed -ne 's@^.*<\([^>]*\)>.*$@\1@p')"
             if [[ -e ~/.gnupg/gpg.conf ]]; then
-                _comp_compgen -a split -- "$(command sed -ne \
+                _comp_compgen -a split -- "$(command gsed -ne \
                     's@^[[:blank:]]*group[[:blank:]][[:blank:]]*\([^=]*\).*$@\1@p' \
                     ~/.gnupg/gpg.conf)"
             fi
diff --git a/completions-core/gpg2.bash b/completions-core/gpg2.bash
index d4b878a..24f4d46 100644
--- a/completions-core/gpg2.bash
+++ b/completions-core/gpg2.bash
@@ -21,16 +21,16 @@ _comp_cmd_gpg2()
             --locate-keys | --refresh-keys)
             # return list of public keys
             _comp_compgen_split -- "$("$1" --list-keys 2>/dev/null |
-                command sed -ne \
+                command gsed -ne \
                     's@^pub.*/\([^ ]*\).*$@\1@p' -ne \
                     's@^.*\(<\([^>]*\)>\).*$@\2@p')"
             return
             ;;
         --recipient | -${noargopts}r)
             _comp_compgen_split -- "$("$1" --list-keys 2>/dev/null |
-                command sed -ne 's@^.*<\([^>]*\)>.*$@\1@p')"
+                command gsed -ne 's@^.*<\([^>]*\)>.*$@\1@p')"
             if [[ -e ~/.gnupg/gpg.conf ]]; then
-                _comp_compgen -a split -- "$(command sed -ne \
+                _comp_compgen -a split -- "$(command gsed -ne \
                     's@^[[:blank:]]*group[[:blank:]][[:blank:]]*\([^=]*\).*$@\1@p' \
                     ~/.gnupg/gpg.conf)"
             fi
diff --git a/completions-core/gssdp-discover.bash b/completions-core/gssdp-discover.bash
index cae232c..548d6f4 100644
--- a/completions-core/gssdp-discover.bash
+++ b/completions-core/gssdp-discover.bash
@@ -16,7 +16,7 @@ _comp_cmd_gssdp_discover()
         --message-type | -m)
             [[ $1 == *gssdp-discover ]] || return
             local types=$("$1" --help 2>&1 |
-                command sed -ne 's/^.*--message-type=.*(\([^)]*\))$/\1/p')
+                command gsed -ne 's/^.*--message-type=.*(\([^)]*\))$/\1/p')
             _comp_compgen -F $' \t\n,' -- -W "$types"
             return
             ;;
diff --git a/completions-core/iconv.bash b/completions-core/iconv.bash
index 90ff5b6..64100ca 100644
--- a/completions-core/iconv.bash
+++ b/completions-core/iconv.bash
@@ -15,7 +15,7 @@ _iconv_charsets()
 _comp_cmd_iconv__compgen_charsets()
 {
     _comp_compgen_split -X ... -- "$("$1" -l |
-        command sed -e 's@/*$@@' -e 's/[,()]//g')"
+        command gsed -e 's@/*$@@' -e 's/[,()]//g')"
 }
 
 _comp_cmd_iconv()
diff --git a/completions-core/ifstat.bash b/completions-core/ifstat.bash
index 6f0ff23..32580ae 100644
--- a/completions-core/ifstat.bash
+++ b/completions-core/ifstat.bash
@@ -22,8 +22,8 @@ _comp_cmd_ifstat()
             if ! {
                 "$1" --help 2>&1 || :
             } |
-                command grep -q -- '-d.*--scan'; then
-                _comp_compgen_split -- "$("$1" -v | command sed -e 's/[,.]//g' \
+                command ggrep -q -- '-d.*--scan'; then
+                _comp_compgen_split -- "$("$1" -v | command gsed -e 's/[,.]//g' \
                     -ne 's/^.*drivers://p')"
             fi
             return
@@ -34,7 +34,7 @@ _comp_cmd_ifstat()
             if ! {
                 "$1" --help 2>&1 || :
             } |
-                command grep -q -- '-s.*--noupdate'; then
+                command ggrep -q -- '-s.*--noupdate'; then
                 _comp_compgen_known_hosts
                 return
             fi
@@ -45,7 +45,7 @@ _comp_cmd_ifstat()
             ! {
                 "$1" --help 2>&1 || :
             } |
-                command grep -q -- '-t.*--interval' || return
+                command ggrep -q -- '-t.*--interval' || return
             ;;
         --extended | -${noargopts}x)
             # iproute2: parse xstat types
diff --git a/completions-core/inotifywait.bash b/completions-core/inotifywait.bash
index b437420..207fc74 100644
--- a/completions-core/inotifywait.bash
+++ b/completions-core/inotifywait.bash
@@ -6,7 +6,7 @@ _comp_cmd_inotifywait__events()
     # tab. Word following the tab is event name, others are line
     # wrapped explanations.
     _comp_compgen -a split -- "$("$1" --help 2>/dev/null |
-        command sed -e '/^Events:/,/^[^'$'\t'']/!d' \
+        command gsed -e '/^Events:/,/^[^'$'\t'']/!d' \
             -ne 's/^'$'\t''\([^[:blank:]]\{1,\}\)[[:blank:]].*/\1/p')"
 }
 
diff --git a/completions-core/invoke-rc.d.bash b/completions-core/invoke-rc.d.bash
index a98c4c9..b9d8ff3 100644
--- a/completions-core/invoke-rc.d.bash
+++ b/completions-core/invoke-rc.d.bash
@@ -23,7 +23,7 @@ _comp_cmd_invoke_rc_d()
 
     local sysvdirs
     if _comp_sysvdirs && [[ -x ${sysvdirs[0]}/$prev ]]; then
-        _comp_compgen_split -- "$(command sed -e 'y/|/ /' \
+        _comp_compgen_split -- "$(command gsed -e 'y/|/ /' \
             -ne 's/^.*Usage:[ ]*[^ ]*[ ]*{*\([^}"]*\).*$/\1/p' \
             "${sysvdirs[0]}/$prev")"
     fi
diff --git a/completions-core/ip.bash b/completions-core/ip.bash
index 6dab132..4bd281f 100644
--- a/completions-core/ip.bash
+++ b/completions-core/ip.bash
@@ -22,7 +22,7 @@ _comp_cmd_ip__netns()
     _comp_split -l unquoted "$(
         {
             ${1-ip} -c=never netns list 2>/dev/null || ${1-ip} netns list
-        } | command sed -e 's/ (.*//'
+        } | command gsed -e 's/ (.*//'
     )"
     # namespace names can have spaces, so we quote all of them if needed
     local ns quoted=()
@@ -39,7 +39,7 @@ _comp_cmd_ip__link_types()
     _comp_compgen_split -- "$(
         {
             ${1-ip} -c=never link help || ${1-ip} link help
-        } 2>&1 | command sed -e \
+        } 2>&1 | command gsed -e \
             '/TYPE := /,/}/!d' -e \
             's/.*{//' -e \
             's/}.*//' -e \
@@ -52,7 +52,7 @@ _comp_cmd_ip__neigh_states()
     _comp_compgen_split -- "$(
         {
             ${1-ip} -c=never neigh help || ${1-ip} neigh help
-        } 2>&1 | command sed -e \
+        } 2>&1 | command gsed -e \
             '/STATE := /,/}/!d' -e \
             's/.*{//' -e \
             's/}.*//' -e \
@@ -103,7 +103,7 @@ _comp_cmd_ip()
                     ((cword == 1)) && printf '%s\n' -force
                     {
                         "$1" -c=never help || "$1" help
-                    } 2>&1 | command sed -e \
+                    } 2>&1 | command gsed -e \
                         's/[{|}=]/\n/g' -e \
                         's/\[\([^]]\{1,\}\)\]/\1/g'
                 )"
@@ -112,7 +112,7 @@ _comp_cmd_ip()
                 _comp_compgen_split -- "help $(
                     {
                         "$1" -c=never help || "$1" help
-                    } 2>&1 | command sed -e \
+                    } 2>&1 | command gsed -e \
                         '/OBJECT := /,/}/!d' -e \
                         's/.*{//' -e \
                         's/}.*//' -e \
@@ -315,7 +315,7 @@ _comp_cmd_ip()
                         _comp_compgen_split -- "$(
                             {
                                 "$1" -c=never r 2>/dev/null || "$1" r
-                            } | command sed -ne \
+                            } | command gsed -ne \
                                 's/.*via \([0-9.]*\).*/\1/p'
                         )"
                     elif [[ $prev == "$subcmd" ]]; then
@@ -386,7 +386,7 @@ _comp_cmd_ip()
                         _comp_compgen -- -W "$(
                             # stats command was added after color, should always have it
                             "$1" -c=never stats help 2>&1 |
-                                command sed -e \
+                                command gsed -e \
                                     '/^GROUP := /,/}/!d' -e \
                                     's/^GROUP := //g' -e \
                                     '/:=/d' -e \
@@ -475,7 +475,7 @@ _comp_cmd_ip()
                             _comp_compgen_split -- "$(
                                 {
                                     ip -c=never ntable show 2>/dev/null || ip ntable show
-                                } | command sed -ne 's/^inet6\{0,1\} //p'
+                                } | command gsed -ne 's/^inet6\{0,1\} //p'
                             )"
                             ;;
                         *)
@@ -544,7 +544,7 @@ _comp_cmd_ip()
                         _comp_compgen_split -- "help all $(
                             {
                                 "$1" -c=never monitor help || "$1" monitor help
-                            } 2>&1 | command sed -e \
+                            } 2>&1 | command gsed -e \
                                 '/OBJECTS := /,/[^|]$/!d' -e \
                                 's/OBJECTS := *//' -e \
                                 's/|//g'
diff --git a/completions-core/iperf.bash b/completions-core/iperf.bash
index 3bee88f..0f25e4c 100644
--- a/completions-core/iperf.bash
+++ b/completions-core/iperf.bash
@@ -20,8 +20,8 @@ _comp_cmd_iperf()
         --format | -${noargopts}f)
             local formats=$(
                 "$1" --help 2>&1 |
-                    command sed -ne 's/^.*--format .*\[\([a-zA-Z]\{1,\}\)\].*/\1/p' |
-                    command sed -e 's/./& /g'
+                    command gsed -ne 's/^.*--format .*\[\([a-zA-Z]\{1,\}\)\].*/\1/p' |
+                    command gsed -e 's/./& /g'
             )
             _comp_compgen -- -W '$formats'
             return
@@ -77,10 +77,10 @@ _comp_cmd_iperf()
     for i in "${words[@]}"; do
         case $i in
             -s | --server)
-                filter=(command sed -e '/^Client.specific/,/^\(Server.specific.*\)\{0,1\}$/d')
+                filter=(command gsed -e '/^Client.specific/,/^\(Server.specific.*\)\{0,1\}$/d')
                 ;;
             -c | --client)
-                filter=(command sed -e '/^Server.specific/,/^\(Client.specific.*\)\{0,1\}$/d')
+                filter=(command gsed -e '/^Server.specific/,/^\(Client.specific.*\)\{0,1\}$/d')
                 ;;
         esac
     done
diff --git a/completions-core/ipmitool.bash b/completions-core/ipmitool.bash
index 63bcecc..8527952 100644
--- a/completions-core/ipmitool.bash
+++ b/completions-core/ipmitool.bash
@@ -3,7 +3,7 @@
 _comp_cmd_ipmitool__singleline_help()
 {
     _comp_compgen_split -- "$("$1" "$2" 2>&1 |
-        command sed -ne $'s/[,\r]//g' -e 's/^.*[Cc]ommands://p')"
+        command gsed -ne $'s/[,\r]//g' -e 's/^.*[Cc]ommands://p')"
 }
 
 _comp_cmd_ipmitool()
@@ -23,7 +23,7 @@ _comp_cmd_ipmitool()
             ;;
         -*I)
             _comp_compgen_split -- "$("$1" -h 2>&1 |
-                command sed -e '/^Interfaces:/,/^[[:space:]]*$/!d' \
+                command gsed -e '/^Interfaces:/,/^[[:space:]]*$/!d' \
                     -ne 's/^[[:space:]]\{1,\}\([^[:space:]]\{1,\}\).*/\1/p')"
             return
             ;;
diff --git a/completions-core/iptables.bash b/completions-core/iptables.bash
index 2525460..bac9ad0 100644
--- a/completions-core/iptables.bash
+++ b/completions-core/iptables.bash
@@ -16,7 +16,7 @@ _comp_cmd_iptables()
         -*[AIDRPFXLZ])
             _comp_compgen_split -- "$(
                 "$1" ${table:+-t "$table"} -nL 2>/dev/null |
-                    command sed -ne 's/^Chain \([^ ]\{1,\}\).*$/\1/p'
+                    command gsed -ne 's/^Chain \([^ ]\{1,\}\).*$/\1/p'
             )"
             ;;
         -*t)
@@ -28,24 +28,24 @@ _comp_cmd_iptables()
                 _comp_compgen -a split \
                     -X '@(INPUT|OUTPUT|FORWARD|PREROUTING|POSTROUTING)' \
                     -- "$("$1" ${table:+-t "$table"} -nL 2>/dev/null |
-                        command sed -ne "$chain")"
+                        command gsed -ne "$chain")"
             elif [[ $table == "nat" ]]; then
                 _comp_compgen -- -W '$targets MIRROR SNAT DNAT MASQUERADE'
                 _comp_compgen -a split -X '@(OUTPUT|PREROUTING|POSTROUTING)' \
                     -- "$("$1" -t "$table" -nL 2>/dev/null |
-                        command sed -ne "$chain")"
+                        command gsed -ne "$chain")"
             elif [[ $table == "mangle" ]]; then
                 _comp_compgen -- -W '$targets MARK TOS'
                 _comp_compgen -a split \
                     -X '@(INPUT|OUTPUT|FORWARD|PREROUTING|POSTROUTING)' \
                     -- "$("$1" -t "$table" -nL 2>/dev/null |
-                        command sed -ne "$chain")"
+                        command gsed -ne "$chain")"
             fi
             ;;
         *)
             if [[ $cur == -* ]]; then
                 _comp_compgen_help - <<<"$("$1" --help 2>&1 |
-                    command sed -e "s/^\[\!\]//")"
+                    command gsed -e "s/^\[\!\]//")"
                 [[ ${COMPREPLY-} == *= ]] && compopt -o nospace
             fi
             ;;
diff --git a/completions-core/ipv6calc.bash b/completions-core/ipv6calc.bash
index 0dda1be..35ee93b 100644
--- a/completions-core/ipv6calc.bash
+++ b/completions-core/ipv6calc.bash
@@ -14,7 +14,7 @@ _comp_cmd_ipv6calc()
         --in | --out | --action | -${noargopts}[IOA])
             # With ipv6calc < 0.73.0, -m does nothing here, so use sed instead.
             _comp_compgen_split -- "$("$1" "$prev" -h 2>&1 |
-                command sed -ne 's/^[[:space:]]\{1,\}\([^[:space:]:]\{1,\}\)[[:space:]]*:.*/\1/p')"
+                command gsed -ne 's/^[[:space:]]\{1,\}\([^[:space:]:]\{1,\}\)[[:space:]]*:.*/\1/p')"
             return
             ;;
         --db-geoip | --db-ip2location-ipv4 | --db-ip2location-ipv6)
@@ -30,7 +30,7 @@ _comp_cmd_ipv6calc()
 
     if [[ $cur == -* ]]; then
         _comp_compgen_help - <<<"$("$1" -h 2>&1 |
-            command sed -e "s/[][]//g")"
+            command gsed -e "s/[][]//g")"
     fi
 
 } &&
diff --git a/completions-core/isql.bash b/completions-core/isql.bash
index c735c4e..4e12604 100644
--- a/completions-core/isql.bash
+++ b/completions-core/isql.bash
@@ -8,7 +8,7 @@ _comp_cmd_isql()
 
     [[ -f ${ODBCINI-} ]] &&
         _comp_compgen_split -l -- "$(
-            command sed -n 's/\]//g;s/^\[//gp' "$ODBCINI"
+            command gsed -n 's/\]//g;s/^\[//gp' "$ODBCINI"
         )"
 } &&
     complete -F _comp_cmd_isql isql
diff --git a/completions-core/java.bash b/completions-core/java.bash
index 6b18cf3..80b0b15 100644
--- a/completions-core/java.bash
+++ b/completions-core/java.bash
@@ -70,7 +70,7 @@ _comp_cmd_java__classes()
         if [[ $i == *.@(jar|zip) && -r $i ]]; then
             if type zipinfo &>/dev/null; then
                 _comp_split -a classes "$(zipinfo -1 "$i" "$cur*" 2>/dev/null |
-                    command grep '^[^$]*\.class$')"
+                    command ggrep '^[^$]*\.class$')"
             elif type unzip &>/dev/null; then
                 # Last column, between entries consisting entirely of dashes
                 _comp_split -a classes "$(unzip -lq "$i" "$cur*" 2>/dev/null |
@@ -78,7 +78,7 @@ _comp_cmd_java__classes()
                          flag && $NF ~ /^[^$]*\.class/ { print $NF }')"
             elif type jar &>/dev/null; then
                 _comp_split -a classes "$(jar tf "$i" "$cur" |
-                    command grep '^[^$]*\.class$')"
+                    command ggrep '^[^$]*\.class$')"
             fi
 
         elif [[ -d $i ]]; then
@@ -125,13 +125,13 @@ _comp_cmd_java__packages()
             _comp_expand_glob files '"$i/$cur_val"*' || continue
             _comp_split -la COMPREPLY "$(
                 command ls -F -d "${files[@]}" 2>/dev/null |
-                    command sed -e 's|^'"$i"'/||'
+                    command gsed -e 's|^'"$i"'/||'
             )"
         fi
     done
     if ((${#COMPREPLY[@]} != 0)); then
         # keep only packages with the package suffix `/` being removed
-        _comp_split -l COMPREPLY "$(printf '%s\n' "${COMPREPLY[@]}" | command sed -n 's,/$,,p')"
+        _comp_split -l COMPREPLY "$(printf '%s\n' "${COMPREPLY[@]}" | command gsed -n 's,/$,,p')"
         # convert path syntax to package syntax
         ((${#COMPREPLY[@]})) && COMPREPLY=("${COMPREPLY[@]//\//.}")
     fi
@@ -322,7 +322,7 @@ _comp_cmd_javac()
         # For some reason there may be -g:none AND -g:{lines,source,vars};
         # convert the none case to the curly brace format so it parses like
         # the others.
-        local opts=$("$1" $helpopt 2>&1 | command sed -e 's/-g:none/-g:{none}/' -ne \
+        local opts=$("$1" $helpopt 2>&1 | command gsed -e 's/-g:none/-g:{none}/' -ne \
             "s/^[[:space:]]*${cur%%:*}:{\([^}]\{1,\}\)}.*/\1/p")
         _comp_compgen -c "${cur#*:}" -- -W "${opts//,/ }"
         return
diff --git a/completions-core/lilo.bash b/completions-core/lilo.bash
index ee73a46..5fc5a7d 100644
--- a/completions-core/lilo.bash
+++ b/completions-core/lilo.bash
@@ -3,7 +3,7 @@
 _comp_cmd_lilo__labels()
 {
     _comp_compgen_split -- "$(_comp_awk -F = '$1 ~ /^[ \t]*label$/ {print $2}' \
-        "${1:-/etc/lilo.conf}" 2>/dev/null | command sed -e 's/"//g')"
+        "${1:-/etc/lilo.conf}" 2>/dev/null | command gsed -e 's/"//g')"
 }
 
 _comp_cmd_lilo()
diff --git a/completions-core/links.bash b/completions-core/links.bash
index ab10461..4c6ff8e 100644
--- a/completions-core/links.bash
+++ b/completions-core/links.bash
@@ -28,7 +28,7 @@ _comp_cmd_links()
             ;;
         -driver)
             local drivers=$("$1" -driver foo 2>&1 |
-                command sed -ne '$!d' -e '/^[a-z0-9, ]\{1,\}$/s/,/ /gp')
+                command gsed -ne '$!d' -e '/^[a-z0-9, ]\{1,\}$/s/,/ /gp')
             [[ $drivers ]] || drivers='x svgalib fb directfb pmshell atheos'
             _comp_compgen -- -W "$drivers"
             return
diff --git a/completions-core/lintian.bash b/completions-core/lintian.bash
index 98cf38c..74f9a12 100644
--- a/completions-core/lintian.bash
+++ b/completions-core/lintian.bash
@@ -25,7 +25,7 @@ _comp_cmd_lintian__checks()
         search=${cur//,/ }
         todisable=""
         for item in $search; do
-            match=$(command grep -nE "^(Check-Script|Abbrev): $item$" \
+            match=$(command ggrep -nE "^(Check-Script|Abbrev): $item$" \
                 "${check_files[@]}" | cut -d: -f1)
             todisable+=$'\n'$(_comp_awk '/^(Check-Script|Abbrev)/ { print $2 }' "$match")
         done
diff --git a/completions-core/lvm.bash b/completions-core/lvm.bash
index 47003b5..7e45297 100644
--- a/completions-core/lvm.bash
+++ b/completions-core/lvm.bash
@@ -8,25 +8,25 @@ _comp_cmd_lvm__filedir()
 _comp_cmd_lvm__volumegroups()
 {
     _comp_compgen_split -- "$(vgscan 2>/dev/null |
-        command sed -n -e 's|.*Found.*"\(.*\)".*$|\1|p')"
+        command gsed -n -e 's|.*Found.*"\(.*\)".*$|\1|p')"
 }
 
 _comp_cmd_lvm__physicalvolumes_all()
 {
     _comp_compgen_split -- "$(pvscan 2>/dev/null |
-        command sed -n -e 's|^.*PV \([^ ]*\) .*|\1|p')"
+        command gsed -n -e 's|^.*PV \([^ ]*\) .*|\1|p')"
 }
 
 _comp_cmd_lvm__physicalvolumes()
 {
     _comp_compgen_split -- "$(pvscan 2>/dev/null |
-        command sed -n -e 's|^.*PV \(.*\) VG.*$|\1|p')"
+        command gsed -n -e 's|^.*PV \(.*\) VG.*$|\1|p')"
 }
 
 _comp_cmd_lvm__logicalvolumes()
 {
     _comp_compgen_split -- "$(lvscan 2>/dev/null |
-        command sed -n -e "s|^.*'\(.*\)'.*$|\1|p")"
+        command gsed -n -e "s|^.*'\(.*\)'.*$|\1|p")"
     if [[ $cur == /dev/mapper/* ]]; then
         _comp_compgen -a filedir -X '*/control'
     fi
diff --git a/completions-core/makepkg.bash b/completions-core/makepkg.bash
index a3f2195..aafc296 100644
--- a/completions-core/makepkg.bash
+++ b/completions-core/makepkg.bash
@@ -14,7 +14,7 @@ _comp_cmd_makepkg__slackware()
     esac
 
     if [[ $cur == -* ]]; then
-        _comp_compgen_help - <<<"$("$1" | command sed -e "s/^options://")"
+        _comp_compgen_help - <<<"$("$1" | command gsed -e "s/^options://")"
         return
     fi
 
diff --git a/completions-core/medusa.bash b/completions-core/medusa.bash
index 9a093f6..5dbd8d0 100644
--- a/completions-core/medusa.bash
+++ b/completions-core/medusa.bash
@@ -16,7 +16,7 @@ _comp_cmd_medusa()
             ;;
         -*M)
             _comp_compgen_split -- "$("$1" -d | _comp_awk '/^ +\+/ {print $2}' |
-                command sed -e 's/\.mod$//')"
+                command gsed -e 's/\.mod$//')"
             return
             ;;
     esac
diff --git a/completions-core/mplayer.bash b/completions-core/mplayer.bash
index c600d13..583abff 100644
--- a/completions-core/mplayer.bash
+++ b/completions-core/mplayer.bash
@@ -4,8 +4,8 @@ _comp_cmd_mplayer__options()
 {
     cur=${cur%\\}
     _comp_compgen_split -- "$("$1" -noconfig all "$2" help 2>/dev/null |
-        command sed -e '/^Available/,/^$/!d' -e '/^Available/d' | _comp_awk '{print $1}' |
-        command sed -e 's/:$//' -e 's/^'"${2#-}"'$//' -e 's/<.*//')"
+        command gsed -e '/^Available/,/^$/!d' -e '/^Available/d' | _comp_awk '{print $1}' |
+        command gsed -e 's/:$//' -e 's/^'"${2#-}"'$//' -e 's/<.*//')"
 }
 
 _comp_cmd_mplayer()
@@ -54,7 +54,7 @@ _comp_cmd_mplayer()
             ;;
         -subcp | -msgcharset)
             local cp
-            if _comp_split cp "$(iconv --list 2>/dev/null | command sed -e "s@//@@" 2>/dev/null)"; then
+            if _comp_split cp "$(iconv --list 2>/dev/null | command gsed -e "s@//@@" 2>/dev/null)"; then
                 if [[ $cur == "${cur,,}" ]]; then
                     _comp_compgen -- -W '"${cp[@],,}"'
                 else
@@ -267,7 +267,7 @@ _comp_cmd_mplayer()
     case $cur in
         -*)
             _comp_compgen_split -- "$("$cmd" -noconfig all -list-options 2>/dev/null |
-                command sed -e '1,/^[[:space:]]*Name/d' \
+                command gsed -e '1,/^[[:space:]]*Name/d' \
                     -e 's/^[[:space:]]*/-/' -e 's/[[:space:]:].*//' \
                     -e '/^-\(.*\*\)\{0,1\}$/d;/^-Total$/d')"
             ;;
diff --git a/completions-core/msynctool.bash b/completions-core/msynctool.bash
index 5b2ecca..7fb9999 100644
--- a/completions-core/msynctool.bash
+++ b/completions-core/msynctool.bash
@@ -8,7 +8,7 @@ _comp_cmd_msynctool()
     case $words in
         --configure)
             _comp_compgen_split -- "$("$1" --showgroup "$prev" |
-                _comp_awk '/^Member/ {print $2}' | command sed -e 's/:$//')"
+                _comp_awk '/^Member/ {print $2}' | command gsed -e 's/:$//')"
             return
             ;;
         --addmember)
diff --git a/completions-core/mutt.bash b/completions-core/mutt.bash
index aa9b1e2..cbe0c7f 100644
--- a/completions-core/mutt.bash
+++ b/completions-core/mutt.bash
@@ -67,7 +67,7 @@ _comp_cmd_mutt__get_conffiles__visit()
     conffiles+=("$1")
 
     local -a newconffiles
-    _comp_split newconffiles "$(command sed -n 's|^source[[:space:]]\{1,\}\([^[:space:]]\{1,\}\).*$|\1|p' "$1")" ||
+    _comp_split newconffiles "$(command gsed -n 's|^source[[:space:]]\{1,\}\([^[:space:]]\{1,\}\).*$|\1|p' "$1")" ||
         return 0
 
     local file REPLY
@@ -90,7 +90,7 @@ _comp_cmd_mutt__aliases()
     local REPLY
     _comp_cmd_mutt__get_conffiles "$muttrc" || return 0
     conffiles=("${REPLY[@]}")
-    _comp_compgen -a split -- "$(command sed -n 's|^alias[[:space:]]\{1,\}\([^[:space:]]\{1,\}\).*$|\1|p' \
+    _comp_compgen -a split -- "$(command gsed -n 's|^alias[[:space:]]\{1,\}\([^[:space:]]\{1,\}\).*$|\1|p' \
         "${conffiles[@]}")"
 }
 
@@ -101,7 +101,7 @@ _comp_cmd_mutt__query()
     [[ $cur ]] || return 0
     local muttcmd=${words[0]}
 
-    local querycmd=$("$muttcmd" -Q query_command 2>/dev/null | command sed -e 's|^query_command="\(.*\)"$|\1|' -e 's|%s|'"$cur"'|')
+    local querycmd=$("$muttcmd" -Q query_command 2>/dev/null | command gsed -e 's|^query_command="\(.*\)"$|\1|' -e 's|%s|'"$cur"'|')
     if [[ $querycmd ]]; then
         local REPLY
         _comp_expand_tilde "$querycmd"
@@ -109,7 +109,7 @@ _comp_cmd_mutt__query()
         # generate queryresults:
         # $querycmd is expected to be a command with arguments
         _comp_compgen -a split -- "$($querycmd |
-            command sed -n '2,$s|^\([^[:space:]]\{1,\}\).*|\1|p')"
+            command gsed -n '2,$s|^\([^[:space:]]\{1,\}\).*|\1|p')"
     fi
 }
 
@@ -120,7 +120,7 @@ _comp_cmd_mutt__filedir()
     _comp_cmd_mutt__get_muttrc
     muttrc=$REPLY
     if [[ $cur == [=+]* ]]; then
-        folder=$("$muttcmd" -F "$muttrc" -Q folder 2>/dev/null | command sed -e 's|^folder="\(.*\)"$|\1|')
+        folder=$("$muttcmd" -F "$muttrc" -Q folder 2>/dev/null | command gsed -e 's|^folder="\(.*\)"$|\1|')
         [[ $folder ]] || folder=~/Mail
 
         # Match any file in $folder beginning with $cur
@@ -131,7 +131,7 @@ _comp_cmd_mutt__filedir()
         return
     elif [[ $cur == !* ]]; then
         spoolfile=$("$muttcmd" -F "$muttrc" -Q spoolfile 2>/dev/null |
-            command sed -e 's|^spoolfile="\(.*\)"$|\1|')
+            command gsed -e 's|^spoolfile="\(.*\)"$|\1|')
         if [[ $spoolfile ]]; then
             _comp_dequote "\"$spoolfile\"" && spoolfile=$REPLY
             cur=$spoolfile${cur:1}
diff --git a/completions-core/mysql.bash b/completions-core/mysql.bash
index c88e7ac..7949a3d 100644
--- a/completions-core/mysql.bash
+++ b/completions-core/mysql.bash
@@ -35,7 +35,7 @@ _comp_cmd_mysql()
             ;;
         --database | -${noargopts}D)
             _comp_compgen_split -- "$(mysqlshow 2>/dev/null |
-                command sed -ne '2d' -e 's/^|.\([^|]*\)|.*/\1/p')"
+                command gsed -ne '2d' -e 's/^|.\([^|]*\)|.*/\1/p')"
             return
             ;;
 
@@ -102,6 +102,6 @@ _comp_cmd_mysql()
     esac
 
     _comp_compgen_split -- "$(mysqlshow 2>/dev/null |
-        command sed -ne '2d' -e 's/^|.\([^|]*\)|.*/\1/p')"
+        command gsed -ne '2d' -e 's/^|.\([^|]*\)|.*/\1/p')"
 } &&
     complete -F _comp_cmd_mysql mysql
diff --git a/completions-core/ncftp.bash b/completions-core/ncftp.bash
index e78698f..68460cd 100644
--- a/completions-core/ncftp.bash
+++ b/completions-core/ncftp.bash
@@ -17,7 +17,7 @@ _comp_cmd_ncftp()
     fi
 
     if [[ $cword -eq 1 && -f ~/.ncftp/bookmarks ]]; then
-        _comp_compgen_split -- "$(command sed -ne \
+        _comp_compgen_split -- "$(command gsed -ne \
             's/^\([^,]\{1,\}\),.*$/\1/p' ~/.ncftp/bookmarks)"
     fi
 
diff --git a/completions-core/nmap.bash b/completions-core/nmap.bash
index 4f76be0..6ecc340 100644
--- a/completions-core/nmap.bash
+++ b/completions-core/nmap.bash
@@ -36,7 +36,7 @@ _comp_cmd_nmap()
         # strip everything following a non-option name or = char
         # TODO: should expand -T<0-5> to -T0 ... -T5
         _comp_compgen_split -- "$(
-            "$1" --help 2>&1 | command sed \
+            "$1" --help 2>&1 | command gsed \
                 -e "s/:.*$//" \
                 -e "s/=.*$/=/" \
                 -e "s/;[[:space:]]*-/ -/g" \
diff --git a/completions-core/openssl.bash b/completions-core/openssl.bash
index 61e6ef4..d379087 100644
--- a/completions-core/openssl.bash
+++ b/completions-core/openssl.bash
@@ -33,8 +33,8 @@ _comp_cmd_openssl__compgen_digests()
             _comp_awk '/^-.*[ \t]to use the .* message digest algorithm/ { print $1 }'
     )"
     _comp_compgen_split -- "$("$1" help 2>&1 |
-        command sed -ne '/^Message Digest commands/,/^[[:space:]]*$/p' |
-        command sed -e '1d;s/^/-/')"
+        command gsed -ne '/^Message Digest commands/,/^[[:space:]]*$/p' |
+        command gsed -e '1d;s/^/-/')"
 }
 
 _comp_cmd_openssl()
@@ -47,7 +47,7 @@ _comp_cmd_openssl()
     if ((cword == 1)); then
         local commands
         # We only want the standard commands, so we delete everything starting after and including "Message Digest commands"
-        commands=$("$1" help 2>&1 | command sed -e '/Standard commands/d;/help:/d' -e '/Message Digest commands/,$d')
+        commands=$("$1" help 2>&1 | command gsed -e '/Standard commands/d;/help:/d' -e '/Message Digest commands/,$d')
         _comp_compgen -- -W "$commands"
     else
         command=${words[1]}
@@ -114,7 +114,7 @@ _comp_cmd_openssl()
                 enc)
                     # The -list option was added in openssl 1.1.1e, so we ignore the error here.
                     # We do get some of the ciphers "by accident", since some are detected in the help output.
-                    _comp_compgen -a split -- "$("$1" enc -list 2>/dev/null | command sed '/Supported ciphers:/d')"
+                    _comp_compgen -a split -- "$("$1" enc -list 2>/dev/null | command gsed '/Supported ciphers:/d')"
                     ;;
             esac
         else
diff --git a/completions-core/perl.bash b/completions-core/perl.bash
index c2ab69a..a118d43 100644
--- a/completions-core/perl.bash
+++ b/completions-core/perl.bash
@@ -131,7 +131,7 @@ _comp_cmd_perldoc()
             _comp_cmd_perl__helper "" perldocs
             if [[ $cur == p* ]]; then
                 _comp_compgen -a split -- "$(PERLDOC_PAGER=cat "$1" -u perl |
-                    command sed -ne '/perl.*Perl overview/,/perlwin32/p' |
+                    command gsed -ne '/perl.*Perl overview/,/perlwin32/p' |
                     _comp_awk 'NF >= 2 && $1 ~ /^perl/ { print $1 }')"
             fi
         fi
diff --git a/completions-core/pgrep.bash b/completions-core/pgrep.bash
index 3be251f..5cd7325 100644
--- a/completions-core/pgrep.bash
+++ b/completions-core/pgrep.bash
@@ -38,7 +38,7 @@ _comp_cmd_pgrep()
         --nslist)
             _comp_compgen -c "${cur##*,}" split -F $' \t\n,' -- "$(
                 "$1" --help 2>&1 |
-                    command sed -ne 's/^[[:space:]]*Available namespaces://p'
+                    command gsed -ne 's/^[[:space:]]*Available namespaces://p'
             )" &&
                 _comp_delimited , -W '"${COMPREPLY[@]}"'
             return
@@ -48,7 +48,7 @@ _comp_cmd_pgrep()
     if [[ $cur == -* ]]; then
         _comp_compgen_help ||
             _comp_compgen_usage - <<<"$("$1" --usage 2>&1 |
-                command sed -e "s/\[-signal\]//" -e "s/\[-SIGNAL\]//")"
+                command gsed -e "s/\[-signal\]//" -e "s/\[-SIGNAL\]//")"
         [[ $cword -eq 1 && $1 == *pkill ]] && _comp_compgen -a signals -
         return
     fi
diff --git a/completions-core/pkgadd.bash b/completions-core/pkgadd.bash
index 4101599..3dd4133 100644
--- a/completions-core/pkgadd.bash
+++ b/completions-core/pkgadd.bash
@@ -48,7 +48,7 @@ _comp_cmd_pkgadd()
                     local REPLY
                     _comp_dequote "$device"
                     _comp_split -l pkginst_list "$(strings "${REPLY-}" |
-                        command sed -n 's/^PKG=//p' | sort -u)"
+                        command gsed -n 's/^PKG=//p' | sort -u)"
                 fi
                 ((${#pkginst_list[@]})) &&
                     _comp_compgen -- -W '"${pkginst_list[@]}"'
diff --git a/completions-core/pngfix.bash b/completions-core/pngfix.bash
index d2e0dd2..ac0c95e 100644
--- a/completions-core/pngfix.bash
+++ b/completions-core/pngfix.bash
@@ -15,7 +15,7 @@ _comp_cmd_pngfix()
             ;;
         --strip)
             _comp_compgen_split -F '|' -- "$("$1" --help 2>&1 |
-                command sed -ne 's/.*--strip=\[\([^]]*\)\].*/\1/p')"
+                command gsed -ne 's/.*--strip=\[\([^]]*\)\].*/\1/p')"
             return
             ;;
     esac
diff --git a/completions-core/postcat.bash b/completions-core/postcat.bash
index 73d4f53..83537b5 100644
--- a/completions-core/postcat.bash
+++ b/completions-core/postcat.bash
@@ -23,7 +23,7 @@ _comp_cmd_postcat()
     done
     if [[ $qfile ]]; then
         _comp_compgen_split -- "$(mailq 2>/dev/null |
-            command sed -e '1d; $d; /^[^0-9A-Z]/d; /^$/d; s/[* !].*$//')"
+            command gsed -e '1d; $d; /^[^0-9A-Z]/d; /^$/d; s/[* !].*$//')"
         return
     fi
 
diff --git a/completions-core/postsuper.bash b/completions-core/postsuper.bash
index 6a0832a..6e7c38d 100644
--- a/completions-core/postsuper.bash
+++ b/completions-core/postsuper.bash
@@ -12,17 +12,17 @@ _comp_cmd_postsuper()
             ;;
         -[dr])
             _comp_compgen_split -- "ALL $(mailq 2>/dev/null |
-                command sed -e '1d; $d; /^[^0-9A-Z]/d; /^$/d; s/[* !].*$//')"
+                command gsed -e '1d; $d; /^[^0-9A-Z]/d; /^$/d; s/[* !].*$//')"
             return
             ;;
         -h)
             _comp_compgen_split -- "ALL $(mailq 2>/dev/null |
-                command sed \
+                command gsed \
                     -e '1d; $d; /^[^0-9A-Z]/d; /^$/d; s/[* ].*$//; /!$/d')"
             return
             ;;
         -H)
-            _comp_compgen_split -- "ALL $(mailq 2>/dev/null | command sed \
+            _comp_compgen_split -- "ALL $(mailq 2>/dev/null | command gsed \
                 -e '1d; $d; /^[^0-9A-Z]/d; /^$/d; /^[0-9A-Z]*[* ]/d; s/!.*$//')"
             return
             ;;
diff --git a/completions-core/povray.bash b/completions-core/povray.bash
index f6515f3..074384c 100644
--- a/completions-core/povray.bash
+++ b/completions-core/povray.bash
@@ -44,7 +44,7 @@ _comp_cmd_povray()
             [[ $cur =~ ^(.*\.ini)\[ ]] || return
             local ini=${BASH_REMATCH[1]}
             [[ -f $ini && -r $ini ]] || return
-            _comp_compgen -P "${ini}[" split -l -- "$(command sed -ne \
+            _comp_compgen -P "${ini}[" split -l -- "$(command gsed -ne \
                 's/^[[:space:]]*\[\([^]]*\]\).*$/\1/p' -- "$ini")"
             # to prevent [bar] expand to nothing.  can be done more easily?
             return
diff --git a/completions-core/ps.bash b/completions-core/ps.bash
index 35e2931..1bccb58 100644
--- a/completions-core/ps.bash
+++ b/completions-core/ps.bash
@@ -61,7 +61,7 @@ _comp_cmd_ps()
             "$1" --help
             "$1" --help all
         } 2>/dev/null |
-            command sed -e "s/, [A-Za-z],/,/")" ||
+            command gsed -e "s/, [A-Za-z],/,/")" ||
             _comp_compgen_usage
     fi
 } &&
diff --git a/completions-core/puppet.bash b/completions-core/puppet.bash
index bddb971..9765c50 100644
--- a/completions-core/puppet.bash
+++ b/completions-core/puppet.bash
@@ -24,7 +24,7 @@ _comp_cmd_puppet__certs()
     if [[ $1 == --all ]]; then
         cert_list=$(
             $puppetca --list --all |
-                command sed -e 's/^[+-]\{0,1\}[[:space:]]*\([^[:space:]]\{1,\}\)[[:space:]]\{1,\}.*$/\1/'
+                command gsed -e 's/^[+-]\{0,1\}[[:space:]]*\([^[:space:]]\{1,\}\)[[:space:]]\{1,\}.*$/\1/'
         )
     else
         cert_list=$("$puppetca" --list)
@@ -35,7 +35,7 @@ _comp_cmd_puppet__certs()
 _comp_cmd_puppet__types()
 {
     puppet_types=$(
-        puppet describe --list | command sed -e 's/^\([^[:space:]]\{1,\}\).*$/\1/'
+        puppet describe --list | command gsed -e 's/^\([^[:space:]]\{1,\}\).*$/\1/'
     )
     _comp_compgen -a -- -W "$puppet_types"
 }
@@ -47,7 +47,7 @@ _comp_cmd_puppet__references()
         puppetdoc=puppetdoc
 
     puppet_doc_list=$(
-        $puppetdoc --list | command sed -e 's/^\([^[:space:]]\{1,\}\).*$/\1/'
+        $puppetdoc --list | command gsed -e 's/^\([^[:space:]]\{1,\}\).*$/\1/'
     )
     _comp_compgen -a -- -W "$puppet_doc_list"
 }
diff --git a/completions-core/pydoc.bash b/completions-core/pydoc.bash
index aafb01b..b697f3a 100644
--- a/completions-core/pydoc.bash
+++ b/completions-core/pydoc.bash
@@ -16,7 +16,7 @@ _comp_cmd_pydoc()
     esac
 
     if [[ $cur == -* ]]; then
-        _comp_compgen_help - <<<"$("$1" | command sed -e "s/^pydoc3\{0,1\} //")"
+        _comp_compgen_help - <<<"$("$1" | command gsed -e "s/^pydoc3\{0,1\} //")"
         return
     fi
 
@@ -32,7 +32,7 @@ _comp_cmd_pydoc()
     # Note that we don't do "pydoc modules" as it is known to hang on
     # some systems; _comp_xfunc_python_modules tends to work better and faster.
     _comp_compgen -a split -- "$("$1" keywords topics |
-        command sed -e '/^Here/d')"
+        command gsed -e '/^Here/d')"
 
     _comp_compgen -a filedir py
 } &&
diff --git a/completions-core/pylint.bash b/completions-core/pylint.bash
index 665e8d3..98ab368 100644
--- a/completions-core/pylint.bash
+++ b/completions-core/pylint.bash
@@ -11,10 +11,10 @@ _comp_cmd_pylint__message_ids()
     local msgs=$(
         set -o pipefail
         "$1" --list-msgs-enabled 2>/dev/null |
-            command sed -ne "$filter" |
-            command sed -ne 's/^[[:space:]]\{1,\}\([a-z-]\{6,\}\).*/\1/p' ||
+            command gsed -ne "$filter" |
+            command gsed -ne 's/^[[:space:]]\{1,\}\([a-z-]\{6,\}\).*/\1/p' ||
             "$1" --list-msgs 2>/dev/null |
-            command sed -ne 's/^:\([a-z-]\{6,\}\).*/\1/p'
+            command gsed -ne 's/^:\([a-z-]\{6,\}\).*/\1/p'
     )
     _comp_delimited , -W "$msgs"
 }
diff --git a/completions-core/pytest.bash b/completions-core/pytest.bash
index 9f44254..4f11eba 100644
--- a/completions-core/pytest.bash
+++ b/completions-core/pytest.bash
@@ -3,7 +3,7 @@
 _comp_cmd_pytest__option_choice_args()
 {
     local modes=$("$1" "$2=bash-completion-nonexistent" 2>&1 |
-        command sed -e 's/[^[:space:][:alnum:]_-]\{1,\}//g' \
+        command gsed -e 's/[^[:space:][:alnum:]_-]\{1,\}//g' \
             -e 's/.*choose from //p' -e 's/.*Valid modes //p' -e d)
     _comp_compgen -a -- -W '$modes'
 }
diff --git a/completions-core/qdbus.bash b/completions-core/qdbus.bash
index 14eb735..f34528c 100644
--- a/completions-core/qdbus.bash
+++ b/completions-core/qdbus.bash
@@ -6,7 +6,7 @@ _comp_cmd_qdbus()
     _comp_initialize -- "$@" || return
 
     _comp_compgen_split -- "$(
-        command "${words[@]::cword}" 2>/dev/null | command sed 's/(.*)//'
+        command "${words[@]::cword}" 2>/dev/null | command gsed 's/(.*)//'
     )"
 } &&
     complete -F _comp_cmd_qdbus qdbus dcop
diff --git a/completions-core/reportbug.bash b/completions-core/reportbug.bash
index 61573a1..b82dde3 100644
--- a/completions-core/reportbug.bash
+++ b/completions-core/reportbug.bash
@@ -33,7 +33,7 @@ _comp_cmd_reportbug()
             ;;
         --tag | --ui | --interface | --type | --bts | --severity | --mode | -${noargopts}[TutBS])
             _comp_compgen_split -- "$("$1" "$prev" help 2>&1 |
-                command sed -ne '/^[[:space:]]/p')"
+                command gsed -ne '/^[[:space:]]/p')"
             return
             ;;
         --editor | --mua | --mbox-reader-cmd | -${noargopts}e)
diff --git a/completions-core/rpcdebug.bash b/completions-core/rpcdebug.bash
index 9e6c59f..f181a4c 100644
--- a/completions-core/rpcdebug.bash
+++ b/completions-core/rpcdebug.bash
@@ -13,7 +13,7 @@ _comp_cmd_rpcdebug__flags()
 
     if [[ $module ]]; then
         _comp_compgen_split -- "$(rpcdebug -vh 2>&1 |
-            command sed -ne 's/^'"$module"'[[:space:]]\{1,\}//p')"
+            command gsed -ne 's/^'"$module"'[[:space:]]\{1,\}//p')"
     fi
 }
 
diff --git a/completions-core/rpm.bash b/completions-core/rpm.bash
index 3bb7403..0986d92 100644
--- a/completions-core/rpm.bash
+++ b/completions-core/rpm.bash
@@ -13,7 +13,7 @@ _comp_cmd_rpm__compgen_installed_packages()
     if [[ -r /var/log/rpmpkgs &&
         /var/log/rpmpkgs -nt /var/lib/rpm/Packages ]]; then
         # using RHL 7.2 or later - this is quicker than querying the DB
-        _comp_compgen_split -- "$(command sed -ne \
+        _comp_compgen_split -- "$(command gsed -ne \
             's|^\([^[:space:]]\{1,\}\)-[^[:space:]-]\{1,\}-[^[:space:]-]\{1,\}\.rpm$|\1|p' \
             /var/log/rpmpkgs)"
     elif type rpmqpack &>/dev/null; then
@@ -37,7 +37,7 @@ _comp_cmd_rpm__groups()
 _comp_cmd_rpm__macros()
 {
     # get a list of macros
-    _comp_compgen_split -- "$("${1:-rpm}" --showrc | command sed -ne \
+    _comp_compgen_split -- "$("${1:-rpm}" --showrc | command gsed -ne \
         's/^-\{0,1\}[0-9]\{1,\}[:=][[:space:]]\{1,\}\([^[:space:](]\{3,\}\).*/%\1/p')"
 }
 
@@ -46,7 +46,7 @@ _comp_cmd_rpm__buildarchs()
 {
     # Case-insensitive BRE to match "compatible build archs"
     local regex_header='[cC][oO][mM][pP][aA][tT][iI][bB][lL][eE][[:space:]]\{1,\}[bB][uU][iI][lL][dD][[:space:]]\{1,\}[aA][rR][cC][hH][sS]'
-    _comp_compgen_split -- "$("${1:-rpm}" --showrc | command sed -ne \
+    _comp_compgen_split -- "$("${1:-rpm}" --showrc | command gsed -ne \
         "s/^[[:space:]]*${regex_header}[[:space:]]*:[[:space:]]*\(.*\)/\1/p")"
 }
 
@@ -120,7 +120,7 @@ _comp_cmd_rpm()
                 esac
                 _comp_compgen_split -l -- "$("$1" -qa --nodigest \
                     --nosignature --queryformat="\"$fmt\\n\"" 2>/dev/null |
-                    command grep -vF '(none)')"
+                    command ggrep -vF '(none)')"
             fi
             return
             ;;
@@ -281,7 +281,7 @@ _comp_cmd_rpmbuild()
             _comp_cmd_rpm__configdir
             if [[ $cfgdir ]]; then
                 _comp_compgen_split -- "$(command ls "$cfgdir" 2>/dev/null |
-                    command sed -ne 's/^brp-//p')"
+                    command gsed -ne 's/^brp-//p')"
             fi
             ;;
         --define | --with | --without | -${noargopts}D)
diff --git a/completions-core/rsync.bash b/completions-core/rsync.bash
index 8042a3c..ed99b0e 100644
--- a/completions-core/rsync.bash
+++ b/completions-core/rsync.bash
@@ -85,7 +85,7 @@ _comp_cmd_rsync()
             # meaning before v3.2.0) contain the following unusual line in
             # --help:
             # "(-h) --help                  show this help (-h is --help only if used alone)"
-            if _comp_compgen -Rv tmp help - <<<"$("$1" --help 2>&1 | command sed -e 's/^([^)]*)//')"; then
+            if _comp_compgen -Rv tmp help - <<<"$("$1" --help 2>&1 | command gsed -e 's/^([^)]*)//')"; then
 
                 _comp_compgen -- -W '"${tmp[@]}"
                     --daemon --old-d{,irs}
@@ -107,7 +107,7 @@ _comp_cmd_rsync()
             done
             if [[ $shell == ssh ]]; then
                 local rsync_version=$("$1" --version 2>/dev/null |
-                    command sed -n '1s/.*rsync *version \([0-9.]*\).*/\1/p')
+                    command gsed -n '1s/.*rsync *version \([0-9.]*\).*/\1/p')
                 _comp_cmd_rsync__vercomp "$rsync_version" "3.2.4"
                 if (($? == 2)); then
                     _comp_compgen -x scp remote_files
diff --git a/completions-core/sbopkg.bash b/completions-core/sbopkg.bash
index 4fbce28..6413d9c 100644
--- a/completions-core/sbopkg.bash
+++ b/completions-core/sbopkg.bash
@@ -61,7 +61,7 @@ _comp_cmd_sbopkg()
     local file=${REPO_ROOT-}/${REPO_NAME-}/${REPO_BRANCH-}/SLACKBUILDS.TXT
     [[ -f $file && -r $file ]] || return
 
-    _comp_compgen_split -l -- "$(command sed -ne "s/^SLACKBUILD NAME: //p" \
+    _comp_compgen_split -l -- "$(command gsed -ne "s/^SLACKBUILD NAME: //p" \
         "$file")"
     if [[ -d ${QUEUEDIR-} ]]; then
         _comp_compgen -aC "$QUEUEDIR" filedir sqf
diff --git a/completions-core/screen.bash b/completions-core/screen.bash
index 644073d..6e4ea6f 100644
--- a/completions-core/screen.bash
+++ b/completions-core/screen.bash
@@ -3,7 +3,7 @@
 _comp_cmd_screen__sessions()
 {
     local -a sessions
-    _comp_split sessions "$(command screen -ls | command sed -ne \
+    _comp_split sessions "$(command screen -ls | command gsed -ne \
         's|^'$'\t''\{1,\}\([0-9]\{1,\}\.[^'$'\t'']\{1,\}\).*'"$1"'.*$|\1|p')" || return
     if [[ $cur == +([0-9])?(.*) ]]; then
         # Complete sessions including pid prefixes
diff --git a/completions-core/shellcheck.bash b/completions-core/shellcheck.bash
index fdca1c9..cf1f8aa 100644
--- a/completions-core/shellcheck.bash
+++ b/completions-core/shellcheck.bash
@@ -3,7 +3,7 @@
 _comp_cmd_shellcheck__optarg()
 {
     local args=$("$1" --help 2>&1 |
-        command sed -e 's/,/ /g' -ne 's/^.*'"$2"'\([^[:alnum:]].*\)\{0,1\}(\([^)]*\)).*/\2/p')
+        command gsed -e 's/,/ /g' -ne 's/^.*'"$2"'\([^[:alnum:]].*\)\{0,1\}(\([^)]*\)).*/\2/p')
     _comp_compgen -a -- -W '$args'
 }
 
@@ -23,8 +23,8 @@ _comp_cmd_shellcheck()
             ;;
         --format | -${noargopts}f)
             local args=$("$1" --format=nonexistent-format /dev/null 2>&1 |
-                command sed -ne '/^Supported formats/,//p' |
-                command sed -ne '/^[[:space:]]/p')
+                command gsed -ne '/^Supported formats/,//p' |
+                command gsed -ne '/^[[:space:]]/p')
             _comp_compgen -- -W '$args'
             return
             ;;
diff --git a/completions-core/sitecopy.bash b/completions-core/sitecopy.bash
index 7dd3fd4..e736326 100644
--- a/completions-core/sitecopy.bash
+++ b/completions-core/sitecopy.bash
@@ -43,7 +43,7 @@ _comp_cmd_sitecopy()
     esac
 
     if [[ -r ~/.sitecopyrc ]]; then
-        _comp_compgen_split -- "$("$1" -v | command sed -n 's/^Site: //p')"
+        _comp_compgen_split -- "$("$1" -v | command gsed -n 's/^Site: //p')"
     fi
 } &&
     complete -F _comp_cmd_sitecopy -o default sitecopy
diff --git a/completions-core/slabtop.bash b/completions-core/slabtop.bash
index 6c65c73..b082634 100644
--- a/completions-core/slabtop.bash
+++ b/completions-core/slabtop.bash
@@ -13,7 +13,7 @@ _comp_cmd_slabtop()
             ;;
         --sort | -${noargopts}s)
             _comp_compgen_split -- "$(
-                "$1" --help | command sed \
+                "$1" --help | command gsed \
                     -e '/^The following are valid sort criteria/,/^$/!d' \
                     -ne 's/^[[:space:]]\(.\):.*/\1/p'
             )"
diff --git a/completions-core/slapt-get.bash b/completions-core/slapt-get.bash
index 4f955a2..09d3cef 100644
--- a/completions-core/slapt-get.bash
+++ b/completions-core/slapt-get.bash
@@ -62,14 +62,14 @@ _comp_cmd_slapt_get()
             local name=${cur%%-*}
             _comp_compgen_split -l -- "$(
                 LC_ALL=C "$1" -c "$config" --search "^$name" 2>/dev/null |
-                    LC_ALL=C command sed -ne "/^$cur/{s/ .*$//;p;}"
+                    LC_ALL=C command gsed -ne "/^$cur/{s/ .*$//;p;}"
             )"
             return
             ;;
         avl) # --install|-i|
             _comp_compgen_split -l -- "$(
                 LC_ALL=C "$1" -c "$config" --available 2>/dev/null |
-                    LC_ALL=C command sed -ne "/^$cur/{s/ .*$//;p;}"
+                    LC_ALL=C command gsed -ne "/^$cur/{s/ .*$//;p;}"
             )"
             return
             ;;
diff --git a/completions-core/slapt-src.bash b/completions-core/slapt-src.bash
index b3d7cf4..a939e04 100644
--- a/completions-core/slapt-src.bash
+++ b/completions-core/slapt-src.bash
@@ -59,13 +59,13 @@ _comp_cmd_slapt_src()
         _comp_compgen_split -l -- "$(
             LC_ALL=C
             "$1" --config "$config" --search "^$name" 2>/dev/null |
-                command sed -ne "/^$cur/{s/^$name:\([^ ]*\) .*$/\1/;p;}"
+                command gsed -ne "/^$cur/{s/^$name:\([^ ]*\) .*$/\1/;p;}"
         )"
     else
         _comp_compgen_split -l -- "$(
             LC_ALL=C
             "$1" --config "$config" --search "^$cur" 2>/dev/null |
-                command sed -ne "/^$cur/{s/ .*$//;p;}"
+                command gsed -ne "/^$cur/{s/ .*$//;p;}"
         )"
     fi
 } &&
diff --git a/completions-core/smbclient.bash b/completions-core/smbclient.bash
index 53dfb68..df59f44 100644
--- a/completions-core/smbclient.bash
+++ b/completions-core/smbclient.bash
@@ -16,7 +16,7 @@ _comp_cmd_smbclient__hosts()
 {
     if [[ ${BASH_COMPLETION_CMD_SMBTREE_SCAN-${COMP_SAMBA_SCAN-}} ]]; then
         _comp_compgen_split -- "$(smbtree -N -S |
-            command sed -ne 's/^[[:space:]]*\\\\*\([^[:space:]]*\).*/\1/p')"
+            command gsed -ne 's/^[[:space:]]*\\\\*\([^[:space:]]*\).*/\1/p')"
     fi
 }
 
diff --git a/completions-core/ss.bash b/completions-core/ss.bash
index 20aae75..414c07a 100644
--- a/completions-core/ss.bash
+++ b/completions-core/ss.bash
@@ -17,7 +17,7 @@ _comp_cmd_ss()
             ;;
         --query | -${noargopts}A)
             local queries=$("$1" --help |
-                command sed -e 's/|/ /g' -ne 's/.*QUERY := {\([^}]*\)}.*/\1/p')
+                command gsed -e 's/|/ /g' -ne 's/.*QUERY := {\([^}]*\)}.*/\1/p')
             _comp_delimited , -W '$queries'
             return
             ;;
diff --git a/completions-core/ssh.bash b/completions-core/ssh.bash
index 1ba59de..1aa0f30 100644
--- a/completions-core/ssh.bash
+++ b/completions-core/ssh.bash
@@ -498,13 +498,13 @@ _comp_cmd_scp__escape_path()
 
     if [[ $dirs_only ]]; then
         # escape problematic characters; remove non-dirs
-        command sed \
+        command gsed \
             -e '/[^/]$/d' \
             -e 's/'"$_comp_cmd_scp__path_esc"'/'"$escape_replacement"'/g'
     else
         # escape problematic characters; remove executable, symlink, pipe,
         # socket and door indicators; add space at end of file names
-        command sed \
+        command gsed \
             -e 's/[*@|=>]$//g' \
             -e 's/'"$_comp_cmd_scp__path_esc"'/'"$escape_replacement"'/g' \
             -e 's/[^/]$/& /g'
@@ -542,7 +542,7 @@ _comp_xfunc_scp_compgen_remote_files()
         #
         # In the following while-loop, we essentially do the following:
         #
-        #     REPLY=$(command sed -e 's/\\\\\\\('"$_comp_cmd_scp__path_esc"'\|$\)/\\\1/g' <<<"$REPLY")
+        #     REPLY=$(command gsed -e 's/\\\\\\\('"$_comp_cmd_scp__path_esc"'\|$\)/\\\1/g' <<<"$REPLY")
         #
         # We implement this by the Bash built-in features because POSIX BRE
         # does not support \|.  POSIX sed newly standardized the "-E" flag to
diff --git a/completions-core/strings.bash b/completions-core/strings.bash
index 16d40de..c7634d8 100644
--- a/completions-core/strings.bash
+++ b/completions-core/strings.bash
@@ -18,12 +18,12 @@ _comp_cmd_strings()
             ;;
         --target | -${noargopts}T)
             _comp_compgen_split -- "$(LC_ALL=C "$1" --help 2>/dev/null |
-                command sed -ne 's/: supported targets: \(.*\)/\1/p')"
+                command gsed -ne 's/: supported targets: \(.*\)/\1/p')"
             return
             ;;
         --encoding | -${noargopts}e)
             _comp_compgen_split -F , -- "$(LC_ALL=C "$1" --help 2>/dev/null |
-                command sed -ne 's/.*--encoding={\([^}]*\)}.*/\1/p')"
+                command gsed -ne 's/.*--encoding={\([^}]*\)}.*/\1/p')"
             return
             ;;
     esac
@@ -34,7 +34,7 @@ _comp_cmd_strings()
         # macOS: ... [-t format] [-number] [-n number] ...
         _comp_compgen_help ||
             _comp_compgen_usage - <<<"$("$1" --help 2>&1 |
-                command sed -e "s/\[-number\]//")"
+                command gsed -e "s/\[-number\]//")"
         [[ ${COMPREPLY-} == *= ]] && compopt -o nospace
         return
     fi
diff --git a/completions-core/svk.bash b/completions-core/svk.bash
index fc30648..a5585b9 100644
--- a/completions-core/svk.bash
+++ b/completions-core/svk.bash
@@ -198,7 +198,7 @@ _comp_cmd_svk()
                         path=//
                     fi
                     _comp_compgen_split -- "$("$1" list "$path" 2>/dev/null |
-                        command sed -e 's|\(.*\)|'"$path"'\1|')"
+                        command gsed -e 's|\(.*\)|'"$path"'\1|')"
                     ;;
                 *)
                     _comp_compgen_filedir
diff --git a/completions-core/sysbench.bash b/completions-core/sysbench.bash
index c161197..f54376f 100644
--- a/completions-core/sysbench.bash
+++ b/completions-core/sysbench.bash
@@ -75,7 +75,7 @@ _comp_cmd_sysbench()
             ;;
         --db-driver)
             _comp_compgen_split -- "$("$1" --test=oltp help 2>/dev/null |
-                command sed -e '/^.*database drivers:/,/^$/!d' \
+                command gsed -e '/^.*database drivers:/,/^$/!d' \
                     -ne 's/^  *\([^ ]*\) .*/\1/p')"
             return
             ;;
diff --git a/completions-core/tshark.bash b/completions-core/tshark.bash
index 1ad1d57..901d91b 100644
--- a/completions-core/tshark.bash
+++ b/completions-core/tshark.bash
@@ -24,7 +24,7 @@ _comp_cmd_tshark()
             else
                 [[ -v _comp_cmd_tshark__mut_prefs ]] ||
                     _comp_cmd_tshark__mut_prefs=$("$1" -G defaultprefs 2>/dev/null |
-                        command sed -ne 's/^#\{0,1\}\([a-z0-9_.-]\{1,\}:\).*/\1/p')
+                        command gsed -ne 's/^#\{0,1\}\([a-z0-9_.-]\{1,\}:\).*/\1/p')
                 _comp_compgen -P "$prefix" -- -W "$_comp_cmd_tshark__mut_prefs"
                 [[ ${COMPREPLY-} == *: ]] && compopt -o nospace
             fi
diff --git a/completions-core/valgrind.bash b/completions-core/valgrind.bash
index 3e41dee..366bd64 100644
--- a/completions-core/valgrind.bash
+++ b/completions-core/valgrind.bash
@@ -72,7 +72,7 @@ _comp_cmd_valgrind()
         --+([-A-Za-z0-9_]))
             # shellcheck disable=SC2086
             local value=$("$1" --help-debug $tool 2>/dev/null |
-                command sed \
+                command gsed \
                     -ne "s|^[[:blank:]]*$prev=\([^[:blank:]]\{1,\}\).*|\1|p")
             case $value in
                 \<file*\>)
diff --git a/completions-core/wget.bash b/completions-core/wget.bash
index 78df6ee..282575c 100644
--- a/completions-core/wget.bash
+++ b/completions-core/wget.bash
@@ -123,7 +123,7 @@ _comp_cmd_wget()
             return
             ;;
         --user | --http-user | --proxy-user | --ftp-user)
-            _comp_compgen_split -- "$(command sed -n \
+            _comp_compgen_split -- "$(command gsed -n \
                 '/^login/s/^[[:blank:]]*login[[:blank:]]//p' ~/.netrc \
                 2>/dev/null)"
             return
diff --git a/completions-core/wol.bash b/completions-core/wol.bash
index 06fdf98..a142d58 100644
--- a/completions-core/wol.bash
+++ b/completions-core/wol.bash
@@ -17,7 +17,7 @@ _comp_cmd_wol()
             _comp_compgen_split -- "$({
                 ip -c=never addr show || ip addr show || ifconfig -a
             } 2>/dev/null |
-                command sed \
+                command gsed \
                     -ne 's/.*[[:space:]]Bcast:\([^[:space:]]*\).*/\1/p' \
                     -ne 's/.*inet.*[[:space:]]brd[[:space:]]\([^[:space:]]*\).*/\1/p' \
                     -ne 's/.*[[:space:]]broadcast[[:space:]]\{1,\}\([^[:space:]]*\).*/\1/p')"
diff --git a/completions-core/wvdial.bash b/completions-core/wvdial.bash
index db28291..a756e0e 100644
--- a/completions-core/wvdial.bash
+++ b/completions-core/wvdial.bash
@@ -33,7 +33,7 @@ _comp_cmd_wvdial()
             done
             # parse config files for sections and
             # remove default section
-            _comp_compgen_split -l -X 'Defaults' -- "$(command sed -ne \
+            _comp_compgen_split -l -X 'Defaults' -- "$(command gsed -ne \
                 's/^\[Dialer \(.*\)\]$/\1/p' "$config" 2>/dev/null)"
             # escape spaces
             COMPREPLY=("${COMPREPLY[@]// /\\ }")
diff --git a/completions-core/xgamma.bash b/completions-core/xgamma.bash
index 5f6b72d..d0f833c 100644
--- a/completions-core/xgamma.bash
+++ b/completions-core/xgamma.bash
@@ -7,7 +7,7 @@ _comp_cmd_xgamma()
 
     case "$prev" in
         -screen)
-            local screens=$(xrandr --query 2>/dev/null | command sed -n \
+            local screens=$(xrandr --query 2>/dev/null | command gsed -n \
                 's|^Screen \{1,\}\(.*\):.*$|\1|p' 2>/dev/null)
             _comp_compgen -- -W "$screens"
             return
@@ -30,7 +30,7 @@ _comp_cmd_xgamma()
                 compopt -o nospace
             elif [[ $cur == :*.* ]]; then
                 # local screen numbers
-                local screens=$(xrandr --query 2>/dev/null | command sed -ne \
+                local screens=$(xrandr --query 2>/dev/null | command gsed -ne \
                     's|^Screen \{1,\}\(.*\):.*$|\1|p' 2>/dev/null)
                 cur=${cur#:}
                 _comp_compgen -P "${cur%.*}." -- -W '$screens'
diff --git a/completions-core/xrandr.bash b/completions-core/xrandr.bash
index 899706a..9007f90 100644
--- a/completions-core/xrandr.bash
+++ b/completions-core/xrandr.bash
@@ -9,20 +9,20 @@ _comp_cmd_xrandr__compgen_monitors()
 {
     _comp_compgen_split -- "$(
         "$1" --listmonitors 2>/dev/null |
-            command sed -ne 's/.* [0-9]*: [+*]*\([^ ]*\).*/\1/p'
+            command gsed -ne 's/.* [0-9]*: [+*]*\([^ ]*\).*/\1/p'
     )"
 }
 
 _comp_cmd_xrandr__compgen_providers()
 {
     _comp_compgen_split -- "$("$1" --listproviders 2>/dev/null |
-        command sed -ne "s/.*cap:.*$2.* name:\([^ ]*\).*/\1/p")"
+        command gsed -ne "s/.*cap:.*$2.* name:\([^ ]*\).*/\1/p")"
 }
 
 _comp_cmd_xrandr__compgen_modes()
 {
     _comp_compgen_split -- "$(
-        "$1" -q 2>/dev/null | command sed \
+        "$1" -q 2>/dev/null | command gsed \
             -e "1,/^$2 / d" \
             -e '/connected/,$ d' \
             -e '/^[[:space:]]*h: / d' \
@@ -34,7 +34,7 @@ _comp_cmd_xrandr__compgen_modes()
 _comp_cmd_xrandr__compgen_all_modes()
 {
     _comp_compgen_split -- "$(
-        "$1" -q 2>/dev/null | command sed \
+        "$1" -q 2>/dev/null | command gsed \
             -e '/^[^[:space:]].*/ d' \
             -e '/^[[:space:]]*h: / d' \
             -e '/^[[:space:]]*v: / d' \
@@ -161,13 +161,13 @@ _comp_cmd_xrandr()
     if [[ $has_output ]]; then
         _comp_compgen -v options help - <<<"$(
             "$1" --help 2>/dev/null |
-                command sed -e 's/ or /\n  /g' -e 's/<[^>]*>]//g'
+                command gsed -e 's/ or /\n  /g' -e 's/<[^>]*>]//g'
         )"
     else
         # if no output is specified, remove per-output options
         _comp_compgen -v options help - <<<"$(
             "$1" --help 2>/dev/null |
-                command sed -e '/^  -/!d' -e 's/ or /\n  /g' -e 's/<[^>]*>]//g'
+                command gsed -e '/^  -/!d' -e 's/ or /\n  /g' -e 's/<[^>]*>]//g'
         )"
     fi
 
diff --git a/completions-core/xsltproc.bash b/completions-core/xsltproc.bash
index c307e86..bb2e42f 100644
--- a/completions-core/xsltproc.bash
+++ b/completions-core/xsltproc.bash
@@ -16,7 +16,7 @@ _comp_cmd_xsltproc()
             ;;
         --encoding)
             # some aliases removed
-            local encodings=$(iconv -l | command sed -e 's/\/.*//')
+            local encodings=$(iconv -l | command gsed -e 's/\/.*//')
             _comp_compgen -- -X '@(UTF[1378]|8859|ISO[0-9_])*' -W '$encodings'
             return
             ;;
diff --git a/completions-fallback/adb.bash b/completions-fallback/adb.bash
index 5e66220..cabb1f3 100644
--- a/completions-fallback/adb.bash
+++ b/completions-fallback/adb.bash
@@ -6,7 +6,7 @@
 _comp_cmd_adb__command_usage()
 {
     _comp_compgen_help - <<<"$("$1" help 2>&1 |
-        command sed -e "/^ *\(adb \)\{0,1\} *$2 /!d;s/[]|[]/\n/g")"
+        command gsed -e "/^ *\(adb \)\{0,1\} *$2 /!d;s/[]|[]/\n/g")"
 }
 
 _comp_cmd_adb()
@@ -57,7 +57,7 @@ _comp_cmd_adb()
             ;;
         forward)
             _comp_compgen_help - <<<"$("$1" help 2>&1 |
-                command sed -ne "s/^ *adb  *forward  *-/-/p")"
+                command gsed -ne "s/^ *adb  *forward  *-/-/p")"
             ;;
         reboot)
             _comp_compgen -- -W 'bootloader recovery'
diff --git a/completions-fallback/mock.bash b/completions-fallback/mock.bash
index db8b69d..67b318a 100644
--- a/completions-fallback/mock.bash
+++ b/completions-fallback/mock.bash
@@ -47,7 +47,7 @@ _comp_cmd_mock()
             # (e.g. ix86 chroot builds in x86_64 mock host)
             # This would actually depend on what the target root
             # can be used to build for...
-            _comp_compgen_split -- "$(command rpm --showrc | command sed -ne \
+            _comp_compgen_split -- "$(command rpm --showrc | command gsed -ne \
                 "s/^[[:space:]]*${regex_header}[[:space:]]*:[[:space:]]*\(.*\)/\1/p")"
             return
             ;;
diff --git a/completions-fallback/modprobe.bash b/completions-fallback/modprobe.bash
index f1aa04a..add7686 100644
--- a/completions-fallback/modprobe.bash
+++ b/completions-fallback/modprobe.bash
@@ -93,7 +93,7 @@ _comp_cmd_modprobe()
                     prev=${cur%%=*}
                     cur=${cur#*=}
                     if PATH="$PATH:/sbin" modinfo -p "$module" 2>/dev/null |
-                        command grep -q "^$prev:.*(bool)"; then
+                        command ggrep -q "^$prev:.*(bool)"; then
                         local choices="on off"
                         [[ $cur ]] && choices="1 0 y Y n N on off"
                         _comp_compgen -- -W "$choices"
diff --git a/completions-fallback/modules.bash b/completions-fallback/modules.bash
index a30711d..b2da658 100644
--- a/completions-fallback/modules.bash
+++ b/completions-fallback/modules.bash
@@ -23,13 +23,13 @@
 
 _comp_cmd_module__compgen_list()
 {
-    local modules=$(command sed 's/:/ /g' <<<"$LOADEDMODULES" | sort)
+    local modules=$(command gsed 's/:/ /g' <<<"$LOADEDMODULES" | sort)
     _comp_compgen -- -W "$modules"
 }
 
 _comp_cmd_module__compgen_path()
 {
-    local modules=$(command sed 's/:/ /g' <<<"$MODULEPATH" | sort)
+    local modules=$(command gsed 's/:/ /g' <<<"$MODULEPATH" | sort)
     _comp_compgen -- -W "$modules"
 }
 
@@ -37,8 +37,8 @@ _comp_cmd_module__compgen_avail()
 {
     local modules=$(
         module avail 2>&1 |
-            command grep -E -v '^(-|$)' |
-            xargs printf '%s\n' | command sed -e 's/(default)//g' | sort
+            command ggrep -E -v '^(-|$)' |
+            xargs printf '%s\n' | command gsed -e 's/(default)//g' | sort
     )
     _comp_compgen -- -W "$modules"
 }
diff --git a/completions-fallback/mount.bash b/completions-fallback/mount.bash
index 2fce8df..11f95c3 100644
--- a/completions-fallback/mount.bash
+++ b/completions-fallback/mount.bash
@@ -46,8 +46,8 @@ _comp_cmd_mount()
         if [[ $host ]]; then
             _comp_compgen -P "//$host" split -- "$(
                 smbclient -d 0 -NL "$host" 2>/dev/null |
-                    command sed -ne '/^[[:blank:]]*Sharename/,/^$/p' |
-                    command sed -ne '3,$s|^[^A-Za-z]*\([^[:blank:]]*\).*$|/\1|p'
+                    command gsed -ne '/^[[:blank:]]*Sharename/,/^$/p' |
+                    command gsed -ne '3,$s|^[^A-Za-z]*\([^[:blank:]]*\).*$|/\1|p'
             )"
         fi
     elif [[ -r /etc/vfstab ]]; then
diff --git a/completions-fallback/mount.linux.bash b/completions-fallback/mount.linux.bash
index d8f3885..a08b793 100644
--- a/completions-fallback/mount.linux.bash
+++ b/completions-fallback/mount.linux.bash
@@ -233,8 +233,8 @@ _comp_cmd_mount()
         if [[ $host ]]; then
             _comp_compgen -P "//$host" split -- "$(
                 smbclient -d 0 -NL "$host" 2>/dev/null |
-                    command sed -ne '/^[[:blank:]]*Sharename/,/^$/p' |
-                    command sed -ne '3,$s|^[^A-Za-z]*\([^[:blank:]]*\).*$|/\1|p'
+                    command gsed -ne '/^[[:blank:]]*Sharename/,/^$/p' |
+                    command gsed -ne '3,$s|^[^A-Za-z]*\([^[:blank:]]*\).*$|/\1|p'
             )"
         fi
     fi
diff --git a/completions-fallback/nox.bash b/completions-fallback/nox.bash
index 626d591..b7a5541 100644
--- a/completions-fallback/nox.bash
+++ b/completions-fallback/nox.bash
@@ -4,7 +4,7 @@
 # This serves as a fallback in case the completion is not installed otherwise.
 
 eval -- "$(
-    pathcmd=$(type -P -- "$1" 2>/dev/null | command sed 's,/[^/]*$,,')
+    pathcmd=$(type -P -- "$1" 2>/dev/null | command gsed 's,/[^/]*$,,')
     [[ $pathcmd ]] && PATH=$pathcmd${PATH:+:$PATH}
     register-python-argcomplete --shell bash "$1" 2>/dev/null ||
         register-python-argcomplete3 --shell bash "$1" 2>/dev/null
diff --git a/completions-fallback/tox.bash b/completions-fallback/tox.bash
index 375bea7..4e9e184 100644
--- a/completions-fallback/tox.bash
+++ b/completions-fallback/tox.bash
@@ -40,7 +40,7 @@ _comp_cmd_tox()
                 } 2>/dev/null
             )
             [[ $envs ]] || envs=$(
-                command sed -e 's/,/ /g' -ne 's/^envlist[[:space:]]*=//p' \
+                command gsed -e 's/,/ /g' -ne 's/^envlist[[:space:]]*=//p' \
                     tox.ini 2>/dev/null
             )
             _comp_delimited , -X '*[{}]*' -W "$envs ALL"
diff --git a/completions-fallback/update-alternatives.bash b/completions-fallback/update-alternatives.bash
index 94719db..60fcd07 100644
--- a/completions-fallback/update-alternatives.bash
+++ b/completions-fallback/update-alternatives.bash
@@ -91,7 +91,7 @@ _comp_cmd_update_alternatives()
             _comp_cmd_update_alternatives__installed
             ;;
         *)
-            _comp_compgen_help - <<<"$(LANG=C "$1" --help 2>&1 | command sed '
+            _comp_compgen_help - <<<"$(LANG=C "$1" --help 2>&1 | command gsed '
                 /usage:/,/^[[:space:]]*$/{
                   s/^\([[:space:]]*usage:\)\{0,1\}[[:space:]]*[^[:space:]]*alternatives /  /
                   s/^[[:space:]]*\[\(-.*\)\]/  \1/
diff --git a/completions-fallback/yum.bash b/completions-fallback/yum.bash
index 625be29..586db6d 100644
--- a/completions-fallback/yum.bash
+++ b/completions-fallback/yum.bash
@@ -9,12 +9,12 @@ _comp_cmd_yum__list()
         # Try to strip in between headings like "Available Packages"
         # This will obviously only work for English :P
         _comp_split COMPREPLY "$(yum -d 0 -C list "$1" "$cur*" 2>/dev/null |
-            command sed -ne '/^Available /d' -e '/^Installed /d' \
+            command gsed -ne '/^Available /d' -e '/^Installed /d' \
                 -e '/^Updated /d' -e 's/[[:space:]].*//p')"
     else
         # Drop first line (e.g. "Updated Packages")
         _comp_split COMPREPLY "$(yum -d 0 -C list "$1" "$cur*" 2>/dev/null |
-            command sed -ne 1d -e 's/[[:space:]].*//p')"
+            command gsed -ne 1d -e 's/[[:space:]].*//p')"
     fi
 }
 
@@ -25,7 +25,7 @@ _comp_cmd_yum__compgen_repolist()
     # Drop first ("repo id      repo name") and last ("repolist: ...") rows
     _comp_compgen_split -- "$(
         yum --noplugins -C repolist "$1" 2>/dev/null |
-            command sed -ne '/^repo[[:space:]]\{1,\}id/d' -e '/^repolist:/d' \
+            command gsed -ne '/^repo[[:space:]]\{1,\}id/d' -e '/^repolist:/d' \
                 -e 's/[[:space:]].*//p'
     )"
 }
@@ -36,7 +36,7 @@ _comp_cmd_yum__compgen_plugins()
     _comp_expand_glob files '/usr/lib/yum-plugins/*.py{,c,o}' || return
     _comp_compgen -U files split -- "$(
         printf '%s\n' "${files[@]}" |
-            command sed -ne 's|.*/\([^./]*\)\.py[co]\{0,1\}$|\1|p' | sort -u
+            command gsed -ne 's|.*/\([^./]*\)\.py[co]\{0,1\}$|\1|p' | sort -u
     )"
 }