fix: quote $split of $split && return for custom IFS

bash_completion

@@ -983,21 +983,21 @@ _comp_variable_assignments()
 #                     argument $2 is the string before the cursor in the
 #                     current word.  The third argument $3 is the previous
 #                     word.
-# @var[out] cur       Reconstructed current word
-# @var[out] prev      Reconstructed previous word
-# @var[out] words     Reconstructed words
-# @var[out] cword     Current word index in `words`
-# @var[out] comp_args Original arguments specified to the completion function
-#                     are saved in this array, if the arguments $1...$3 is
-#                     specified.
-# @var[out,opt] split When "-s" is specified, `true/false` is set depending on
-#                     whether the split happened.
+# @var[out] cur           Reconstructed current word
+# @var[out] prev          Reconstructed previous word
+# @var[out] words         Reconstructed words
+# @var[out] cword         Current word index in `words`
+# @var[out] comp_args     Original arguments specified to the completion function
+#                         are saved in this array, if the arguments $1...$3 is
+#                         specified.
+# @var[out,opt] was_split When "-s" is specified, `"set"/""` is set depending
+#                         on whether the split happened.
 # @return  True (0) if completion needs further processing,
 #          False (> 0) no further processing is necessary.
 #
 _comp_initialize()
 {
-    local exclude="" outx errx inx
+    local exclude="" opt_split="" outx errx inx
 
     local flag OPTIND=1 OPTARG="" OPTERR=0
     while getopts "n:e:o:i:s" flag "$@"; do
@@ -1007,7 +1007,8 @@ _comp_initialize()
             o) outx=$OPTARG ;;
             i) inx=$OPTARG ;;
             s)
-                split=false
+                opt_split="set"
+                was_split=""
                 exclude+="="
                 ;;
             *)
@@ -1065,7 +1066,7 @@ _comp_initialize()
     ((cword <= 0)) && return 1
     prev=${words[cword - 1]}
 
-    [[ ${split-} ]] && _split_longopt && split=true
+    [[ $opt_split ]] && _split_longopt && was_split="set"
 
     return 0
 }
@@ -2371,7 +2372,7 @@ _complete_as_root()
 
 _longopt()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     case "${prev,,}" in
@@ -2402,7 +2403,7 @@ _longopt()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         _comp_compgen COMPREPLY -W "$(LC_ALL=C $1 --help 2>&1 |

bash_completion.d/000_bash_completion_compat.bash

@@ -4,7 +4,6 @@ _comp_deprecate_func _userland _comp_userland
 _comp_deprecate_func _sysvdirs _comp_sysvdirs
 _comp_deprecate_func _have _comp_have_command
 _comp_deprecate_func _rl_enabled _comp_readline_variable_on
-_comp_deprecate_func _init_completion _comp_initialize
 _comp_deprecate_func _command_offset _comp_command_offset
 _comp_deprecate_func _command _comp_command
 _comp_deprecate_func _root_command _comp_root_command
@@ -178,6 +177,59 @@ _realcommand()
     return $rc
 }
 
+# Initialize completion and deal with various general things: do file
+# and variable completion where appropriate, and adjust prev, words,
+# and cword as if no redirections exist so that completions do not
+# need to deal with them.  Before calling this function, make sure
+# cur, prev, words, and cword are local, ditto split if you use -s.
+#
+# Options:
+#     -n EXCLUDE  Passed to _comp_get_words -n with redirection chars
+#     -e XSPEC    Passed to _filedir as first arg for stderr redirections
+#     -o XSPEC    Passed to _filedir as first arg for other output redirections
+#     -i XSPEC    Passed to _filedir as first arg for stdin redirections
+#     -s          Split long options with _split_longopt, implies -n =
+# @var[out] cur       Reconstructed current word
+# @var[out] prev      Reconstructed previous word
+# @var[out] words     Reconstructed words
+# @var[out] cword     Current word index in `words`
+# @var[out,opt] split When "-s" is specified, `"true"/"false"` is set depending
+#                     on whether the split happened.
+# @return  True (0) if completion needs further processing,
+#          False (> 0) no further processing is necessary.
+#
+# @deprecated Use the new interface `_comp_initialize`.  The new interface
+# supports the same set of options.  The new interface receives additional
+# arguments $1 (command name), $2 (part of current word before the cursor), and
+# $3 (previous word) that are specified to the completion function by Bash.
+# When `-s` is specified, instead of variable `split`, the new interface sets
+# variable `was_split` to the value "set"/"" when the split happened/not
+# happened.
+_init_completion()
+{
+    local was_split
+    _comp_initialize "$@"
+    local rc=$?
+
+    # When -s is specified, convert "split={set,}" to "split={true,false}"
+    local flag OPTIND=1 OPTARG="" OPTERR=0
+    while getopts "n:e:o:i:s" flag "$@"; do
+        case $flag in
+            [neoi]) ;;
+            s)
+                if [[ $was_split ]]; then
+                    split=true
+                else
+                    split=false
+                fi
+                break
+                ;;
+        esac
+    done
+
+    return "$rc"
+}
+
 # @deprecated Use the variable `_comp_backup_glob` instead.  This is the
 # backward-compatibility name.
 # shellcheck disable=SC2154  # defined in the main "bash_completion"

completions/2to3

@@ -2,7 +2,7 @@
 
 _2to3()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     case $prev in
@@ -24,7 +24,7 @@ _2to3()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))

completions/_mock

@@ -5,7 +5,7 @@
 
 _comp_cmd_mock()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     local plugins='tmpfs root_cache yum_cache bind_mount ccache'
@@ -55,7 +55,7 @@ _comp_cmd_mock()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))

completions/_repomanage

@@ -5,12 +5,12 @@
 
 _comp_cmd_repomanage()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     [[ $prev == -@([hk]|-help|-keep) ]] && return
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))

completions/_rtcwake

@@ -5,7 +5,7 @@
 
 _comp_cmd_rtcwake()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     case "$prev" in
@@ -24,7 +24,7 @@ _comp_cmd_rtcwake()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))
 } &&

completions/_su

@@ -10,7 +10,7 @@ fi
 
 _comp_cmd_su()
 { # linux-specific completion
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     case "$prev" in
@@ -26,7 +26,7 @@ _comp_cmd_su()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))

completions/_udevadm

@@ -5,7 +5,7 @@
 
 _comp_cmd_udevadm()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     local i udevcmd has_udevcmd=""
@@ -52,7 +52,7 @@ _comp_cmd_udevadm()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ ! $has_udevcmd ]]; then
         case $cur in

completions/_yum

@@ -39,7 +39,7 @@ _yum_plugins()
 
 _comp_cmd_yum()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     local special="" i
@@ -136,7 +136,7 @@ _comp_cmd_yum()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))

completions/a2x

@@ -2,7 +2,7 @@
 
 _a2x()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     local noargopts='!(-*|*[aDd]*)'
@@ -26,7 +26,7 @@ _a2x()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1" --help)' -- "$cur"))

completions/aclocal

@@ -2,7 +2,7 @@
 
 _aclocal()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     case "$prev" in
@@ -25,7 +25,7 @@ _aclocal()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))
     [[ ${COMPREPLY-} == *= ]] && compopt -o nospace

completions/add_members

@@ -2,7 +2,7 @@
 
 _add_members()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     case $prev in
@@ -16,7 +16,7 @@ _add_members()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '--regular-members-file --digest-members-file

completions/appdata-validate

@@ -2,7 +2,7 @@
 
 _appdata_validate()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     case $prev in
@@ -17,7 +17,7 @@ _appdata_validate()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))

completions/apt-mark

@@ -2,7 +2,7 @@
 
 _comp_cmd_apt_mark()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     local special="" i
@@ -49,7 +49,7 @@ _comp_cmd_apt_mark()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '--file= --help --version --config-file

completions/arch

@@ -5,7 +5,7 @@
 _comp_have_command mailmanctl &&
     _arch()
     {
-        local cur prev words cword split comp_args
+        local cur prev words cword was_split comp_args
         _comp_initialize -s -- "$@" || return
 
         case $prev in
@@ -19,7 +19,7 @@ _comp_have_command mailmanctl &&
                 ;;
         esac
 
-        $split && return
+        [[ $was_split ]] && return
 
         if [[ $cur == -* ]]; then
             COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))

completions/asciidoc

@@ -9,7 +9,7 @@ _comp_deprecate_func _asciidoc_doctype _comp_xfunc_asciidoc_doctype
 
 _asciidoc()
 {
-    local cur prev words cword split comp_args
+    local cur prev words cword was_split comp_args
     _comp_initialize -s -- "$@" || return
 
     local noargopts='!(-*|*[abfdo]*)'
@@ -40,7 +40,7 @@ _asciidoc()
             ;;
     esac
 
-    $split && return
+    [[ $was_split ]] && return
 
     if [[ $cur == -* ]]; then
         COMPREPLY=($(compgen -W '$(_parse_help "$1" "--help manpage")' \