Attachment 234598 Details for Bug 264592 – bash -x: Working Logs

bash -x: Working Logs

Trace Logs (bash -x).Txt (text/plain), 22.25 KB, created by CrazyMihey on 2022-06-10 11:34:28 UTC

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Creator: CrazyMihey

Created: 2022-06-10 11:34:28 UTC

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patch

obsolete

># uname -v | tr "\r\n" " " && uname -p
>FreeBSD 12.1-RELEASE-p2 r358570 CrazyBook  i386
># env LANG="C" bash --version
>GNU bash, version 5.1.16(0)-release (i386-portbld-freebsd12.1)
>Copyright (C) 2020 Free Software Foundation, Inc.
>License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>
>This is free software; you are free to change and redistribute it.
>There is NO WARRANTY, to the extent permitted by law.
>
># pkg info bash-completion
>bash-completion-2.11_1,2
>Name           : bash-completion
>Version        : 2.11_1,2
>Installed on   : Sun May 29 16:49:05 2022 MSK
>Origin         : shells/bash-completion
>Architecture   : FreeBSD:13:*
>Prefix         : /usr/local
>Categories     : shells
>Licenses       : BSD2CLAUSE, GPLv2+
>Maintainer     : sunpoet@FreeBSD.org
>WWW            : https://github.com/scop/bash-completion
>Comment        : Programmable completion library for Bash
>Options        :
>        BASH_SHARED    : on
>        BASH_STATIC    : off
>        CMAKE_MODULES  : on
>        DOCS           : on
>Annotations    :
>Flat size      : 1.03MiB
>Description    :
>This is a programmable completion convenience library for the Bash shell. It
>features the ability to tab-complete arguments for many common programs.
>
>Completion functions for FreeBSD-specific software are developed independently
>as an extension to the official bash-completion library. The development takes
>place on GitHub: https://github.com/0mp/bash-completion-freebsd
>
>WWW: https://github.com/scop/bash-completion
>
># bash -x
># grep --ign				# Pressing <Tab> Key.
>+ local cur prev words cword split
>+ _init_completion -s
>+ local exclude= flag outx errx inx OPTIND=1
>+ getopts n:e:o:i:s flag -s
>+ case $flag in
>+ split=false
>+ exclude+==
>+ getopts n:e:o:i:s flag -s
>+ COMPREPLY=()
>+ local 'redir=@(?([0-9])<|?([0-9&])>?(>)|>&)'
>+ _get_comp_words_by_ref -n '=<>&' cur prev words cword
>+ local exclude flag i OPTIND=1
>+ words=()
>+ local cur cword words
>+ upargs=()
>+ upvars=()
>+ local upargs upvars vcur vcword vprev vwords
>+ getopts c:i:n:p:w: flag -n '=<>&' cur prev words cword
>+ case $flag in
>+ exclude='=<>&'
>+ getopts c:i:n:p:w: flag -n '=<>&' cur prev words cword
>+ [[ 6 -ge 3 ]]
>+ case ${!OPTIND} in
>+ vcur=cur
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 4 ]]
>+ case ${!OPTIND} in
>+ vprev=prev
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 5 ]]
>+ case ${!OPTIND} in
>+ vwords=words
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 6 ]]
>+ case ${!OPTIND} in
>+ vcword=cword
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 7 ]]
>+ __get_cword_at_cursor_by_ref '=<>&' words cword cur
>+ words=()
>+ local cword words
>+ __reassemble_comp_words_by_ref '=<>&' words cword
>+ local exclude i j line ref
>+ [[ -n =<>& ]]
>+ exclude='[=<>&]'
>+ printf -v cword %s 1
>+ [[ -v exclude ]]
>+ line='grep --ign'
>+ (( i = 0, j = 0 ))
>+ (( i < 2 ))
>+ [[ 0 -gt 0 ]]
>+ ref='words[0]'
>+ printf -v 'words[0]' %s grep
>+ line=' --ign'
>+ (( i == COMP_CWORD ))
>+ (( i++, j++ ))
>+ (( i < 2 ))
>+ [[ 1 -gt 0 ]]
>+ [[ --ign == +([=<>&]) ]]
>+ ref='words[1]'
>+ printf -v 'words[1]' %s --ign
>+ line=
>+ (( i == COMP_CWORD ))
>+ printf -v cword %s 1
>+ (( i++, j++ ))
>+ (( i < 2 ))
>+ (( i == COMP_CWORD ))
>+ local i cur= index=10 'lead=grep --ign'
>+ [[ 10 -gt 0 ]]
>+ [[ -n grep --ign ]]
>+ [[ -n grep--ign ]]
>+ cur='grep --ign'
>+ (( i = 0 ))
>+ (( i <= cword ))
>+ [[ 10 -ge 4 ]]
>+ [[ grep != \g\r\e\p ]]
>+ (( i < cword ))
>+ local old_size=10
>+ cur=' --ign'
>+ local new_size=6
>+ (( index -= old_size - new_size ))
>+ (( ++i ))
>+ (( i <= cword ))
>+ [[ 6 -ge 5 ]]
>+ [[  --ig != \-\-\i\g\n ]]
>+ cur=--ign
>+ (( index > 0 ))
>+ (( index-- ))
>+ [[ 5 -ge 5 ]]
>+ [[ --ign != \-\-\i\g\n ]]
>+ (( i < cword ))
>+ (( ++i ))
>+ (( i <= cword ))
>+ [[ -n --ign ]]
>+ [[ ! -n --ign ]]
>+ (( index < 0 ))
>+ local words cword cur
>+ _upvars -a2 words grep --ign -v cword 1 -v cur --ign
>+ (( 10 ))
>+ (( 10 ))
>+ case $1 in
>+ [[ -n 2 ]]
>+ printf %d 2
>+ [[ -n words ]]
>+ unset -v words
>+ eval 'words=("${@:3:2}")'
>++ words=("${@:3:2}")
>+ shift 4
>+ (( 6 ))
>+ case $1 in
>+ [[ -n cword ]]
>+ unset -v cword
>+ eval 'cword="$3"'
>++ cword=1
>+ shift 3
>+ (( 3 ))
>+ case $1 in
>+ [[ -n cur ]]
>+ unset -v cur
>+ eval 'cur="$3"'
>++ cur=--ign
>+ shift 3
>+ (( 0 ))
>+ [[ -v vcur ]]
>+ upvars+=("$vcur")
>+ upargs+=(-v $vcur "$cur")
>+ [[ -v vcword ]]
>+ upvars+=("$vcword")
>+ upargs+=(-v $vcword "$cword")
>+ [[ -v vprev ]]
>+ [[ 1 -ge 1 ]]
>+ upvars+=("$vprev")
>+ upargs+=(-v $vprev "${words[cword - 1]}")
>+ [[ -v vwords ]]
>+ upvars+=("$vwords")
>+ upargs+=(-a${#words[@]} $vwords ${words+"${words[@]}"})
>+ (( 4 ))
>+ local cur cword prev words
>+ _upvars -v cur --ign -v cword 1 -v prev grep -a2 words grep --ign
>+ (( 13 ))
>+ (( 13 ))
>+ case $1 in
>+ [[ -n cur ]]
>+ unset -v cur
>+ eval 'cur="$3"'
>++ cur=--ign
>+ shift 3
>+ (( 10 ))
>+ case $1 in
>+ [[ -n cword ]]
>+ unset -v cword
>+ eval 'cword="$3"'
>++ cword=1
>+ shift 3
>+ (( 7 ))
>+ case $1 in
>+ [[ -n prev ]]
>+ unset -v prev
>+ eval 'prev="$3"'
>++ prev=grep
>+ shift 3
>+ (( 4 ))
>+ case $1 in
>+ [[ -n 2 ]]
>+ printf %d 2
>+ [[ -n words ]]
>+ unset -v words
>+ eval 'words=("${@:3:2}")'
>++ words=("${@:3:2}")
>+ shift 4
>+ (( 0 ))
>+ _variables
>+ [[ --ign =~ ^(\$(\{[!#]?)?)([A-Za-z0-9_]*)$ ]]
>+ [[ --ign =~ ^(\$\{[#!]?)([A-Za-z0-9_]*)\[([^]]*)$ ]]
>+ [[ --ign =~ ^\$\{[#!]?[A-Za-z0-9_]*\[.*]$ ]]
>+ case ${prev-} in
>+ return 1
>+ [[ --ign == @(?([0-9])<|?([0-9&])>?(>)|>&)* ]]
>+ [[ grep == @(?([0-9])<|?([0-9&])>?(>)|>&) ]]
>+ local i skip
>+ (( i = 1 ))
>+ (( i < 2 ))
>+ [[ --ign == @(?([0-9])<|?([0-9&])>?(>)|>&)* ]]
>+ (( i++ ))
>+ (( 1 ))
>+ (( i < 2 ))
>+ (( cword <= 0 ))
>+ prev=grep
>+ [[ -n false ]]
>+ _split_longopt
>+ [[ --ign == --?*=* ]]
>+ return 1
>+ return 0
>+ case "${prev,,}" in
>+ false
>+ [[ --ign == -* ]]
>+ COMPREPLY=($(compgen -W "$(LC_ALL=C $1 --help 2>&1 |
>            while read -r line; do
>                [[ $line =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]] &&
>                    printf '%s\n' ${BASH_REMATCH[0]}
>            done)" -- "$cur"))
>+++ LC_ALL=C
>+++ grep --help
>+++ read -r line
>+++ [[ Usage: grep [OPTION]... PATTERN [FILE] ... =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ Search for PATTERN in each FILE or standard input. =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ Example: grep -i 'hello world' menu.h main.c =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ '' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ Regexp selection and interpretation: =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -E, --extended-regexp     PATTERN is an extended regular expression =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --extended-regexp
>+++ read -r line
>+++ [[ -F, --fixed-strings       PATTERN is a set of newline-separated strings =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --fixed-strings
>+++ read -r line
>+++ [[ -G, --basic-regexp        PATTERN is a basic regular expression =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --basic-regexp
>+++ read -r line
>+++ [[ -P, --perl-regexp         PATTERN is a Perl regular expression =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --perl-regexp
>+++ read -r line
>+++ [[ -e, --regexp=PATTERN      use PATTERN as a regular expression =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --regexp=
>+++ read -r line
>+++ [[ -f, --file=FILE           obtain PATTERN from FILE =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --file=
>+++ read -r line
>+++ [[ -i, --ignore-case         ignore case distinctions =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --ignore-case
>+++ read -r line
>+++ [[ -w, --word-regexp         force PATTERN to match only whole words =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --word-regexp
>+++ read -r line
>+++ [[ -x, --line-regexp         force PATTERN to match only whole lines =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --line-regexp
>+++ read -r line
>+++ [[ -z, --null-data           a data line ends in 0 byte, not newline =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --null-data
>+++ read -r line
>+++ [[ '' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ Miscellaneous: =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -s, --no-messages         suppress error messages =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --no-messages
>+++ read -r line
>+++ [[ -v, --invert-match        select non-matching lines =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --invert-match
>+++ read -r line
>+++ [[ -V, --version             print version information and exit =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --version
>+++ read -r line
>+++ [[ --help                display this help and exit =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --help
>+++ read -r line
>+++ [[ -J, --bz2decompress       decompress bzip2'ed input before searching =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --bz2decompress
>+++ read -r line
>+++ [[ -Z, --decompress          decompress input before searching (HAVE_LIBZ=1) =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --decompress
>+++ read -r line
>+++ [[ --mmap                use memory-mapped input if possible =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --mmap
>+++ read -r line
>+++ [[ '' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ Output control: =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -m, --max-count=NUM       stop after NUM matches =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --max-count=
>+++ read -r line
>+++ [[ -b, --byte-offset         print the byte offset with output lines =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --byte-offset
>+++ read -r line
>+++ [[ -n, --line-number         print line number with output lines =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --line-number
>+++ read -r line
>+++ [[ --line-buffered       flush output on every line =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --line-buffered
>+++ read -r line
>+++ [[ -H, --with-filename       print the filename for each match =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --with-filename
>+++ read -r line
>+++ [[ -h, --no-filename         suppress the prefixing filename on output =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --no-filename
>+++ read -r line
>+++ [[ --label=LABEL         print LABEL as filename for standard input =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --label=
>+++ read -r line
>+++ [[ -o, --only-matching       show only the part of a line matching PATTERN =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --only-matching
>+++ read -r line
>+++ [[ -q, --quiet, --silent     suppress all normal output =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --quiet
>+++ read -r line
>+++ [[ --binary-files=TYPE   assume that binary files are TYPE =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --binary-files=
>+++ read -r line
>+++ [[ TYPE is 'binary', 'text', or 'without-match' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -a, --text                equivalent to --binary-files=text =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --text
>+++ read -r line
>+++ [[ -I                        equivalent to --binary-files=without-match =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --binary-files=
>+++ read -r line
>+++ [[ -d, --directories=ACTION  how to handle directories =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --directories=
>+++ read -r line
>+++ [[ ACTION is 'read', 'recurse', or 'skip' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -D, --devices=ACTION      how to handle devices, FIFOs and sockets =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --devices=
>+++ read -r line
>+++ [[ ACTION is 'read' or 'skip' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -R, -r, --recursive       equivalent to --directories=recurse =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --recursive
>+++ read -r line
>+++ [[ --include=PATTERN     files that match PATTERN will be examined =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --include=
>+++ read -r line
>+++ [[ --exclude=PATTERN     files that match PATTERN will be skipped. =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --exclude=
>+++ read -r line
>+++ [[ --exclude-from=FILE   files that match PATTERN in FILE will be skipped. =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --exclude-from=
>+++ read -r line
>+++ [[ -L, --files-without-match only print FILE names containing no match =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --files-without-match
>+++ read -r line
>+++ [[ -l, --files-with-matches  only print FILE names containing matches =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --files-with-matches
>+++ read -r line
>+++ [[ -c, --count               only print a count of matching lines per FILE =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --count
>+++ read -r line
>+++ [[ --null                print 0 byte after FILE name =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --null
>+++ read -r line
>+++ [[ '' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ Context control: =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -B, --before-context=NUM  print NUM lines of leading context =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --before-context=
>+++ read -r line
>+++ [[ -A, --after-context=NUM   print NUM lines of trailing context =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --after-context=
>+++ read -r line
>+++ [[ -C, --context=NUM         print NUM lines of output context =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --context=
>+++ read -r line
>+++ [[ -NUM                      same as --context=NUM =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --context=
>+++ read -r line
>+++ [[ --color[=WHEN], =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --color
>+++ read -r line
>+++ [[ --colour[=WHEN]       use markers to distinguish the matching string =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --colour
>+++ read -r line
>+++ [[ WHEN may be `always', `never' or `auto'. =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ -U, --binary              do not strip CR characters at EOL (MSDOS) =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --binary
>+++ read -r line
>+++ [[ -u, --unix-byte-offsets   report offsets as if CRs were not there (MSDOS) =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --unix-byte-offsets
>+++ read -r line
>+++ [[ '' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ `egrep' means `grep -E'.  `fgrep' means `grep -F'. =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ With no FILE, or when FILE is -, read standard input.  If less than =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ two FILEs given, assume -h.  Exit status is 0 if match, 1 if no match, =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ and 2 if trouble. =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ '' =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ Report bugs to <bug-gnu-utils@gnu.org>. =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>++ compgen -W '--extended-regexp
>--fixed-strings
>--basic-regexp
>--perl-regexp
>--regexp=
>--file=
>--ignore-case
>--word-regexp
>--line-regexp
>--null-data
>--no-messages
>--invert-match
>--version
>--help
>--bz2decompress
>--decompress
>--mmap
>--max-count=
>--byte-offset
>--line-number
>--line-buffered
>--with-filename
>--no-filename
>--label=
>--only-matching
>--quiet
>--binary-files=
>--text
>--binary-files=
>--directories=
>--devices=
>--recursive
>--include=
>--exclude=
>--exclude-from=
>--files-without-match
>--files-with-matches
>--count
>--null
>--before-context=
>--after-context=
>--context=
>--context=
>--color
>--colour
>--binary
>--unix-byte-offsets' -- --ign
>+ [[ --ignore-case == *= ]]
>ore-case
>#â	Completion Works
>#===============================================================#
># uname -v | tr "\r\n" " " && uname -p
>FreeBSD 13.1-RELEASE releng/13.1-n250148-fc952ac2212 GENERIC amd64
># env LANG="C" bash --version
>GNU bash, version 5.1.16(0)-release (amd64-portbld-freebsd13.1)
>Copyright (C) 2020 Free Software Foundation, Inc.
>License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>
>This is free software; you are free to change and redistribute it.
>There is NO WARRANTY, to the extent permitted by law.
># pkg info bash-completion
>bash-completion-2.11_1,2
>Name           : bash-completion
>Version        : 2.11_1,2
>Installed on   : Sun May 29 16:49:05 2022 MSK
>Origin         : shells/bash-completion
>Architecture   : FreeBSD:13:*
>Prefix         : /usr/local
>Categories     : shells
>Licenses       : BSD2CLAUSE, GPLv2+
>Maintainer     : sunpoet@FreeBSD.org
>WWW            : https://github.com/scop/bash-completion
>Comment        : Programmable completion library for Bash
>Options        :
>        BASH_SHARED    : on
>        BASH_STATIC    : off
>        CMAKE_MODULES  : on
>        DOCS           : on
>Annotations    :
>Flat size      : 1.03MiB
>Description    :
>This is a programmable completion convenience library for the Bash shell. It
>features the ability to tab-complete arguments for many common programs.
>
>Completion functions for FreeBSD-specific software are developed independently
>as an extension to the official bash-completion library. The development takes
>place on GitHub: https://github.com/0mp/bash-completion-freebsd
>
>WWW: https://github.com/scop/bash-completion
>
># bash -x
># grep --ign				# Pressing <Tab> Key.
>+ local cur prev words cword split
>+ _init_completion -s
>+ local exclude= flag outx errx inx OPTIND=1
>+ getopts n:e:o:i:s flag -s
>+ case $flag in
>+ split=false
>+ exclude+==
>+ getopts n:e:o:i:s flag -s
>+ COMPREPLY=()
>+ local 'redir=@(?([0-9])<|?([0-9&])>?(>)|>&)'
>+ _get_comp_words_by_ref -n '=<>&' cur prev words cword
>+ local exclude flag i OPTIND=1
>+ words=()
>+ local cur cword words
>+ upargs=()
>+ upvars=()
>+ local upargs upvars vcur vcword vprev vwords
>+ getopts c:i:n:p:w: flag -n '=<>&' cur prev words cword
>+ case $flag in
>+ exclude='=<>&'
>+ getopts c:i:n:p:w: flag -n '=<>&' cur prev words cword
>+ [[ 6 -ge 3 ]]
>+ case ${!OPTIND} in
>+ vcur=cur
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 4 ]]
>+ case ${!OPTIND} in
>+ vprev=prev
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 5 ]]
>+ case ${!OPTIND} in
>+ vwords=words
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 6 ]]
>+ case ${!OPTIND} in
>+ vcword=cword
>+ (( OPTIND += 1 ))
>+ [[ 6 -ge 7 ]]
>+ __get_cword_at_cursor_by_ref '=<>&' words cword cur
>+ words=()
>+ local cword words
>+ __reassemble_comp_words_by_ref '=<>&' words cword
>+ local exclude i j line ref
>+ [[ -n =<>& ]]
>+ exclude='[=<>&]'
>+ printf -v cword %s 1
>+ [[ -v exclude ]]
>+ line='grep --ign'
>+ (( i = 0, j = 0 ))
>+ (( i < 2 ))
>+ [[ 0 -gt 0 ]]
>+ ref='words[0]'
>+ printf -v 'words[0]' %s grep
>+ line=' --ign'
>+ (( i == COMP_CWORD ))
>+ (( i++, j++ ))
>+ (( i < 2 ))
>+ [[ 1 -gt 0 ]]
>+ [[ --ign == +([=<>&]) ]]
>+ ref='words[1]'
>+ printf -v 'words[1]' %s --ign
>+ line=
>+ (( i == COMP_CWORD ))
>+ printf -v cword %s 1
>+ (( i++, j++ ))
>+ (( i < 2 ))
>+ (( i == COMP_CWORD ))
>+ local i cur= index=10 'lead=grep --ign'
>+ [[ 10 -gt 0 ]]
>+ [[ -n grep --ign ]]
>+ [[ -n grep--ign ]]
>+ cur='grep --ign'
>+ (( i = 0 ))
>+ (( i <= cword ))
>+ [[ 10 -ge 4 ]]
>+ [[ grep != \g\r\e\p ]]
>+ (( i < cword ))
>+ local old_size=10
>+ cur=' --ign'
>+ local new_size=6
>+ (( index -= old_size - new_size ))
>+ (( ++i ))
>+ (( i <= cword ))
>+ [[ 6 -ge 5 ]]
>+ [[  --ig != \-\-\i\g\n ]]
>+ cur=--ign
>+ (( index > 0 ))
>+ (( index-- ))
>+ [[ 5 -ge 5 ]]
>+ [[ --ign != \-\-\i\g\n ]]
>+ (( i < cword ))
>+ (( ++i ))
>+ (( i <= cword ))
>+ [[ -n --ign ]]
>+ [[ ! -n --ign ]]
>+ (( index < 0 ))
>+ local words cword cur
>+ _upvars -a2 words grep --ign -v cword 1 -v cur --ign
>+ (( 10 ))
>+ (( 10 ))
>+ case $1 in
>+ [[ -n 2 ]]
>+ printf %d 2
>+ [[ -n words ]]
>+ unset -v words
>+ eval 'words=("${@:3:2}")'
>++ words=("${@:3:2}")
>+ shift 4
>+ (( 6 ))
>+ case $1 in
>+ [[ -n cword ]]
>+ unset -v cword
>+ eval 'cword="$3"'
>++ cword=1
>+ shift 3
>+ (( 3 ))
>+ case $1 in
>+ [[ -n cur ]]
>+ unset -v cur
>+ eval 'cur="$3"'
>++ cur=--ign
>+ shift 3
>+ (( 0 ))
>+ [[ -v vcur ]]
>+ upvars+=("$vcur")
>+ upargs+=(-v $vcur "$cur")
>+ [[ -v vcword ]]
>+ upvars+=("$vcword")
>+ upargs+=(-v $vcword "$cword")
>+ [[ -v vprev ]]
>+ [[ 1 -ge 1 ]]
>+ upvars+=("$vprev")
>+ upargs+=(-v $vprev "${words[cword - 1]}")
>+ [[ -v vwords ]]
>+ upvars+=("$vwords")
>+ upargs+=(-a${#words[@]} $vwords ${words+"${words[@]}"})
>+ (( 4 ))
>+ local cur cword prev words
>+ _upvars -v cur --ign -v cword 1 -v prev grep -a2 words grep --ign
>+ (( 13 ))
>+ (( 13 ))
>+ case $1 in
>+ [[ -n cur ]]
>+ unset -v cur
>+ eval 'cur="$3"'
>++ cur=--ign
>+ shift 3
>+ (( 10 ))
>+ case $1 in
>+ [[ -n cword ]]
>+ unset -v cword
>+ eval 'cword="$3"'
>++ cword=1
>+ shift 3
>+ (( 7 ))
>+ case $1 in
>+ [[ -n prev ]]
>+ unset -v prev
>+ eval 'prev="$3"'
>++ prev=grep
>+ shift 3
>+ (( 4 ))
>+ case $1 in
>+ [[ -n 2 ]]
>+ printf %d 2
>+ [[ -n words ]]
>+ unset -v words
>+ eval 'words=("${@:3:2}")'
>++ words=("${@:3:2}")
>+ shift 4
>+ (( 0 ))
>+ _variables
>+ [[ --ign =~ ^(\$(\{[!#]?)?)([A-Za-z0-9_]*)$ ]]
>+ [[ --ign =~ ^(\$\{[#!]?)([A-Za-z0-9_]*)\[([^]]*)$ ]]
>+ [[ --ign =~ ^\$\{[#!]?[A-Za-z0-9_]*\[.*]$ ]]
>+ case ${prev-} in
>+ return 1
>+ [[ --ign == @(?([0-9])<|?([0-9&])>?(>)|>&)* ]]
>+ [[ grep == @(?([0-9])<|?([0-9&])>?(>)|>&) ]]
>+ local i skip
>+ (( i = 1 ))
>+ (( i < 2 ))
>+ [[ --ign == @(?([0-9])<|?([0-9&])>?(>)|>&)* ]]
>+ (( i++ ))
>+ (( 1 ))
>+ (( i < 2 ))
>+ (( cword <= 0 ))
>+ prev=grep
>+ [[ -n false ]]
>+ _split_longopt
>+ [[ --ign == --?*=* ]]
>+ return 1
>+ return 0
>+ case "${prev,,}" in
>+ false
>+ [[ --ign == -* ]]
>+ COMPREPLY=($(compgen -W "$(LC_ALL=C $1 --help 2>&1 |
>            while read -r line; do
>                [[ $line =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]] &&
>                    printf '%s\n' ${BASH_REMATCH[0]}
>            done)" -- "$cur"))
>+++ LC_ALL=C
>+++ grep --help
>+++ read -r line
>+++ [[ usage: grep [-abcDEFGHhIiLlmnOoPqRSsUVvwxz] [-A num] [-B num] [-C num] =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ read -r line
>+++ [[ [-e pattern] [-f file] [--binary-files=value] [--color=when] =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --binary-files=
>+++ read -r line
>+++ [[ [--context=num] [--directories=action] [--label] [--line-buffered] =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --context=
>+++ read -r line
>+++ [[ [--null] [pattern] [file ...] =~ --[A-Za-z0-9]+([-_][A-Za-z0-9]+)*=? ]]
>+++ printf '%s\n' --null
>+++ read -r line
>++ compgen -W '--binary-files=
>--context=
>--null' -- --ign
>+ [[ '' == *= ]]
>#â	Completion Fails
>#===============================================================#

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Attachments on bug 264592: 234598