Hey there. I think I found another case of an unbound variable: Completing e.g.: git commit --[press TAB] gives: $ git commit --bash: GIT_COMPLETION_SHOW_ALL: unbound variable with some debugging: $ set -xv $ git commit --+ __git_func_wrap __git_main + local cur words cword prev + _get_comp_words_by_ref -n =: cur words cword prev + 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 words cword prev + case $flag in + exclude==: + getopts c:i:n:p:w: flag -n =: cur words cword prev + [[ 6 -ge 3 ]] + case ${!OPTIND} in + vcur=cur + (( OPTIND += 1 )) + [[ 6 -ge 4 ]] + case ${!OPTIND} in + vwords=words + (( OPTIND += 1 )) + [[ 6 -ge 5 ]] + case ${!OPTIND} in + vcword=cword + (( OPTIND += 1 )) + [[ 6 -ge 6 ]] + case ${!OPTIND} in + vprev=prev + (( 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 2 + [[ -v exclude ]] + line='git commit --' + (( i = 0, j = 0 )) + (( i < 3 )) + [[ 0 -gt 0 ]] + ref='words[0]' + printf -v 'words[0]' %s git + line=' commit --' + (( i == COMP_CWORD )) + (( i++, j++ )) + (( i < 3 )) + [[ 1 -gt 0 ]] + [[ commit == +([=:]) ]] + ref='words[1]' + printf -v 'words[1]' %s commit + line=' --' + (( i == COMP_CWORD )) + (( i++, j++ )) + (( i < 3 )) + [[ 2 -gt 0 ]] + [[ -- == +([=:]) ]] + ref='words[2]' + printf -v 'words[2]' %s -- + line= + (( i == COMP_CWORD )) + printf -v cword %s 2 + (( i++, j++ )) + (( i < 3 )) + (( i == COMP_CWORD )) + local i cur= index=13 'lead=git commit --' + [[ 13 -gt 0 ]] + [[ -n git commit -- ]] + [[ -n gitcommit-- ]] + cur='git commit --' + (( i = 0 )) + (( i <= cword )) + [[ 13 -ge 3 ]] + [[ git != \g\i\t ]] + (( i < cword )) + local old_size=13 + cur=' commit --' + local new_size=10 + (( index -= old_size - new_size )) + (( ++i )) + (( i <= cword )) + [[ 10 -ge 6 ]] + [[ commi != \c\o\m\m\i\t ]] + cur='commit --' + (( index > 0 )) + (( index-- )) + [[ 9 -ge 6 ]] + [[ commit != \c\o\m\m\i\t ]] + (( i < cword )) + local old_size=9 + cur=' --' + local new_size=3 + (( index -= old_size - new_size )) + (( ++i )) + (( i <= cword )) + [[ 3 -ge 2 ]] + [[ - != \-\- ]] + cur=-- + (( index > 0 )) + (( index-- )) + [[ 2 -ge 2 ]] + [[ -- != \-\- ]] + (( i < cword )) + (( ++i )) + (( i <= cword )) + [[ -n -- ]] + [[ ! -n -- ]] + (( index < 0 )) + local words cword cur + _upvars -a3 words git commit -- -v cword 2 -v cur -- + (( 11 )) + (( 11 )) + case $1 in + [[ -n 3 ]] + printf %d 3 + [[ -n words ]] + unset -v words + eval 'words=("${@:3:3}")' words=("${@:3:3}") ++ words=("${@:3:3}") + shift 5 + (( 6 )) + case $1 in + [[ -n cword ]] + unset -v cword + eval 'cword="$3"' cword="$3" ++ cword=2 + shift 3 + (( 3 )) + case $1 in + [[ -n cur ]] + unset -v cur + eval 'cur="$3"' cur="$3" ++ cur=-- + shift 3 + (( 0 )) + [[ -v vcur ]] + upvars+=("$vcur") + upargs+=(-v $vcur "$cur") + [[ -v vcword ]] + upvars+=("$vcword") + upargs+=(-v $vcword "$cword") + [[ -v vprev ]] + [[ 2 -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 -- -v cword 2 -v prev commit -a3 words git commit -- + (( 14 )) + (( 14 )) + case $1 in + [[ -n cur ]] + unset -v cur + eval 'cur="$3"' cur="$3" ++ cur=-- + shift 3 + (( 11 )) + case $1 in + [[ -n cword ]] + unset -v cword + eval 'cword="$3"' cword="$3" ++ cword=2 + shift 3 + (( 8 )) + case $1 in + [[ -n prev ]] + unset -v prev + eval 'prev="$3"' prev="$3" ++ prev=commit + shift 3 + (( 5 )) + case $1 in + [[ -n 3 ]] + printf %d 3 + [[ -n words ]] + unset -v words + eval 'words=("${@:3:3}")' words=("${@:3:3}") ++ words=("${@:3:3}") + shift 5 + (( 0 )) + __git_main + local i c=1 command __git_dir __git_repo_path + local __git_C_args C_args_count=0 + '[' 1 -lt 2 ']' + i=commit + case "$i" in + command=commit + break + '[' -z commit ']' + __git_complete_command commit + local command=commit + local completion_func=_git_commit + __git_have_func _git_commit + declare -f -- _git_commit + __git_have_func _git_commit + declare -f -- _git_commit + _git_commit + case "$prev" in + case "$cur" in + __gitcomp_builtin commit + local cmd=commit + local incl= + local excl= + local var=__gitcomp_builtin_commit + local options + eval 'options=${__gitcomp_builtin_commit-}' options=${__gitcomp_builtin_commit-} ++ options= + '[' -z '' ']' + local completion_helper bash: GIT_COMPLETION_SHOW_ALL: unbound variable These seem to be in: /usr/share/bash-completion/completions/git and possibly also: /usr/share/bash-completion/completions/gitk Cheers, Chris.