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| author | Ted Pavlic <ted@tedpavlic.com> | 2009-01-15 11:02:21 -0500 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2009-01-15 09:33:26 -0800 |
| commit | 25a31f814016891c7728fdebca056ef47ca75547 (patch) | |
| tree | 8bc93c48f7f6a1f51b5ffb8079ae887f978857bf | |
| parent | b32acd21d81ac792cf28d487b960a2f6bb0ef0e2 (diff) | |
| download | git-25a31f814016891c7728fdebca056ef47ca75547.tar.gz git-25a31f814016891c7728fdebca056ef47ca75547.tar.xz | |
bash-completion: Support running when set -u is enabled
Under "set -u" semantics, it is an error to access undefined variables.
Some user environments may enable this setting in the interactive shell.
In any context where the completion functions access an undefined
variable, accessing a default empty string (aka "${1-}" instead of "$1")
is a reasonable way to code the function, as it silences the undefined
variable error while still supplying an empty string.
In this patch, functions that should always take an argument still use
$1. Functions that have optional arguments use ${1-}.
Signed-off-by: Ted Pavlic <ted@tedpavlic.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rwxr-xr-x | contrib/completion/git-completion.bash | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash index 7b074d798..5d1515cec 100755 --- a/contrib/completion/git-completion.bash +++ b/contrib/completion/git-completion.bash @@ -52,7 +52,7 @@ esac __gitdir () { - if [ -z "$1" ]; then + if [ -z "${1-}" ]; then if [ -n "$__git_dir" ]; then echo "$__git_dir" elif [ -d .git ]; then @@ -111,7 +111,7 @@ __git_ps1 () fi fi - if [ -n "$1" ]; then + if [ -n "${1-}" ]; then printf "$1" "${b##refs/heads/}$r" else printf " (%s)" "${b##refs/heads/}$r" @@ -143,8 +143,8 @@ __gitcomp () ;; *) local IFS=$'\n' - COMPREPLY=($(compgen -P "$2" \ - -W "$(__gitcomp_1 "$1" "$4")" \ + COMPREPLY=($(compgen -P "${2-}" \ + -W "$(__gitcomp_1 "${1-}" "${4-}")" \ -- "$cur")) ;; esac @@ -152,13 +152,13 @@ __gitcomp () __git_heads () { - local cmd i is_hash=y dir="$(__gitdir "$1")" + local cmd i is_hash=y dir="$(__gitdir "${1-}")" if [ -d "$dir" ]; then git --git-dir="$dir" for-each-ref --format='%(refname:short)' \ refs/heads return fi - for i in $(git ls-remote "$1" 2>/dev/null); do + for i in $(git ls-remote "${1-}" 2>/dev/null); do case "$is_hash,$i" in y,*) is_hash=n ;; n,*^{}) is_hash=y ;; @@ -170,13 +170,13 @@ __git_heads () __git_tags () { - local cmd i is_hash=y dir="$(__gitdir "$1")" + local cmd i is_hash=y dir="$(__gitdir "${1-}")" if [ -d "$dir" ]; then git --git-dir="$dir" for-each-ref --format='%(refname:short)' \ refs/tags return fi - for i in $(git ls-remote "$1" 2>/dev/null); do + for i in $(git ls-remote "${1-}" 2>/dev/null); do case "$is_hash,$i" in y,*) is_hash=n ;; n,*^{}) is_hash=y ;; @@ -188,7 +188,7 @@ __git_tags () __git_refs () { - local i is_hash=y dir="$(__gitdir "$1")" + local i is_hash=y dir="$(__gitdir "${1-}")" local cur="${COMP_WORDS[COMP_CWORD]}" format refs if [ -d "$dir" ]; then case "$cur" in |