From cf0ff02a38b5b97091301224475d81923f3c298f Mon Sep 17 00:00:00 2001 From: Felipe Contreras Date: Thu, 2 Feb 2012 11:26:15 -0800 Subject: [PATCH] completion: work around zsh option propagation bug When listing commands in zsh (git ), all of them will show up, instead of only porcelain ones. The root cause of this is because zsh versions from 4.3.0 to present (4.3.15) do not correctly propagate the SH_WORD_SPLIT option into the subshell in ${foo:=$(bar)} expressions. Because of this bug, the list of all commands was treated as a single word in __git_list_porcelain_commands and did not match any of the patterns that would usually cause plumbing to be excluded. With problematic versions of zsh, after running emulate sh fn () { var='one two' for v in $var; do echo $v; done } x=$(fn) : ${y=$(fn)} printing "$x" results in two lines as expected, but printing "$y" results in a single line because $var is expanded as a single word when evaluating fn to compute y. So avoid the construct, and use an explicit 'test -n "$foo" || foo=$(bar)' instead. [jn: clarified commit message, indentation style fix] Signed-off-by: Felipe Contreras Signed-off-by: Jonathan Nieder Signed-off-by: Junio C Hamano --- contrib/completion/git-completion.bash | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash index 1496c6dc0..c63616608 100755 --- a/contrib/completion/git-completion.bash +++ b/contrib/completion/git-completion.bash @@ -676,7 +676,8 @@ __git_merge_strategies= # is needed. __git_compute_merge_strategies () { - : ${__git_merge_strategies:=$(__git_list_merge_strategies)} + test -n "$__git_merge_strategies" || + __git_merge_strategies=$(__git_list_merge_strategies) } __git_complete_revlist_file () @@ -854,7 +855,8 @@ __git_list_all_commands () __git_all_commands= __git_compute_all_commands () { - : ${__git_all_commands:=$(__git_list_all_commands)} + test -n "$__git_all_commands" || + __git_all_commands=$(__git_list_all_commands) } __git_list_porcelain_commands () @@ -947,7 +949,8 @@ __git_porcelain_commands= __git_compute_porcelain_commands () { __git_compute_all_commands - : ${__git_porcelain_commands:=$(__git_list_porcelain_commands)} + test -n "$__git_porcelain_commands" || + __git_porcelain_commands=$(__git_list_porcelain_commands) } __git_pretty_aliases () -- 2.30.2