Subject: Re: [PATCH v2 4/4] completion: improve 'git --exec-path' completion

From: Jonathan Nieder <[email-masked]>
Date: Fri, 13 Apr 2012 13:04:36 -0500

On Fri, Apr 13, 2012 at 01:08:45AM -0500, Jonathan Nieder wrote:
> Felipe Contreras wrote:

>> +++ b/contrib/completion/git-completion.bash
>> @@ -2638,7 +2638,7 @@ _git ()
>>  			--git-dir=
>>  			--bare
>>  			--version
>> -			--exec-path
>> +			--exec-path=
[...]
> Thanks.
>
> "git --exec-path" means to print the name of the directory where git
> stores its subcommands and other helpers.  I have no thoughts either
> way about whether a user typing
>
> 	git --exec-p<TAB>
>
> is more likely to be asking for the current exec-path or intending to
> override it.

In other words, how about something like this?  Tests left as an exercise
to the interested reader.

-- >8 --
Subject: completion: do not add trailing space when completing --exec-path

--exec-path looks like to the completion script like an unambiguous
successful completion script, but it is wrong.  The user could be
trying to do

	git --exec-path; # print name of helper directory

or

	git --exec-path=/path/to/alternative/helper/dir <subcommand>

so the most helpful thing to do is to leave out the trailing space and
leave it to the operator to type an equal sign or carriage return
according to the situation.

Reported-by: Felipe Contreras <[email-masked]>
Signed-off-by: Jonathan Nieder <[email-masked]>
---
 contrib/completion/git-completion.bash |   14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 31f714da..ecbf2172 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -307,12 +307,14 @@ __git_ps1 ()
 # __gitcomp_1 requires 2 arguments
 __gitcomp_1 ()
 {
-	local c IFS=' '$'\t'$'\n'
+	local c word IFS=' '$'\t'$'\n'
 	for c in $1; do
-		case "$c$2" in
-		--*=*) printf %s$'\n' "$c$2" ;;
-		*.)    printf %s$'\n' "$c$2" ;;
-		*)     printf %s$'\n' "$c$2 " ;;
+		word=$c$2
+		case $word in
+		--*=*) printf %s$'\n' "$word" ;;
+		*.)    printf %s$'\n' "$word" ;;
+		*\$)   printf %s$'\n' "${word%\$}" ;;
+		*)     printf %s$'\n' "$word " ;;
 		esac
 	done
 }
@@ -2638,7 +2640,7 @@ _git ()
 			--git-dir=
 			--bare
 			--version
-			--exec-path
+			--exec-path\$
 			--html-path
 			--work-tree=
 			--namespace=
-- 
1.7.10