Re: Problem completing remotes when .git/remotes exits

2012-09-25 Thread SZEDER Gábor
Hi,


On Wed, Sep 19, 2012 at 09:55:28PM +0200, Johannes Sixt wrote:
> I have an empty .git/remotes directory. Trying to complete the name of
> a remote always reports an error:
> 
> git@master:1023> git fetch ls: invalid option -- ' '
> Try `ls --help' for more information.
> 
> I have these:
> 
>   alias ls='ls $LS_OPTIONS'
> and
>   LS_OPTIONS='-N --color=tty -T 0'
> 
> I instrumented __git_remotes with set -x, which shows:
> 
> git@master:1006> git fetch +++ __gitdir
> +++ '[' -z '' ']'
> +++ '[' -n '' ']'
> +++ '[' -n '' ']'
> +++ '[' -d .git ']'
> +++ echo .git
> ++ local i 'IFS=
> ' d=.git
> ++ test -d .git/remotes
> ++ ls '-N --color=tty -T 0' -1 .git/remotes
> ls: invalid option -- ' '
> Try `ls --help' for more information.
> ...
> 
> Notice that the expansion of $LS_OPTIONS is not split at the blanks,
> obviously, because $IFS does not contain a blank at that moment.
> 
> The patch below helps, but it looks like a work-around rather than a
> solution. Ideas?

I've got two alternative solutions for this issue.

The first one is less intrusive: use the 'command' builtin to tell
the shell to ignore shell functions and aliases and just run the ls
command.

diff --git a/contrib/completion/git-completion.bash
b/contrib/completion/git-completion.bash
index be800e09..bcde9472 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -370,7 +370,7 @@ __git_refs_remotes ()
 __git_remotes ()
 {
local i IFS=$'\n' d="$(__gitdir)"
-   test -d "$d/remotes" && ls -1 "$d/remotes"
+   test -d "$d/remotes" && command ls -1 "$d/remotes"
for i in $(git --git-dir="$d" config --get-regexp 'remote\..*\.url' 
2>/dev/null); do
i="${i#remote.}"
echo "${i/.url*/}"


But then it got me thinking...  Notice how much effort we spend just
to get the list of remotes?  We could just run 'git remote' directly
instead...

diff --git a/contrib/completion/git-completion.bash
b/contrib/completion/git-completion.bash
index be800e09..1daeaccf 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -369,12 +369,8 @@ __git_refs_remotes ()
 
 __git_remotes ()
 {
-   local i IFS=$'\n' d="$(__gitdir)"
-   test -d "$d/remotes" && ls -1 "$d/remotes"
-   for i in $(git --git-dir="$d" config --get-regexp 'remote\..*\.url' 
2>/dev/null); do
-   i="${i#remote.}"
-   echo "${i/.url*/}"
-   done
+   local d="$(__gitdir)"
+   git --git-dir="$d" remote
 }
 
 __git_list_merge_strategies ()


I prefer the second one ;)

Best,
Gábor

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Re: Problem completing remotes when .git/remotes exits

2012-09-25 Thread Junio C Hamano
SZEDER Gábor  writes:

> - test -d "$d/remotes" && ls -1 "$d/remotes"
> + test -d "$d/remotes" && command ls -1 "$d/remotes"

Yuck.  For normal scripts, nobody sane would define "alias" for
non-interactive environments, but because these things work in an
interactive environment, we have to protect ourselves from user
aliases.  Not just "ls", but "test" we see above may misbehave X-<.

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Re: Problem completing remotes when .git/remotes exits

2012-09-25 Thread SZEDER Gábor
On Wed, Sep 26, 2012 at 01:00:45AM +0200, SZEDER Gábor wrote:
> But then it got me thinking...  Notice how much effort we spend just
> to get the list of remotes?  We could just run 'git remote' directly
> instead...

Actually, we can't, because 'git remote' doesn't seem to list remotes
stored under .git/remotes.  Is that intentional?

Anyway, we could still use 'git remote' to replace at least the config
query and the for loop to spare a few lines of code and a subshell.

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Re: Problem completing remotes when .git/remotes exits

2012-09-25 Thread SZEDER Gábor
On Wed, Sep 26, 2012 at 03:09:38AM +0200, SZEDER Gábor wrote:
> On Wed, Sep 26, 2012 at 01:00:45AM +0200, SZEDER Gábor wrote:
> > But then it got me thinking...  Notice how much effort we spend just
> > to get the list of remotes?  We could just run 'git remote' directly
> > instead...
> 
> Actually, we can't, because 'git remote' doesn't seem to list remotes
> stored under .git/remotes.  Is that intentional?

Looks like a bug, as it seems to have been lost in translation in
211c8968 (Make git-remote a builtin, 2008-02-29).

list_remote() in git-remote.perl looks for remotes in config and in
.git/remotes/, too.  The builtin implementation uses
remote.c:for_each_remote() from the start, which only looks at the
config.

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Re: Problem completing remotes when .git/remotes exits

2012-09-26 Thread SZEDER Gábor
On Tue, Sep 25, 2012 at 04:43:59PM -0700, Junio C Hamano wrote:
> SZEDER Gábor  writes:
> 
> > -   test -d "$d/remotes" && ls -1 "$d/remotes"
> > +   test -d "$d/remotes" && command ls -1 "$d/remotes"
> 
> Yuck.  For normal scripts, nobody sane would define "alias" for
> non-interactive environments, but because these things work in an
> interactive environment, we have to protect ourselves from user
> aliases.  Not just "ls", but "test" we see above may misbehave X-<.

Right, however, while ls is frequently aliased (my ubuntu box has
alias ls='ls --color=auto' in /etc/skel/.bashrc by default, but that's
not an issue in this case), I think aliasing test is just crazy.
Yeah, it's possible, but if we go down that route, then we should also
worry about the [ builtin being aliased:

$ if [ -r nonexisting ] ; then echo found ; fi
$ alias [='echo using aliased ['
$ if [ -r nonexisting ] ; then echo found ; fi
using aliased [ -r nonexisting ]
found
$

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