Re: Help creating git alias
On Thu, Oct 31, 2013 at 11:36:59AM -0400, Eugene Sajine wrote:
Show 63 quoted lines
> On Wed, Oct 30, 2013 at 11:54 PM, Junio C Hamano <gitster@pobox.com> wrote:
> > Eugene Sajine <euguess@gmail.com> writes:
> >
> >> That was my initial intention, because I would like to be able to pass
> >> parameters like to git log or git blame correctly without the explicit
> >> use of $1. Could you please advise about how to make it work with the
> >> !sh -c ?
> >>
> >> Because the same exact (sed 's/@\\S*//') syntax didn't work with "sh -c".
> >
> > You can make it work if you think step-by-step. First, this is what
> > you want to run:
> >
> > sh -c 'git log --format="..." "$@" | sed "s/@\S*//"' -
> >
> > so that "git euguess master..next" would turn into
> >
> > sh -c 'git log --format="..." "$@" | sed "s/@\S*//"' - master..next
> >
> > Now, you want to wrap it into an alias, i.e.
> >
> > [alias]
> > euguess = "!sh -c ..."
> >
> > That ... part is read by our configuration reader, so you need to
> > quote the double quotes and backslashes with backslash, which would
> > give you something like:
> >
> > [alias]
> > euguess = "!sh -c 'git log --format=\"%h %ae %s\" --date=short \"$@\" | sed \"s/@\\S*//\"' -"
> >
> >
>
> Junio,
>
> Thanks for taking the time - I appreciate that a lot.
> It does work properly now except there is some difference between the
> required pathnames:
>
> when i'm in a subfolder in git repo i can say
>
> git log filename
>
> But it seems that if the alias is used i need to specify full path
> from the root of the repo no matter where i am.
>
> git log a/b/c/filename
>
> the difference is obviously in the working directory
>
> when i add an alias:
>
> pd = "!sh -c 'pwd'"
>
> i get this:
>
> $ git pd
> /home/users/euguess/repo
>
> $ pwd
> /home/users/euguess/repo/a/b/c
>
> Is there any way to help that situation?
Here's the relevant details from Documentation/config.txt:
""" If the alias expansion is prefixed with an exclamation point, it will be treated as a shell command. For example, defining "alias.new = !gitk --all --not ORIG_HEAD", the invocation "git new" is equivalent to running the shell command "gitk --all --not ORIG_HEAD". Note that shell commands will be executed from the top-level directory of a repository, which may not necessarily be the current directory.
'GIT_PREFIX' is set as returned by running 'git rev-parse --show-prefix' from the original current directory. See linkgit:git-rev-parse[1]. """
The $GIT_PREFIX variable should be available to the alias; it is a path relative to the root which corresponds to the current directory.
That doesn't quite play well with these aliases because they use "$@", though.
One way to do it is to add another layer of indirection. Maybe someone else on this list has a better suggestion, but this should do the trick...
Create a shell script to contain your alias, and then point your alias at it. e.g.
[alias]
example = "!/path/to/alias-script \"$@\""
and then the script can look like:
#!/bin/sh
unset CDPATH
if test -n "$GIT_PREFIX"
then
cd "$GIT_PREFIX"
fi
git log --format='%h %ae %s' --date=short "$@" | sed 's/@\\S*//'
...or something like that. I hope that helps. I'm also curious if there's a way to avoid needing the extra script...
...
A-ha.. I think adding the chdir to alias is possible using a function.
[alias]
example = "!f() { cd \"${GIT_PREFIX:-.}\" && git log \"$@\"; }; f"Does that work for you? I hope that helps.
cheers,
--
David
