[PATCH] git-completion.zsh: define __gitcomp_file compatibility function

[Matthieu Moy <Matthieu.Moy@imag.fr>]

Commit fea16b47b60 (Fri Jan 11 19:48:43 2013, Manlio Perillo,
git-completion.bash: add support for path completion), introduced a new
__gitcomp_file function that uses the bash builtin "compgen". The
function was redefined for ZSH in the deprecated section of
git-completion.bash, but not in the new git-completion.zsh script.

As a result, users of git-completion.zsh trying to complete "git add
fo<tab>" get an error:

git add fo__gitcomp_file:8: command not found: compgen

This patch adds the redefinition and removes the error.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
---
> Felipe, you know ZSH completion much better than me. Could you turn this
> into a real patch?

No response from Felipe, so I'm trying my own patch. Compared to the
snippet I already sent, I added the -f option to "compadd", which was
there in the __gitcomp_file function defined in the deprecated ZSH
compatibility section of the bash script, and gives the ZSH equivalent
for "compopt -o filenames".

This fixes an annoying regression for ZSH users, so it may deserve to
be in the future 1.8.2.

 contrib/completion/git-completion.zsh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/contrib/completion/git-completion.zsh b/contrib/completion/git-completion.zsh
index 4577502..cf8116d 100644
--- a/contrib/completion/git-completion.zsh
+++ b/contrib/completion/git-completion.zsh
@@ -60,6 +60,15 @@ __gitcomp_nl ()
 	compadd -Q -S "${4- }" -p "${2-}" -- ${=1} && _ret=0
 }
 
+__gitcomp_file ()
+{
+	emulate -L zsh
+
+	local IFS=$'\n'
+	compset -P '*[=:]'
+	compadd -Q -p "${2-}" -f -- ${=1} && _ret=0
+}
+
 _git ()
 {
 	local _ret=1
-- 
1.8.1.3.572.g35e1b60