[PATCH] completion: fix completion after 'git --option <TAB>'

["SZEDER Gábor" <szeder@ira.uka.de>]

Git's bash completion currently doesn't work when certain git options
are specified, e.g. 'git --no-pager <TAB>' errors out with "error:
invalid key: alias.--no-pager".

The main _git() completion function finds out the git command name by
looping through all the words on the command line and searching for
the first word that is not a known option for the git command.
Unfortunately the list of known git options was not updated in a long
time, and newer options are not skipped but mistaken for a git
command.  Such a misrecognized "command" is then passed to
__git_aliased_command(), which in turn passes it to a 'git config'
query, hence the error.

Currently the following options are misrecognized for a git command:

  -c --no-pager --exec-path --html-path --man-path --info-path
  --no-replace-objects --work-tree= --namespace=

To fix this we could just update the list of options to be skipped,
but the same issue will likely arise, if the git command learns a new
option in the future.  Therefore, to make it more future proof against
new options, this patch changes that loop to skip all option-looking
words, i.e. words starting with a dash.

We also have to handle the '-c' option specially, because it takes a
configutation parameter in a separate word, which must be skipped,
too.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
---
 contrib/completion/git-completion.bash |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 8648a36..8b0c695 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2622,8 +2622,9 @@ _git ()
 		case "$i" in
 		--git-dir=*) __git_dir="${i#--git-dir=}" ;;
 		--bare)      __git_dir="." ;;
-		--version|-p|--paginate) ;;
 		--help) command="help"; break ;;
+		-c) c=$((++c)) ;;
+		-*) ;;
 		*) command="$i"; break ;;
 		esac
 		c=$((++c))
-- 
1.7.6.596.gedbca