[PATCHv2 13/21] completion: don't offer commands when 'git --opt' needs an argument

[SZEDER Gábor]

The main git options '--git-dir', '-c', '-C', '--worktree' and
'--namespace' require an argument, but attempting completion right
after them lists git commands.

Don't offer anything right after these options, thus let Bash fall
back to filename completion, because

  - the three options '--git-dir', '-C' and '--worktree' do actually
    require a path argument, and

  - we don't complete the required argument of '-c' and '--namespace',
    and in that case the "standard" behavior of our completion script
    is to not offer anything, but fall back to filename completion.

Signed-off-by: SZEDER Gábor <szeder....@gmail.com>
---
 contrib/completion/git-completion.bash | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/contrib/completion/git-completion.bash 
b/contrib/completion/git-completion.bash
index 4ded44977..7d25b33b8 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2808,6 +2808,17 @@ __git_main ()
        done
 
        if [ -z "$command" ]; then
+               case "$prev" in
+               --git-dir|-C|--work-tree)
+                       # these need a path argument, let's fall back to
+                       # Bash filename completion
+                       return
+                       ;;
+               -c|--namespace)
+                       # we don't support completing these options' arguments
+                       return
+                       ;;
+               esac
                case "$cur" in
                --*)   __gitcomp "
                        --paginate
-- 
2.11.0.555.g967c1bcb3