[PATCH 3/3] completion: offer ctags symbol names for 'git log -S', '-G' and '-L:'

[SZEDER Gábor]

Just like in the case of search patterns for 'git grep', see 29eec71f2
(completion: match ctags symbol names in grep patterns, 2011-10-21)),
a common thing to look for using 'git log -S', '-G' and '-L:' is the
name of a symbol.

Teach the completion for 'git log' to offer ctags symbol names after
these options, both in stuck and in unstuck forms.

Signed-off-by: SZEDER Gábor <szeder....@gmail.com>
---
 contrib/completion/git-completion.bash | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/contrib/completion/git-completion.bash 
b/contrib/completion/git-completion.bash
index e38178022..48690ad1a 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1687,6 +1687,19 @@ _git_log ()
        if [ -f "$__git_repo_path/MERGE_HEAD" ]; then
                merge="--merge"
        fi
+       case "$prev,$cur" in
+       -L,:*:*)
+               return  # fall back to Bash filename completion
+               ;;
+       -L,:*)
+               __git_complete_symbol --cur="${cur#:}" --sfx=":"
+               return
+               ;;
+       -G,*|-S,*)
+               __git_complete_symbol
+               return
+               ;;
+       esac
        case "$cur" in
        --pretty=*|--format=*)
                __gitcomp "$__git_log_pretty_formats $(__git_pretty_aliases)
@@ -1732,6 +1745,21 @@ _git_log ()
                        "
                return
                ;;
+       -L:*:*)
+               return  # fall back to Bash filename completion
+               ;;
+       -L:*)
+               __git_complete_symbol --cur="${cur#-L:}" --sfx=":"
+               return
+               ;;
+       -G*)
+               __git_complete_symbol --pfx="-G" --cur="${cur#-G}"
+               return
+               ;;
+       -S*)
+               __git_complete_symbol --pfx="-S" --cur="${cur#-S}"
+               return
+               ;;
        esac
        __git_complete_revlist
 }
-- 
2.12.1.498.gded7ead47