[PATCH] bash completion: Add completion for 'git help'

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Renamed cached __git_commandlist to __git_porcelain_commandlist
and added __git_all_commandlist that only filters out *--* helpers.
Completions for 'git help' will use the __git_all_commandlist, while
__git_porcelain_commandlist is used for git command completion.
Users who actually read man pages may want to see help for plumbing
commands.

Options added: --all --info --man --web

Signed-off-by: Lee Marlow <lee.marlow@xxxxxxxxx>
---
This version fixes a small error in the __git_all_commands

 contrib/completion/git-completion.bash |   46 +++++++++++++++++++++++++++-----
 1 files changed, 39 insertions(+), 7 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 2edb341..f3bdea4 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -349,10 +349,10 @@ __git_complete_revlist ()
 	esac
 }
 
-__git_commands ()
+__git_all_commands ()
 {
-	if [ -n "$__git_commandlist" ]; then
-		echo "$__git_commandlist"
+	if [ -n "$__git_all_commandlist" ]; then
+		echo "$__git_all_commandlist"
 		return
 	fi
 	local i IFS=" "$'\n'
@@ -360,6 +360,24 @@ __git_commands ()
 	do
 		case $i in
 		*--*)             : helper pattern;;
+		*) echo $i;;
+		esac
+	done
+}
+__git_all_commandlist=
+__git_all_commandlist="$(__git_all_commands 2>/dev/null)"
+
+__git_porcelain_commands ()
+{
+	if [ -n "$__git_porcelain_commandlist" ]; then
+		echo "$__git_porcelain_commandlist"
+		return
+	fi
+	local i IFS=" "$'\n'
+	for i in "help" $(__git_all_commands)
+	do
+		case $i in
+		*--*)             : helper pattern;;
 		applymbox)        : ask gittus;;
 		applypatch)       : ask gittus;;
 		archimport)       : import;;
@@ -427,8 +445,8 @@ __git_commands ()
 		esac
 	done
 }
-__git_commandlist=
-__git_commandlist="$(__git_commands 2>/dev/null)"
+__git_porcelain_commandlist=
+__git_porcelain_commandlist="$(__git_porcelain_commands 2>/dev/null)"
 
 __git_aliases ()
 {
@@ -767,6 +785,18 @@ _git_gc ()
 	COMPREPLY=()
 }
 
+_git_help ()
+{
+	local cur="${COMP_WORDS[COMP_CWORD]}"
+	case "$cur" in
+	--*)
+		__gitcomp "--all --info --man --web"
+		return
+		;;
+	esac
+	__gitcomp "$(__git_all_commands)"
+}
+
 _git_ls_remote ()
 {
 	__gitcomp "$(__git_remotes)"
@@ -1369,7 +1399,8 @@ _git ()
 		case "$i" in
 		--git-dir=*) __git_dir="${i#--git-dir=}" ;;
 		--bare)      __git_dir="." ;;
-		--version|--help|-p|--paginate) ;;
+		--version|-p|--paginate) ;;
+		--help) command="help"; break ;;
 		*) command="$i"; break ;;
 		esac
 		c=$((++c))
@@ -1389,7 +1420,7 @@ _git ()
 			--help
 			"
 			;;
-		*)     __gitcomp "$(__git_commands) $(__git_aliases)" ;;
+		*)     __gitcomp "$(__git_porcelain_commands) $(__git_aliases)" ;;
 		esac
 		return
 	fi
@@ -1414,6 +1445,7 @@ _git ()
 	fetch)       _git_fetch ;;
 	format-patch) _git_format_patch ;;
 	gc)          _git_gc ;;
+	help)        _git_help ;;
 	log)         _git_log ;;
 	ls-remote)   _git_ls_remote ;;
 	ls-tree)     _git_ls_tree ;;
-- 
1.6.0.rc0.14.g95f8

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