[PATCH 4/5] completion: zsh: improve main function selection

Sometimes we want to use the function directly (e.g. _git_checkout), for
example when zsh has the option 'complete_aliases', this way, we can do
something like:

  compdef _git gco=git_checkout

Signed-off-by: Felipe Contreras <redacted>
---
 contrib/completion/git-completion.zsh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/contrib/completion/git-completion.zsh b/contrib/completion/git-completion.zsh
index 58b3b5c27d..92b956d5de 100644
--- a/contrib/completion/git-completion.zsh
+++ b/contrib/completion/git-completion.zsh

@@ -227,8 +227,10 @@ _git ()
 
 	if (( $+functions[__${service}_zsh_main] )); then
 		__${service}_zsh_main
-	else
+	elif (( $+functions[__${service}_main] )); then
 		emulate ksh -c __${service}_main
+	elif (( $+functions[_${service}] )); then
+		emulate ksh -c _${service}
 	fi
 
 	let _ret && _default && _ret=0

-- 
2.22.0.rc2.dirty