[PATCH] add custom bash completion for extensions

[Lars Flitter]

Bash completion now allows usage of extension commands.

To add extension commands to the list of commands append the PASSWORD_STORE_EXTENSION_COMMANDS variable with a leading space:
PASSWORD_STORE_EXTENSION_COMMANDS=+" COMMAND"

To complete after the command define a function like this:
__password_store_extension_complete_COMMAND() {
    COMPREPLY+=($(compgen -W "-o --option" -- ${cur}))
    _pass_complete_entries 1
}
---
 src/completion/pass.bash-completion | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/completion/pass.bash-completion b/src/completion/pass.bash-completion
index 456485b..c59f558 100644
--- a/src/completion/pass.bash-completion
+++ b/src/completion/pass.bash-completion
@@ -81,8 +81,17 @@ _pass()
 {
 	COMPREPLY=()
 	local cur="${COMP_WORDS[COMP_CWORD]}"
-	local commands="init ls find grep show insert generate edit rm mv cp git help version"
+	local commands="init ls find grep show insert generate edit rm mv cp git help version ${PASSWORD_STORE_EXTENSION_COMMANDS}"
 	if [[ $COMP_CWORD -gt 1 ]]; then
+		# To complete after an extension command define a function like this:
+		# __password_store_extension_complete_<COMMAND>() {
+		#     COMPREPLY+=($(compgen -W "-o --option" -- ${cur}))
+		#     _pass_complete_entries 1
+		# }
+		if type __password_store_extension_complete_${COMP_WORDS[1]} &> /dev/null ;then
+			__password_store_extension_complete_${COMP_WORDS[1]}
+		fi
+
 		local lastarg="${COMP_WORDS[$COMP_CWORD-1]}"
 		case "${COMP_WORDS[1]}" in
 			init)
-- 
2.18.0