From 838682663a84a4d55ab145c312bad5355022432e Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Mon, 14 Sep 2015 17:43:27 +0200
Subject: Add callback helper for builtins

---
 nix-script-repl.sh | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/nix-script-repl.sh b/nix-script-repl.sh
index 21252d5..2582450 100755
--- a/nix-script-repl.sh
+++ b/nix-script-repl.sh
@@ -66,12 +66,27 @@ __list() {
     caller_util_list_subcommands_for "nix-script"
 }
 
+__builtin__() {
+    local str=$1; shift
+    local cmd=$1; shift
+    local args=$*
+
+    if [[ $COMMAND =~ $str ]]
+    then
+        $cmd $args && prompt
+        return 1
+    else
+        return 0
+    fi
+}
+
 prompt
 while read COMMAND ARGS
 do
     [[ $COMMAND =~ "quit" || $COMMAND =~ "exit" ]] && break
-    [[ $COMMAND =~ "help" ]] && usage  && prompt && continue
-    [[ $COMMAND =~ "list" ]] && __list && prompt && continue
+
+    __builtin__ "help" usage $ARGS   || continue
+    __builtin__ "list" __list $ARGS  || continue
 
     dbg "Got '$COMMAND' with args '$ARGS'"
     stdout "Searching for script for '$COMMAND'"
-- 
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