From a4a28c779e04b0976f26c5c72c2aa0310aea8c67 Mon Sep 17 00:00:00 2001
From: jesopo
Date: Thu, 27 Feb 2020 18:03:21 +0000
Subject: show usage strings when spec parsing fails

---
 src/core_modules/command_spec/__init__.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'src/core_modules/command_spec')

diff --git a/src/core_modules/command_spec/__init__.py b/src/core_modules/command_spec/__init__.py
index 196afbd6..1fdd02a9 100644
--- a/src/core_modules/command_spec/__init__.py
+++ b/src/core_modules/command_spec/__init__.py
@@ -133,4 +133,16 @@ class Module(ModuleManager.BaseModule):
                     if count >= best_count:
                         overall_error = current_error
 
-            return utils.consts.PERMISSION_HARD_FAIL, overall_error
+            error_out = overall_error
+
+            if event["is_channel"]:
+                context = utils.parse.SpecArgumentContext.CHANNEL
+            else:
+                context = utils.parse.SpecArgumentContext.PRIVATE
+            usages = " | ".join(
+                [utils.parse.argument_spec_human(s, context) for s in specs])
+
+            command = "%s%s" % (event["command_prefix"], event["command"])
+            error_out = "%s (Usage: %s)" % (overall_error, usages)
+
+            return utils.consts.PERMISSION_HARD_FAIL, error_out
-- 
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