TicketStencilPlugin doesn't work if ticket types contain uppercase letters

[khym@…]

I installed the TicketStencilPlugin on Trac 1.5.4 and Python 3.11, ran trac-admin deploy to install the .js file, and created a TicketStencilBug wiki page, but it didn't populate the ticket description for me. Looking at the source of the newticket page, I saw:

var _tracticketstencil={"_ticketstencil_default_type":"","bug":"","enhancement":"","task":""};

So it was finding my ticket types, but not getting the stencil for any of them. Looking into it further, I found that the problem is that it sets the stencils, then in another loop, ends up clearing all of them. The all_types list has the ticket types in the original case, but the ticket_type variable is all lowercase. If a ticket type has uppercase letters, all_types.remove(ticket_type) will throw a ValueError('list.remove(x): x not in list') because of the case mismatch. Then when it later does "Set defaults for remaining ticket types", all_types will still contain all of the ticket types, and the stencils for all types will be set to the empty string.

Patch:

ticketstencil.py

@@ -43 +43 @@
         all_types = [enum.name for enum in Type.select(self.env)]
         for name in self.wiki_system.get_pages('TicketStencil'):
             page = WikiPage(env = self.env, name = name)
-            ticket_type = name[prefix_len:].lower()
-            stencils[ticket_type] = page.text
+            ticket_type = name[prefix_len:]
+            stencils[ticket_type.lower()] = page.text
             try:
                 all_types.remove(ticket_type)
             except ValueError: