Lua: template.define_slash_command

plugs/core/Library/Std/Template.md

@@ -33,4 +33,29 @@ function template.new(template_str)
     return space_lua.interpolate(template_str, obj)
   end
 end
+
+-- Creates a template-based slash command, keys for def are:
+--   name: name of the slash command
+--   description: description of the slash command
+--   only_contexts: parent AST nodes in which this slash command is available, defaults to everywhere
+--   except_contexts: parent AST nodes in which this slash command is not available
+--   template: template function to apply
+--   insert_at: position to insert the template into
+--   match: match string to apply the template to
+--   match_regex: match regex to apply the template to
+function template.define_slash_command(def)
+  slash_command.define {
+    name = def.name,
+    description = def.description,
+    onlyContexts = def.only_contexts,
+    exceptContexts = def.except_contexts,
+    run = function()
+      system.invoke_function("template.applySnippetTemplate", def.template(), {
+        insertAt = def.insert_at,
+        match = def.match,
+        matchRegex = def.match_regex
+      })
+    end
+  }
+end
 ```