Escape search term before passing it to Regexp.new (!6241)

CHANGELOG

@@ -10,6 +10,7 @@ v 8.12.0 (unreleased)
   - Change logo animation to CSS (ClemMakesApps)
   - Instructions for enabling Git packfile bitmaps !6104
   - Fix pagination on user snippets page
+  - Escape search term before passing it to Regexp.new !6241 (winniehell)
   - Change merge_error column from string to text type
   - Reduce contributions calendar data payload (ClemMakesApps)
   - Add `web_url` field to issue, merge request, and snippet API objects (Ben Boeckel)

app/helpers/search_helper.rb

@@ -7,8 +7,10 @@ module SearchHelper
       projects_autocomplete(term)
     ].flatten
+    search_pattern = Regexp.new(Regexp.escape(term), "i")
+
     generic_results = project_autocomplete + default_autocomplete + help_autocomplete
-    generic_results.select! { |result| result[:label] =~ Regexp.new(term, "i") }
+    generic_results.select! { |result| result[:label] =~ search_pattern }
     [
       resources_results,