Merge branch '48528-fix-mr-autocompletion' into 'master'

Resolve "`!` autocomplete does not work anymore"

Closes #48528

See merge request gitlab-org/gitlab-ce!20204

app/helpers/application_helper.rb

@@ -270,7 +270,7 @@ module ApplicationHelper
     {
       members: members_project_autocomplete_sources_path(object, type: noteable_type, type_id: params[:id]),
       issues: issues_project_autocomplete_sources_path(object),
-      merge_requests: merge_requests_project_autocomplete_sources_path(object),
+      mergeRequests: merge_requests_project_autocomplete_sources_path(object),
       labels: labels_project_autocomplete_sources_path(object, type: noteable_type, type_id: params[:id]),
       milestones: milestones_project_autocomplete_sources_path(object),
       commands: commands_project_autocomplete_sources_path(object, type: noteable_type, type_id: params[:id])

changelogs/unreleased/48528-fix-mr-autocompletion.yml

+---
+title: Fix broken '!' support to autocomplete MRs in GFM fields
+merge_request: 20204
+author:
+type: fixed

spec/helpers/application_helper_spec.rb

@@ -157,7 +157,7 @@ describe ApplicationHelper do
     let(:noteable_type) { Issue }
     it 'returns paths for autocomplete_sources_controller' do
       sources = helper.autocomplete_data_sources(project, noteable_type)
-      expect(sources.keys).to match_array([:members, :issues, :merge_requests, :labels, :milestones, :commands])
+      expect(sources.keys).to match_array([:members, :issues, :mergeRequests, :labels, :milestones, :commands])
       sources.keys.each do |key|
         expect(sources[key]).not_to be_nil
       end