search: let wildcard searches match up to 100 tags.

Let searching for things like *_legwear match up to 100 tags. Previously
the limit was 25.

app/logical/post_query_builder.rb

@@ -3,6 +3,9 @@ require "strscan"
 class PostQueryBuilder
   extend Memoist
 
+  # How many tags a `blah*` search should match.
+  MAX_WILDCARD_TAGS = 100
+
   COUNT_METATAGS = %w[
     comment_count deleted_comment_count active_comment_count
     note_count deleted_note_count active_note_count
@@ -77,9 +80,9 @@ class PostQueryBuilder
     optional_tags = optional_tags.map(&:name)
     required_tags = required_tags.map(&:name)
 
-    negated_tags += negated_wildcard_tags.flat_map { |tag| Tag.wildcard_matches(tag.name) }
+    negated_tags += negated_wildcard_tags.flat_map { |tag| Tag.wildcard_matches(tag.name).limit(MAX_WILDCARD_TAGS).pluck(:name) }
-    optional_tags += optional_wildcard_tags.flat_map { |tag| Tag.wildcard_matches(tag.name) }
+    optional_tags += optional_wildcard_tags.flat_map { |tag| Tag.wildcard_matches(tag.name).limit(MAX_WILDCARD_TAGS).pluck(:name) }
-    optional_tags += required_wildcard_tags.flat_map { |tag| Tag.wildcard_matches(tag.name) }
+    optional_tags += required_wildcard_tags.flat_map { |tag| Tag.wildcard_matches(tag.name).limit(MAX_WILDCARD_TAGS).pluck(:name) }
 
     tsquery << "!(#{negated_tags.sort.uniq.map(&:to_escaped_for_tsquery).join(" | ")})" if negated_tags.present?
     tsquery << "(#{optional_tags.sort.uniq.map(&:to_escaped_for_tsquery).join(" | ")})" if optional_tags.present?

app/logical/post_sets/post.rb

@@ -187,16 +187,19 @@ module PostSets
         RelatedTagCalculator.frequent_tags_for_post_array(posts).take(MAX_SIDEBAR_TAGS)
       end
 
+      # Wildcard searches can show up to 100 tags in the sidebar, not 25,
+      # because that's how many tags the search itself will use.
       def wildcard_tags
-        Tag.wildcard_matches(tag_string)
+        Tag.wildcard_matches(tag_string).limit(PostQueryBuilder::MAX_WILDCARD_TAGS).pluck(:name)
       end
 
       def saved_search_tags
-        ["search:all"] + SavedSearch.labels_for(CurrentUser.user.id).map {|x| "search:#{x}"}
+        searches = ["search:all"] + SavedSearch.labels_for(CurrentUser.user.id).map {|x| "search:#{x}"}
+        searches.take(MAX_SIDEBAR_TAGS)
       end
 
       def tag_set_presenter
-        @tag_set_presenter ||= TagSetPresenter.new(related_tags.take(MAX_SIDEBAR_TAGS))
+        @tag_set_presenter ||= TagSetPresenter.new(related_tags)
       end
 
       def tag_list_html(**options)

app/models/tag.rb

@@ -249,8 +249,8 @@ class Tag < ApplicationRecord
       name_matches(name).or(alias_matches(name))
     end
 
-    def wildcard_matches(tag, limit: 25)
+    def wildcard_matches(tag)
-      nonempty.name_matches(tag).order(post_count: :desc, name: :asc).limit(limit).pluck(:name)
+      nonempty.name_matches(tag).order(post_count: :desc, name: :asc)
     end
 
     def abbreviation_matches(abbrev)