Enable hiding default branch names other than 'master'

fish_prompt.fish

@@ -82,6 +82,10 @@ function __bobthefish_git_branch -S -d 'Get the current git branch (or commitish
         and echo $branch_glyph
         and return
 
+        [ "$theme_display_git_default_branch" != 'yes' -a "$ref" = "refs/heads/$theme_git_default_branch" ]
+        and echo $branch_glyph
+        and return
+
         # truncate the middle of the branch name, but only if it's 25+ characters
         set -l truncname $ref
         [ "$theme_use_abbreviated_branch_name" = 'yes' ]