Fix case matching literal ?

Fixes #4896.

share/completions/git.fish

@@ -125,6 +125,9 @@ function __fish_git_files
         # A " " means it's unmodified.
         #
         # Be careful about the ordering here!
+        #
+        # HACK: To allow this to work both with and without '?' globs
+        set -l dq '??'
         switch "$stat"
             case DD AU UD UA DU AA UU
                 # Unmerged
@@ -166,7 +169,7 @@ function __fish_git_files
                 # For our purposes, we assume this is a staged deletion.
                 contains -- deleted-staged $argv; or contains -- all-staged $argv
                 and printf '%s\t%s\n' "$file" $staged_deleted_desc
-            case '\?\?'
+            case "$dq" # a literal '??'
                 # Untracked
                 contains -- untracked $argv
                 and printf '%s\t%s\n' "$file" $untracked_desc

share/functions/__fish_hg_prompt.fish

@@ -68,6 +68,8 @@ function __fish_hg_prompt --description 'Write out the hg prompt'
         for line in $repo_status
 
             # Add a character for each file status if we have one
+            # HACK: To allow this to work both with and without '?' globs
+            set -l q '?'
             switch $line
                 case 'A '
                     set -a hg_statuses added
@@ -77,7 +79,7 @@ function __fish_hg_prompt --description 'Write out the hg prompt'
                     set -a hg_statuses copied
                 case 'D ' ' D'
                     set -a hg_statuses deleted
-                case '\? '
+                case "$dq "
                     set -a hg_statuses untracked
                 case 'U*' '*U' 'DD' 'AA'
                     set -a hg_statuses unmerged

share/functions/__terlar_git_prompt.fish

@@ -50,6 +50,8 @@ function __terlar_git_prompt --description 'Write out the git prompt'
             set staged 1
         end
 
+        # HACK: To allow matching a literal `??` both with and without `?` globs.
+        set -l dq '??'
         switch $i
             case 'A '
                 set -a gs added
@@ -61,7 +63,7 @@ function __terlar_git_prompt --description 'Write out the git prompt'
                 set -a gs copied
             case 'D ' ' D'
                 set -a gs deleted
-            case '\?\?'
+            case "$dq"
                 set -a gs untracked
             case 'U*' '*U' 'DD' 'AA'
                 set -a gs unmerged