Remove ^ redirection from sample prompts

A bunch of these did ^/dev/null. Replace it with 2>/dev/null.

[ci skip]

share/tools/web_config/sample_prompts/acidhub.fish

@@ -4,10 +4,10 @@
 function fish_prompt -d "Write out the prompt"
     set laststatus $status
     function _git_branch_name
-        echo (git symbolic-ref HEAD ^/dev/null | sed -e 's|^refs/heads/||')
+        echo (git symbolic-ref HEAD 2>/dev/null | sed -e 's|^refs/heads/||')
     end
     function _is_git_dirty
-        echo (git status -s --ignore-submodules=dirty ^/dev/null)
+        echo (git status -s --ignore-submodules=dirty 2>/dev/null)
     end
     if [ (_git_branch_name) ]
         set -l git_branch (set_color -o blue)(_git_branch_name)

share/tools/web_config/sample_prompts/classic_vcs.fish

@@ -12,25 +12,25 @@ function fish_prompt --description 'Write out the prompt'
 
         function __fish_repaint_user --on-variable fish_color_user --description "Event handler, repaint when fish_color_user changes"
             if status --is-interactive
-                commandline -f repaint ^/dev/null
+                commandline -f repaint 2>/dev/null
             end
         end
 
         function __fish_repaint_host --on-variable fish_color_host --description "Event handler, repaint when fish_color_host changes"
             if status --is-interactive
-                commandline -f repaint ^/dev/null
+                commandline -f repaint 2>/dev/null
             end
         end
 
         function __fish_repaint_status --on-variable fish_color_status --description "Event handler; repaint when fish_color_status changes"
             if status --is-interactive
-                commandline -f repaint ^/dev/null
+                commandline -f repaint 2>/dev/null
             end
         end
 
         function __fish_repaint_bind_mode --on-variable fish_key_bindings --description "Event handler; repaint when fish_key_bindings changes"
             if status --is-interactive
-                commandline -f repaint ^/dev/null
+                commandline -f repaint 2>/dev/null
             end
         end
 

share/tools/web_config/sample_prompts/robbyrussell.fish

@@ -7,36 +7,36 @@ function fish_prompt
     if not set -q -g __fish_robbyrussell_functions_defined
         set -g __fish_robbyrussell_functions_defined
         function _git_branch_name
-            set -l branch (git symbolic-ref --quiet HEAD ^/dev/null)
+            set -l branch (git symbolic-ref --quiet HEAD 2>/dev/null)
             if set -q branch[1]
                 echo (string replace -r '^refs/heads/' '' $branch)
             else
-                echo (git rev-parse --short HEAD ^/dev/null)
+                echo (git rev-parse --short HEAD 2>/dev/null)
             end
         end
 
         function _is_git_dirty
-            echo (git status -s --ignore-submodules=dirty ^/dev/null)
+            echo (git status -s --ignore-submodules=dirty 2>/dev/null)
         end
 
         function _is_git_repo
             type -q git
             or return 1
-            git status -s >/dev/null ^/dev/null
+            git status -s >/dev/null 2>/dev/null
         end
 
         function _hg_branch_name
-            echo (hg branch ^/dev/null)
+            echo (hg branch 2>/dev/null)
         end
 
         function _is_hg_dirty
-            echo (hg status -mard ^/dev/null)
+            echo (hg status -mard 2>/dev/null)
         end
 
         function _is_hg_repo
             type -q hg
             or return 1
-            hg summary >/dev/null ^/dev/null
+            hg summary >/dev/null 2>/dev/null
         end
 
         function _repo_branch_name

share/tools/web_config/sample_prompts/sorin.fish

@@ -16,7 +16,7 @@ function fish_right_prompt
     test $status != 0
     and printf (set_color red)"⏎ "
 
-    if git rev-parse ^/dev/null
+    if git rev-parse 2>/dev/null
         # Magenta if branch detached else green
         git branch -qv | grep "\*" | string match -rq detached
         and set_color brmagenta
@@ -26,7 +26,7 @@ function fish_right_prompt
         git name-rev --name-only HEAD
 
         # Merging state
-        git merge -q ^/dev/null
+        git merge -q 2>/dev/null
         or printf ':'(set_color red)'merge'
         printf ' '