Shorten default title

This now skips the "fish" bit and uses prompt_pwd to print a shorter title.

See #8641.

CHANGELOG.rst

@@ -115,6 +115,7 @@ Interactive improvements
 - The clipboard bindings ignore X-based clipboard programs if the ``DISPLAY`` environment variable is not set, which helps prefer the Windows clipboard when it is available (such as on WSL).
 - ``funcsave`` will remove a saved copy of a function that has been erased with ``functions --erase``.
 - The Web-based configuration tool gained a number of improvements, including the ability to set pager colors.
+- The default ``fish_title`` prints a shorter title with shortened $PWD and no more redundant "fish" (:issue:`8641`).
 
 New or improved bindings
 ^^^^^^^^^^^^^^^^^^^^^^^^

share/functions/fish_title.fish

@@ -3,6 +3,15 @@ function fish_title
     if not set -q INSIDE_EMACS; or string match -vq '*,term:*' -- $INSIDE_EMACS
         # An override for the current command is passed as the first parameter.
         # This is used by `fg` to show the true process name, among others.
-        echo (set -q argv[1] && echo $argv[1] || status current-command) (__fish_pwd)
+        if set -q argv[1]
+            echo -- $argv[1] (prompt_pwd -d 1 -D 0)
+        else
+            # Don't print "fish" because it's redundant
+            set -l command (status current-command)
+            if test "$command" = fish
+                set command
+            end
+            echo -- $command (prompt_pwd -d 1 -D 1)
+        end
     end
 end