fix pushd

CHANGELOG.md

@@ -7,6 +7,7 @@
 - On BSD systems, with the `-s` option, `fish_md5` does not use the given string, but `-s`. From now on the string is used.
 - Control-C no longer kills background jobs for which job control is disabled, matching POSIX semantics (#6828).
 - Improve Gradle completion
+- Fixed `pushd`'s behavior with respect to the directory stack when given an invalid argument
 
 ### Syntax changes and new commands
 

share/functions/pushd.fish

@@ -76,6 +76,6 @@ function pushd --description 'Push directory to stack'
     end
 
     # argv[1] is a directory
-    set -g -p dirstack $PWD
-    cd $argv[1]
+    set -l old_pwd $PWD
+    cd $argv[1]; and set -g -p dirstack $old_pwd
 end