Make fish remove invalid PATH entries on startup, and give a warning about it

darcs-hash:20060518130017-ac50b-9326ed6b5671bbe0285fd2d5604e4ea69087c7c1.gz

share/fish.in

@@ -4,6 +4,29 @@
 # completions are located in the completions subdirectory.
 #
 
+#
+# Assign a temporary value here for performance reasons. The real value should be set in /etc/fish.
+#
+
+set -g fish_function_path $PWD/functions/
+
+#
+# Make sure there are no invalid entries in the PATH
+#
+
+set -l erase_idx
+for idx in (seq (count $PATH))
+   set i $PATH[$idx]
+   if not test -d $i
+       set erase_idx $erase_idx $idx
+       printf (_ '%s: Warning: The directory %s has been removed from your PATH, because it does not exist\n') fish $i
+   end
+end
+
+if count $erase_idx >/dev/null
+   set -e PATH[(echo $erase_idx)]
+end
+
 #
 # Add a few common directories to path, if they exists. Note that pure
 # console programs like makedep sometimes live in /usr/X11R6/bin, so we
@@ -26,12 +49,6 @@ for i in $path_list
 	end
 end
 
-#
-# Assign a temporary value here for performance reasons. The real value should be set in /etc/fish.
-#
-
-set -g fish_function_path $PWD/functions/
-
 #
 # Don't need completions in non-interactive mode
 #