Rearrange the PATH to respect the order defined in /etc/paths (#927) and

to prepend it to $PATH instead of appending it (#950)

share/config.fish

@@ -57,41 +57,44 @@ if test -d /usr/xpg4/bin
 	end
 end
 
-# Add a handler for when fish_user_path changes, so we can apply the same changes to PATH
-# Invoke it immediately to apply the current value of fish_user_path
-function __fish_reconstruct_path -d "Update PATH when fish_user_paths changes" --on-variable fish_user_paths
-        set -l local_path $PATH
-        set -l x
-        for x in $__fish_added_user_paths
-                if set -l idx (contains --index $x $local_path)
-                        set -e local_path[$idx]
-                end
-	end
-
-        set -e __fish_added_user_paths
-        for x in $fish_user_paths[-1..1]
-                if not contains $x $local_path
-                        set local_path $x $local_path
-                        set -g __fish_added_user_paths $__fish_added_user_paths $x
-                end
-        end
-        set -xg PATH $local_path
-end
-__fish_reconstruct_path
-
 # OS X-ism: Load the path files out of /etc/paths and /etc/paths.d/*
+set -g __fish_tmp_path $PATH
 function __fish_load_path_helper_paths
     while read -l new_path_comp
-        if not contains $new_path_comp $PATH
-        	set PATH $PATH $new_path_comp
-        end
+	    # We want to rearrange the path to reflect this order. Delete that path component if it exists and then prepend it.
+	    set -l where (contains -i $new_path_comp $__fish_tmp_path)
+        and set -e __fish_tmp_path[$where]
+        set __fish_tmp_path $new_path_comp $__fish_tmp_path
     end
 end
-if test -r /etc/paths ; __fish_load_path_helper_paths < /etc/paths ; end
+test -r /etc/paths ; and __fish_load_path_helper_paths < /etc/paths 
 for pathfile in /etc/paths.d/* ; __fish_load_path_helper_paths < $pathfile ; end
+set -xg PATH $__fish_tmp_path
+set -e __fish_tmp_path
 functions -e __fish_load_path_helper_paths
 
 
+# Add a handler for when fish_user_path changes, so we can apply the same changes to PATH
+# Invoke it immediately to apply the current value of fish_user_path
+function __fish_reconstruct_path -d "Update PATH when fish_user_paths changes" --on-variable fish_user_paths
+	set -l local_path $PATH
+	set -l x
+	for x in $__fish_added_user_paths
+		set -l idx (contains --index $x $local_path)
+		and set -e local_path[$idx]
+	end
+
+	set -e __fish_added_user_paths
+	for x in $fish_user_paths[-1..1]
+		if not contains $x $local_path
+			set local_path $x $local_path
+			set -g __fish_added_user_paths $__fish_added_user_paths $x
+		end
+	end
+	set -xg PATH $local_path
+end
+__fish_reconstruct_path
+
 #
 # Launch debugger on SIGTRAP
 #