reformat all fish scripts

I hate doing this but I am tired of touching a fish script as part of
some change and having `make style` radically change it. Which makes
editing fish scripts more painful than it needs to be. It is time to do
a wholesale reformatting of these scripts to conform to the documented
style as implemented by the `fish_indent` program.

share/functions/__fish_pwd.fish

@@ -1,10 +1,10 @@
 switch (uname)
-case 'CYGWIN_*'
-	function __fish_pwd --description "Show current path"
-		pwd | sed -e 's-^/cygdrive/\(.\)/\?-\u\1:/-'
-	end
-case '*'
-	function __fish_pwd --description "Show current path"
-		pwd
-	end
+    case 'CYGWIN_*'
+        function __fish_pwd --description "Show current path"
+            pwd | sed -e 's-^/cygdrive/\(.\)/\?-\u\1:/-'
+        end
+    case '*'
+        function __fish_pwd --description "Show current path"
+            pwd
+        end
 end