magit-file-{ignore,tracked}-p: Convert filename for git

Closes #4966.

Author: tarsius

lisp/magit-files.el

@@ -431,7 +431,7 @@ Git, fallback to using `rename-file'."
       (user-error "%s already exists" dstfile))
     (unless (file-exists-p dstdir)
       (user-error "Destination directory %s does not exist" dstdir))
-    (if (magit-file-tracked-p (magit-convert-filename-for-git file))
+    (if (magit-file-tracked-p file)
         (magit-call-git "mv"
                         (magit-convert-filename-for-git file)
                         (magit-convert-filename-for-git newname))

lisp/magit-git.el

@@ -1074,10 +1074,11 @@ tracked file."
 
 (defun magit-file-ignored-p (file)
   (magit-git-string-p "ls-files" "--others" "--ignored" "--exclude-standard"
-                      "--" file))
+                      "--" (magit-convert-filename-for-git file)))
 
 (defun magit-file-tracked-p (file)
-  (magit-git-success "ls-files" "--error-unmatch" "--" file))
+  (magit-git-success "ls-files" "--error-unmatch"
+                     "--" (magit-convert-filename-for-git file)))
 
 (defun magit-list-files (&rest args)
   (apply #'magit-git-items "ls-files" "-z" "--full-name" args))