This is a Laclin feature patch for "thunar" "git" snapshots dated cir- 
ca Fall 2021.v It preventsv "thunar" from putting spaces  in filenames
resulting from "copy" operations.

As a side effect, internationalization of the filenames in question is
presently disabled. This may be corrected in a future version.

--- thunar-git-dc94f86db.old/thunar/thunar-io-jobs-util.c
+++ thunar-git-dc94f86db/thunar/thunar-io-jobs-util.c
@@ -41,7 +41,8 @@
  *
  * Determines the #GFile for the next copy/link of/to @file.
  *
- * Copies of a file called X are named "X (copy 1)"
+ * Copies of a file called X are named "X_copy_1" w/appropriate num-
+ * ber.
  *
  * Links follow have a bit different scheme, since the first link
  * is renamed to "link to #" and after that "link Y to X".
@@ -111,7 +112,7 @@
  *
  * Determines the #GFile for the next copy/move to @tgt_file.
  *
- * File named X will be renamed to "X (copy 1)".
+ * File named X will be renamed to "X_copy_1" w/appropriate number.
  *
  * If there are errors or the job was cancelled, the return value
  * will be %NULL and @error will be set.
@@ -168,14 +169,14 @@
   if (extension != NULL)
     {
       file_basename = g_strndup (old_filename, extension - old_filename);
-      /* I18N: put " (copy #)" between basename and extension */
-      filename = g_strdup_printf (_("%s (copy %u)%s"), file_basename, n, extension);
+      /* I18N: put "_copy_#" between basename and extension */
+      filename = g_strdup_printf ("%s_copy_%u%s", file_basename, n, extension);
       g_free(file_basename);
     }
   else
     {
-      /* I18N: put " (copy #)" after filename (for files without extension) */
-      filename = g_strdup_printf (_("%s (copy %u)"), old_filename, n);
+      /* I18N: put "_copy_#" after filename (for files without extension) */
+      filename = g_strdup_printf ("%s_copy_%u", old_filename, n);
     }
 
   /* create the GFile for the copy/move */
--- thunar-git-dc94f86db.old/thunar/thunar-util.c
+++ thunar-git-dc94f86db/thunar/thunar-util.c
@@ -723,7 +723,7 @@
       if (name_mode == THUNAR_NEXT_FILE_NAME_MODE_NEW)
         new_name = g_strdup_printf (_("%.*s %u%s"), (int) file_name_size, file_name, ++count, extension ? extension : "");
       else if (name_mode == THUNAR_NEXT_FILE_NAME_MODE_COPY)
-        new_name = g_strdup_printf (_("%.*s (copy %u)%s"), (int) file_name_size, file_name, ++count, extension ? extension : "");
+        new_name = g_strdup_printf (_("%.*s_copy_%u%s"), (int) file_name_size, file_name, ++count, extension ? extension : "");
       else if (name_mode == THUNAR_NEXT_FILE_NAME_MODE_LINK)
         {
           if (count == 0)