display a highlighted space for zero-length regex matches, so that we

have a reference point when we're replacing them


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1601 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -119,6 +119,10 @@ CVS code -
 	- Add a few efficiency/extensibility tweaks. (David Benbennick)
 	- Convert to use the new low-level input functions, and remove
 	  two last hardcoded widths left after the above tweaks. (DLR)
+  do_replace_highlight()
+	- Display a highlighted space if the word length is zero, so
+	  that we can see zero-length regexes we're replacing. (DLR;
+	  suggested by Mike Frysinger)
 - configure.ac:
 	- Check for glib 2.x and then 1.2.x if we need glib. (DLR)
 - nano.spec.in:

src/winio.c

@@ -2236,7 +2236,11 @@ void do_replace_highlight(int highlight_flag, const char *word)
     if (highlight_flag)
 	wattron(edit, A_REVERSE);
 
-    waddnstr(edit, word, y - 1);
+    /* This is so we can show zero-length regexes. */
+    if (word_len == 0)
+	waddstr(edit, " ");
+    else
+	waddnstr(edit, word, y - 1);
 
     if (word_len > y)
 	waddch(edit, '$');