[bug-gettext] Problem with gettext emacs support

[Peter Hull]

I was not able to use the "," (po-tags-search) on a new C project. The
code scanned through all files (leaving them all open in separate
buffers) but did not find any translatable strings.

To test this I set up a simple project with a single C file:

#include <stdio.h>

int main(void) {
  puts("Hello world");
  return 0;
}

I ran 'etags *.' to create the TAGS file.

I ran 'emacs main.po' to start emacs with a new PO file.

I pressed ','

Expected result: "Hello world" string highlighted
Actual result: no text highlighed and 'All files processed' appeared
on the status line at the bottom.

Am I using the gettext mode incorrectly or is there a bug in the mode?

Emacs : version 24.5.1 (from Ubuntu 16.04)
gettext : 0.19.7-2ubuntu3
gettext-el : 0.19.7-2ubuntu3
po-mode-version-string : "2.24"

Thanks,
Peter