hal_util_grep_string_elem_from_file
strvalue = hal_util_grep_string_elem_from_file (directory, file, linestart, elem, reuse);
if ((value = hal_util_grep_string_elem_from_file (directory, file, linestart, elem, reuse)) == NULL)
strvalue = hal_util_grep_string_elem_from_file (directory, file, linestart, elem, reuse);
gchar *hal_util_grep_string_elem_from_file (const gchar *directory, const gchar *file,