Bug #685051 Adding --mid-search option to --list

This will enable users to find a row with a text matching the
middle of the row.

Consider the following list:

    Little piggy one
    Little piggy two
    Little piggy three

As a user I would expect that entering 'th' would focus the last row, because
it's the first one that contains 'th'

1 files changed, 1 insertions, 0 deletions

diff --git a/src/zenity.h b/src/zenity.h
index 4cf7a044..4b3214dd 100644
--- a/src/zenity.h
+++ b/src/zenity.h
@@ -132,6 +132,7 @@ typedef struct {
   gchar        *separator;
   gboolean      multi;
   gboolean      editable;
+  gboolean      mid_search;
   gchar	       *print_column;
   gchar	       *hide_column;
   const gchar **data;