[vte] regex: Add some more debug output

[Christian Persch <chpe src gnome org>]

commit 1855deb46bda149aa1463e05761e3e7f583eed64
Author: Christian Persch <chpe gnome org>
Date:   Wed Oct 7 22:15:05 2015 +0200

    regex: Add some more debug output
    
    Print out the no-match region.

 src/vte.cc |   40 +++++++++++++++++++++++++++++++++-------
 1 files changed, 33 insertions(+), 7 deletions(-)
---
diff --git a/src/vte.cc b/src/vte.cc
index 7a24ecc..2f52632 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -1755,13 +1755,13 @@ vte_terminal_match_check_internal_pcre(VteTerminal *terminal,
                                 eblank = rm_so;
                         }
 
-                       if (sblank > start_blank) {
-                               start_blank = sblank;
-                       }
-                       if (eblank < end_blank) {
-                               end_blank = eblank;
-                       }
-               }
+                        if (sblank > start_blank) {
+                                start_blank = sblank;
+                        }
+                        if (eblank < end_blank) {
+                                end_blank = eblank;
+                        }
+                }
 
                 if (G_UNLIKELY(r < PCRE2_ERROR_PARTIAL))
                         _vte_debug_print(VTE_DEBUG_REGEX, "Unexpected pcre2_match error code: %d\n", r);
@@ -1774,6 +1774,19 @@ vte_terminal_match_check_internal_pcre(VteTerminal *terminal,
         *start = start_blank;
         *end = end_blank - 1;
 
+        _VTE_DEBUG_IF(VTE_DEBUG_REGEX) {
+                struct _VteCharAttributes *_sattr, *_eattr;
+                _sattr = &g_array_index(terminal->pvt->match_attributes,
+                                        struct _VteCharAttributes,
+                                        start_blank);
+                _eattr = &g_array_index(terminal->pvt->match_attributes,
+                                        struct _VteCharAttributes,
+                                        end_blank - 1);
+                g_printerr("No-match region from %" G_GSIZE_FORMAT "(%ld,%ld) to %" G_GSIZE_FORMAT 
"(%ld,%ld)\n",
+                           start_blank, _sattr->column, _sattr->row,
+                           end_blank - 1, _eattr->column, _eattr->row);
+        }
+
        return NULL;
 }
 
@@ -1909,6 +1922,19 @@ vte_terminal_match_check_internal_gregex(VteTerminal *terminal,
         *start = start_blank;
         *end = end_blank - 1;
 
+        _VTE_DEBUG_IF(VTE_DEBUG_REGEX) {
+                struct _VteCharAttributes *_sattr, *_eattr;
+                _sattr = &g_array_index(terminal->pvt->match_attributes,
+                                        struct _VteCharAttributes,
+                                        start_blank);
+                _eattr = &g_array_index(terminal->pvt->match_attributes,
+                                        struct _VteCharAttributes,
+                                        end_blank - 1);
+                g_printerr("No-match region from %" G_GSIZE_FORMAT "(%ld,%ld) to %" G_GSIZE_FORMAT 
"(%ld,%ld)\n",
+                           start_blank, _sattr->column, _sattr->row,
+                           end_blank - 1, _eattr->column, _eattr->row);
+        }
+
        return NULL;
 }