[vte] Bug 604241 - improve xterm emulation of set-scrolling-region behaviour

[Behdad Esfahbod <behdad src gnome org>]

commit bd2da3fd0fc436887a61a89b0dd367954fa36745
Author: Behdad Esfahbod <behdad behdad org>
Date:   Thu Apr 1 02:16:56 2010 -0400

    Bug 604241 - improve xterm emulation of set-scrolling-region behaviour

 src/caps.c         |    5 +++++
 src/vteseq-n.gperf |    2 ++
 src/vteseq.c       |   26 ++++++++++++++++++++++++++
 3 files changed, 33 insertions(+), 0 deletions(-)
---
diff --git a/src/caps.c b/src/caps.c
index 26998ce..a63e2c3 100644
--- a/src/caps.c
+++ b/src/caps.c
@@ -496,8 +496,13 @@ struct _vte_capability_string _vte_xterm_capability_strings[] = {
 	{CSI "!p", "soft-reset", 0},
 	{CSI "%d;%d\"p", "set-conformance-level", 0},
 	{CSI "%d\"q", "select-character-protection", 0},
+
 	{CSI "r", "set-scrolling-region", 0},
+	{CSI ";r", "set-scrolling-region", 0},
+	{CSI ";%dr", "set-scrolling-region-from-start", 0},
+	{CSI "%d;r", "set-scrolling-region-to-end", 0},
 	{CSI "%d;%dr", "set-scrolling-region", 0},
+
 	{CSI "?%mr", "restore-mode", 0},
 	{CSI "s", "save-cursor", 0},
 	{CSI "?%ms", "save-mode", 0},
diff --git a/src/vteseq-n.gperf b/src/vteseq-n.gperf
index c60161e..8cbcb21 100644
--- a/src/vteseq-n.gperf
+++ b/src/vteseq-n.gperf
@@ -81,6 +81,8 @@ struct vteseq_n_struct {
 "character-attributes", VTE_SEQUENCE_HANDLER(vte_sequence_handler_character_attributes)
 "device-status-report", VTE_SEQUENCE_HANDLER(vte_sequence_handler_device_status_report)
 "set-scrolling-region", VTE_SEQUENCE_HANDLER(vte_sequence_handler_set_scrolling_region)
+"set-scrolling-region-from-start", VTE_SEQUENCE_HANDLER(vte_sequence_handler_set_scrolling_region_from_start)
+"set-scrolling-region-to-end", VTE_SEQUENCE_HANDLER(vte_sequence_handler_set_scrolling_region_to_end)
 #"set-text-property-21", VTE_SEQUENCE_HANDLER_NULL
 #"set-text-property-2L", VTE_SEQUENCE_HANDLER_NULL
 "cursor-preceding-line", VTE_SEQUENCE_HANDLER(vte_sequence_handler_cursor_preceding_line)
diff --git a/src/vteseq.c b/src/vteseq.c
index 691cf25..d27ad10 100644
--- a/src/vteseq.c
+++ b/src/vteseq.c
@@ -2522,6 +2522,32 @@ vte_sequence_handler_set_scrolling_region (VteTerminal *terminal, GValueArray *p
 	vte_sequence_handler_offset(terminal, params, -1, vte_sequence_handler_cs);
 }
 
+static void
+vte_sequence_handler_set_scrolling_region_from_start (VteTerminal *terminal, GValueArray *params)
+{
+	GValue value = {0};
+
+	g_value_init (&value, G_TYPE_LONG);
+	g_value_set_long (&value, 0); /* Out of range means start/end */
+
+	g_value_array_insert (params, 0, &value);
+
+	vte_sequence_handler_offset(terminal, params, -1, vte_sequence_handler_cs);
+}
+
+static void
+vte_sequence_handler_set_scrolling_region_to_end (VteTerminal *terminal, GValueArray *params)
+{
+	GValue value = {0};
+
+	g_value_init (&value, G_TYPE_LONG);
+	g_value_set_long (&value, 0); /* Out of range means start/end */
+
+	g_value_array_insert (params, 1, &value);
+
+	vte_sequence_handler_offset(terminal, params, -1, vte_sequence_handler_cs);
+}
+
 /* Set the application or normal keypad. */
 static void
 vte_sequence_handler_application_keypad (VteTerminal *terminal, GValueArray *params)