[vte] parser: Update sequences with additions from recent xterm

[Christian Persch <chpe src gnome org>]

commit 7a484cdec223b4241d7497e08be3cda99480e25a
Author: Christian Persch <chpe src gnome org>
Date:   Thu Oct 22 20:34:52 2020 +0200

    parser: Update sequences with additions from recent xterm

 src/parser-seq.py |  25 ++++++--
 src/vteseq.cc     | 187 ++++++++++++++++++++++++++++++++++++++----------------
 2 files changed, 152 insertions(+), 60 deletions(-)
---
diff --git a/src/parser-seq.py b/src/parser-seq.py
index 7ee79c8d..2ed8314b 100755
--- a/src/parser-seq.py
+++ b/src/parser-seq.py
@@ -531,12 +531,18 @@ sequences = [
             comment='delete character'),
     seq_CSI('PPA', 'P', intermediates=(Intermediate.SPACE,), flags=Flags.NOP,
             comment='page position absolute'),
+    seq_CSI('XTERM_PUSHCOLORS', 'P', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+            comment='xterm push color palette stack'),
     seq_CSI('SEE', 'Q', flags=Flags.NOP,
             comment='select editing extent'),
     seq_CSI('PPR', 'Q', intermediates=(Intermediate.SPACE,), flags=Flags.NOP,
             comment='page position relative'),
+    seq_CSI('XTERM_POPCOLORS', 'Q', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+            comment='xterm pop color palette stack'),
     seq_CSI('PPB', 'R', intermediates=(Intermediate.SPACE,), flags=Flags.NOP,
             comment='page position backward'),
+    seq_CSI('XTERM_REPORTCOLORS', 'R', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+            comment='xterm Report color palette stack'),
     seq_CSI('SU', 'S',
             comment='scroll up'),
     seq_CSI('SPD', 'S', intermediates=(Intermediate.SPACE,),
@@ -661,8 +667,8 @@ sequences = [
             comment='select graphics rendition'),
     seq_CSI('DECSGR', 'm', pintro=(ParameterIntro.WHAT,), flags=Flags.NOP,
             comment='DEC select graphics rendition'),
-    seq_CSI('XTERM_SRV', 'm', pintro=(ParameterIntro.GT,), flags=Flags.NOP,
-            comment='xterm set resource value'),
+    seq_CSI('XTERM_MODKEYS', 'm', pintro=(ParameterIntro.GT,), flags=Flags.NOP,
+            comment='xterm set key modifier options'),
     seq_CSI('DSR_ECMA', 'n',
             comment='device status report ecma'),
     seq_CSI('XTERM_RRV', 'n', pintro=(ParameterIntro.GT,), flags=Flags.NOP,
@@ -679,6 +685,10 @@ sequences = [
             comment='soft terminal reset'),
     seq_CSI('DECSCL', 'p', intermediates=(Intermediate.DQUOTE,),
             comment='select conformance level'),
+    # This will remain a NOP even if VTE ever implements XTERM_PUSHSGR, see
+    # https://gitlab.gnome.org/GNOME/vte/-/issues/23#note_513969
+    seq_CSI('XTERM_PUSHSGR', 'p', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+            comment='xterm push SGR stack'),
     seq_CSI('DECRQM_ECMA', 'p', intermediates=(Intermediate.CASH,),
             comment='request mode ecma'),
     seq_CSI('DECSDPT', 'p', intermediates=(Intermediate.PCLOSE,), flags=Flags.NOP,
@@ -701,6 +711,9 @@ sequences = [
             comment='set cursor style'),
     seq_CSI('DECSCA', 'q', intermediates=(Intermediate.DQUOTE,), flags=Flags.NOP,
             comment='select character protection attribute'),
+    # See comment above for XTERM_PUSHSGR
+    seq_CSI('XTERM_POPSGR', 'q', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+            comment='xterm pop SGR stack'),
     seq_CSI('DECSDDT', 'q', intermediates=(Intermediate.CASH,), flags=Flags.NOP,
             comment='select disconnect delay time'),
     seq_CSI('DECSR', 'q', intermediates=(Intermediate.MULT,),
@@ -815,7 +828,7 @@ sequences = [
             comment='program key action'),
     seq_CSI('DECDLDA', 'z', intermediates=(Intermediate.COMMA,), flags=Flags.NOP,
             comment='down line load allocation'),
-    seq_CSI('XTERM_SGR_STACK_PUSH', '{', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+    seq_CSI('XTERM_PUSHSGR', '{', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
             comment='xterm push SGR stack'),
     seq_CSI('DECSERA', '{', intermediates=(Intermediate.CASH,), flags=Flags.NOP,
             comment='selective erase rectangular area'),
@@ -825,7 +838,7 @@ sequences = [
             comment='select color lookup table'),
     seq_CSI('DECSZS', '{', intermediates=(Intermediate.COMMA,), flags=Flags.NOP,
             comment='select zero symbol'),
-    seq_CSI('XTERM_SGR_REPORT', '|', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+    seq_CSI('XTERM_REPORTSGR', '|', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
             comment='xterm SGR report'),
     seq_CSI('DECSCPP', '|', intermediates=(Intermediate.CASH,), flags=Flags.NOP,
             comment='select columns per page'),
@@ -837,7 +850,7 @@ sequences = [
             comment='assign color'),
     seq_CSI('DECKBD', '}', intermediates=(Intermediate.SPACE,), flags=Flags.NOP,
             comment='keyboard language selection'),
-    seq_CSI('XTERM_SGR_STACK_POP', '}', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
+    seq_CSI('XTERM_POPSGR', '}', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
             comment='xterm pop SGR stack'),
     seq_CSI('DECSASD', '}', intermediates=(Intermediate.CASH,), flags=Flags.NOP,
             comment='select active status display'),
@@ -857,6 +870,8 @@ sequences = [
             comment='play sound'),
 
     # DCS sequences
+    seq_DCS('XTERM_GETXRES', 'Q', intermediates=(Intermediate.PLUS,), flags=Flags.NOP,
+            comment='xterm get X resource'),
     seq_DCS('RLOGIN_MML', 'm', intermediates=(Intermediate.HASH,), flags=Flags.NOP,
             comment='RLogin music macro language'),
     seq_DCS('DECREGIS', 'p', flags=Flags.NOP,
diff --git a/src/vteseq.cc b/src/vteseq.cc
index 1639bbe4..8a7a4906 100644
--- a/src/vteseq.cc
+++ b/src/vteseq.cc
@@ -3074,6 +3074,7 @@ Terminal::DECFRA(vte::parser::Sequence const& seq)
          * either each UTF-8 byte in a subparam of its own, or just split
          * the unicode plane off into the leading subparam (plane:remaining 16 bits).
          * Or by using the last graphic character for it, like REP.
+         * See also the changes wrt. UTF-8 handling here in XTERM 357.
          */
 }
 
@@ -8483,12 +8484,24 @@ Terminal::XTERM_CHECKSUM_MODE(vte::parser::Sequence const& seq)
          * Defaults:
          *   args[0]: 0, matching the output from VTxxx terminals
          *
-         * References: XTERM (since 335)
+         * References: XTERM 335
          *
          * Probably not worth implementing.
          */
 }
 
+void
+Terminal::XTERM_GETXRES(vte::parser::Sequence const& seq)
+{
+        /*
+         * XTERM_GETXRES - xterm get X resource
+         *
+         * References: XTERM 350
+         *
+         * Won't implement.
+         */
+}
+
 void
 Terminal::XTERM_IHMT(vte::parser::Sequence const& seq)
 {
@@ -8520,64 +8533,122 @@ Terminal::XTERM_MUHP(vte::parser::Sequence const& seq)
 }
 
 void
-Terminal::XTERM_RPM(vte::parser::Sequence const& seq)
+Terminal::XTERM_MODKEYS(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_RPM - xterm restore DEC private mode
-         *
-         * Defaults: none
+         * XTERM_MODKEYS - xterm set key modifier options
          *
-         * References: XTERM
+         * Probably not worth implementing.
          */
+}
 
-        save_mode_private(seq, false);
+void
+Terminal::XTERM_POPCOLORS(vte::parser::Sequence const& seq)
+{
+        /*
+         * XTERM_POPCOLORS: pop color palette stack
+         * Restore color palette attributes previously pushed to the stack
+         * with XTERM_PUSHCOLORS. If there is nothing on the
+         * stack, does nothing.
+         *
+         * Arguments: none
+         *
+         * References: XTERM 357
+         *
+         * See issue vte#23.
+         */
 }
 
 void
-Terminal::XTERM_RQTCAP(vte::parser::Sequence const& seq)
+Terminal::XTERM_POPSGR(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_TQTCAP - xterm request termcap/terminfo
+         * XTERM_POPSGR: pop SGR stack
+         * Restore SGR attributes previously pushed to the stack
+         * with XTERM_PUSHSGR. If there is nothing on the
+         * stack, does nothing.
          *
-         * Probably not worth implementing.
+         * Arguments: none
+         *
+         * References: XTERM 334
+         *
+         * Note: The {PUSH,POP,REPORT}SGR protocol is poorly thought-out, and has
+         * no real use case. See the discussion at issue vte#23.
+         * Probably won't implement.
          */
 }
 
 void
-Terminal::XTERM_RRV(vte::parser::Sequence const& seq)
+Terminal::XTERM_PUSHCOLORS(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_RRV - xterm-reset-resource-value
+         * XTERM_PUSHSGR: push color palette stack
+         * Push current color palette to the stack.
+         * If the stack is full, drops the bottommost item before
+         * pushing on the stack.
          *
-         * Probably not worth implementing.
+         * If there are any arguments, they are interpreted as in SGR
+         * to denote which attributes to save; if there are no arguments,
+         * all attributes are saved.
+         *
+         * Arguments:
+         *   args[0:]: the attributes
+         *     0 = save all attributes
+         *
+         * Defaults:
+         *   args[0]: 0 (save all attributes)
+         *
+         * References: XTERM 357
+         *
+         * See issue vte#23.
          */
 }
 
 void
-Terminal::XTERM_RTM(vte::parser::Sequence const& seq)
+Terminal::XTERM_PUSHSGR(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_RTM - xterm-reset-title-mode
+         * XTERM_PUSHSGR: push SGR stack
+         * Push current SGR attributes to the stack.
+         * If the stack is full, drops the bottommost item before
+         * pushing on the stack.
          *
-         * Probably not worth implementing.
+         * If there are any arguments, they are interpreted as in SGR
+         * to denote which attributes to save; if there are no arguments,
+         * all attributes are saved.
+         *
+         * Arguments:
+         *   args[0:]: the attributes
+         *     0 = save all attributes
+         *
+         * Defaults:
+         *   args[0]: 0 (save all attributes)
+         *
+         * References: XTERM 334
+         *
+         * Note: The {PUSH,POP,REPORT}SGR protocol is poorly thought-out, and has
+         * no real use case. See the discussion at issue vte#23.
+         * Probably won't implement.
          */
 }
 
 void
-Terminal::XTERM_SGFX(vte::parser::Sequence const& seq)
+Terminal::XTERM_REPORTCOLORS(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_SGFX - xterm-sixel-graphics
+         * XTERM_REPORTCOLORS: report color palette on stack
          *
-         * Probably not worth implementing.
+         * References: XTERM 357
+         *
+         * See issue vte#23.
          */
 }
 
 void
-Terminal::XTERM_SGR_REPORT(vte::parser::Sequence const& seq)
+Terminal::XTERM_REPORTSGR(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_SGR_REPORT: report SGR attributes in rectangular area
+         * XTERM_REPORTSGR: report SGR attributes in rectangular area
          * Report common character attributes in the specified rectangle.
          *
          * Arguments;
@@ -8601,49 +8672,65 @@ Terminal::XTERM_SGR_REPORT(vte::parser::Sequence const& seq)
          * positions.
          *
          * References: XTERM 334
+         *
+         * Note: The {PUSH,POP,REPORT}SGR protocol is poorly thought-out, and has
+         * no real use case. See the discussion at issue vte#23.
+         * Probably won't implement.
          */
-        /* TODO: Implement this */
 }
 
 void
-Terminal::XTERM_SGR_STACK_POP(vte::parser::Sequence const& seq)
+Terminal::XTERM_RPM(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_SGR_STACK_POP: pop SGR stack
-         * Restore SGR attributes previously pushed to the stack
-         * with XTERM_SGR_STACK_PUSH. If there is nothing on the
-         * stack, does nothing.
+         * XTERM_RPM - xterm restore DEC private mode
          *
-         * Arguments: none
+         * Defaults: none
          *
-         * References: XTERM 334
+         * References: XTERM
          */
-        /* TODO: Implement this: https://gitlab.gnome.org/GNOME/vte/issues/23 */
+
+        save_mode_private(seq, false);
 }
 
 void
-Terminal::XTERM_SGR_STACK_PUSH(vte::parser::Sequence const& seq)
+Terminal::XTERM_RQTCAP(vte::parser::Sequence const& seq)
 {
         /*
-         * XTERM_SGR_STACK_PUSH: push SGR stack
-         * Push current SGR attributes to the stack.
-         * If the stack is full, drops the bottommost item before
-         * pushing on the stack.
+         * XTERM_TQTCAP - xterm request termcap/terminfo
          *
-         * If there are any arguments, they are interpreted as in SGR
-         * to denote which attributes to save; if there are no arguments,
-         * all attributes are saved.
+         * Probably not worth implementing.
+         */
+}
+
+void
+Terminal::XTERM_RRV(vte::parser::Sequence const& seq)
+{
+        /*
+         * XTERM_RRV - xterm-reset-resource-value
          *
-         * Arguments:
-         *   args[0:]: the attributes
-         *     0 = save all attributes
+         * Probably not worth implementing.
+         */
+}
+
+void
+Terminal::XTERM_RTM(vte::parser::Sequence const& seq)
+{
+        /*
+         * XTERM_RTM - xterm-reset-title-mode
          *
-         * Defaults:
-         *   args[0]: 0 (save all attributes)
+         * Probably not worth implementing.
+         */
+}
+
+void
+Terminal::XTERM_SGFX(vte::parser::Sequence const& seq)
+{
+        /*
+         * XTERM_SGFX - xterm-sixel-graphics
          *
-         * References: XTERM 334
+         * Probably not worth implementing.
          */
-        /* TODO: Implement this: https://gitlab.gnome.org/GNOME/vte/issues/23 */
 }
 
 void
@@ -8674,16 +8761,6 @@ Terminal::XTERM_PTRMODE(vte::parser::Sequence const& seq)
          */
 }
 
-void
-Terminal::XTERM_SRV(vte::parser::Sequence const& seq)
-{
-        /*
-         * XTERM_SRV - xterm-set-resource-value
-         *
-         * Probably not worth implementing.
-         */
-}
-
 void
 Terminal::XTERM_STM(vte::parser::Sequence const& seq)
 {