patch 8.0.0693: no terminal emulator support

Problem:    No terminal emulator support.  Cannot properly run commands in the
            GUI.  Cannot run a job interactively with an ssh connection.
Solution:   Very early implementation of the :terminal command.  Includes
            libvterm converted to ANSI C.  Many parts still missing.

1 files changed, 54 insertions, 3 deletions

diff --git a/src/Makefile b/src/Makefile
index 2df82eced..907fdb127 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -482,6 +482,11 @@ CClink = $(CC)
 # Uncomment this when you do not want inter process communication.
 #CONF_OPT_CHANNEL = --disable-channel
 
+# TERMINAL - Terminal emulator support, :terminal command.  Requires the
+# channel feature.
+# Uncomment this when you want terminal emulator support.
+#CONF_OPT_TERMINAL = --enable-terminal
+
 # MULTIBYTE - To edit multi-byte characters.
 # Uncomment this when you want to edit a multibyte language.
 # It's automatically enabled with normal features, GTK or IME support.
@@ -598,6 +603,9 @@ CClink = $(CC)
 
 # Use this with GCC to check for mistakes, unused arguments, etc.
 #CFLAGS = -g -Wall -Wextra -Wshadow -Wmissing-prototypes -Wunreachable-code -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
+# Add -Wpedantic to find // comments and other C99 constructs.
+# Better disable Perl and Python to avoid a lot of warnings.
+#CFLAGS = -g -Wall -Wextra -Wshadow -Wmissing-prototypes -Wpedantic -Wunreachable-code -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
 #CFLAGS = -g -O2 -Wall -Wextra -Wmissing-prototypes -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DU_DEBUG
 #PYTHON_CFLAGS_EXTRA = -Wno-missing-field-initializers
 #MZSCHEME_CFLAGS_EXTRA = -Wno-unreachable-code -Wno-unused-parameter
@@ -1371,6 +1379,13 @@ ALL_GUI_PRO  = gui.pro gui_gtk.pro gui_motif.pro gui_xmdlg.pro gui_athena.pro gu
 
 # }}}
 
+TERM_DEPS = \
+	libvterm/include/vterm.h \
+	libvterm/include/vterm_keycodes.h \
+	libvterm/src/rect.h \
+	libvterm/src/utf8.h \
+	libvterm/src/vterm_internal.h
+
 ### Command to create dependencies based on #include "..."
 ### prototype headers are ignored due to -DPROTO, system
 ### headers #include <...> are ignored if we use the -MM option, as
@@ -1560,6 +1575,7 @@ BASIC_SRC = \
 	syntax.c \
 	tag.c \
 	term.c \
+	terminal.c \
 	ui.c \
 	undo.c \
 	userfunc.c \
@@ -1569,6 +1585,7 @@ BASIC_SRC = \
 
 SRC =	$(BASIC_SRC) \
 	$(GUI_SRC) \
+	$(TERM_SRC) \
 	$(HANGULIN_SRC) \
 	$(LUA_SRC) \
 	$(MZSCHEME_SRC) \
@@ -1610,7 +1627,7 @@ ALL_SRC = $(BASIC_SRC) $(ALL_GUI_SRC) $(UNITTEST_SRC) $(EXTRA_SRC)
 LINT_SRC = $(BASIC_SRC) $(GUI_SRC) $(HANGULIN_SRC) \
 	   $(PYTHON_SRC) $(PYTHON3_SRC) $(TCL_SRC) \
 	   $(WORKSHOP_SRC) $(WSDEBUG_SRC) \
-	   $(NETBEANS_SRC) $(CHANNEL_SRC)
+	   $(NETBEANS_SRC) $(CHANNEL_SRC) $(TERM_SRC)
 #LINT_SRC = $(SRC)
 #LINT_SRC = $(ALL_SRC)
 #LINT_SRC = $(BASIC_SRC)
@@ -1665,12 +1682,14 @@ OBJ_COMMON = \
 	objects/syntax.o \
 	objects/tag.o \
 	objects/term.o \
+	objects/terminal.o \
 	objects/ui.o \
 	objects/undo.o \
 	objects/userfunc.o \
 	objects/version.o \
 	objects/window.o \
 	$(GUI_OBJ) \
+	$(TERM_OBJ) \
 	$(LUA_OBJ) \
 	$(MZSCHEME_OBJ) \
 	$(PERL_OBJ) \
@@ -1795,6 +1814,7 @@ PRO_AUTO = \
 	syntax.pro \
 	tag.pro \
 	term.pro \
+	terminal.pro \
 	termlib.pro \
 	ui.pro \
 	undo.pro \
@@ -1848,7 +1868,7 @@ config auto/config.mk: auto/configure config.mk.in config.h.in
 		$(CONF_OPT_OUTPUT) $(CONF_OPT_GPM) $(CONF_OPT_WORKSHOP) \
 		$(CONF_OPT_FEAT) $(CONF_TERM_LIB) \
 		$(CONF_OPT_COMPBY) $(CONF_OPT_ACL) $(CONF_OPT_NETBEANS) \
-		$(CONF_OPT_CHANNEL) \
+		$(CONF_OPT_CHANNEL) $(CONF_OPT_TERMINAL) \
 		$(CONF_ARGS) $(CONF_OPT_MZSCHEME) $(CONF_OPT_PLTHOME) \
 		$(CONF_OPT_LUA) $(CONF_OPT_LUA_PREFIX) \
 		$(CONF_OPT_SYSMOUSE); \
@@ -3228,6 +3248,9 @@ objects/tag.o: tag.c
 objects/term.o: term.c
 	$(CCC) -o $@ term.c
 
+objects/terminal.o: terminal.c $(TERM_DEPS)
+	$(CCC) -o $@ terminal.c
+
 objects/ui.o: ui.c
 	$(CCC) -o $@ ui.c
 
@@ -3255,6 +3278,34 @@ objects/channel.o: channel.c
 Makefile:
 	@echo The name of the makefile MUST be "Makefile" (with capital M)!!!!
 
+CCCTERM = $(CCC) -Ilibvterm/include -DINLINE=""
+objects/term_encoding.o: libvterm/src/encoding.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/encoding.c
+
+objects/term_keyboard.o: libvterm/src/keyboard.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/keyboard.c
+
+objects/term_mouse.o: libvterm/src/mouse.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/mouse.c
+
+objects/term_parser.o: libvterm/src/parser.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/parser.c
+
+objects/term_pen.o: libvterm/src/pen.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/pen.c
+
+objects/term_screen.o: libvterm/src/screen.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/screen.c
+
+objects/term_state.o: libvterm/src/state.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/state.c
+
+objects/term_unicode.o: libvterm/src/unicode.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/unicode.c
+
+objects/term_vterm.o: libvterm/src/vterm.c $(TERM_DEPS)
+	$(CCCTERM) -o $@ libvterm/src/vterm.c
+
 ###############################################################################
 ### MacOS X installation
 ###
@@ -3399,7 +3450,7 @@ objects/ex_cmds2.o: ex_cmds2.c vim.h auto/config.h feature.h os_unix.h \
 objects/ex_docmd.o: ex_docmd.c vim.h auto/config.h feature.h os_unix.h \
  auto/osdef.h ascii.h keymap.h term.h macros.h option.h structs.h \
  regexp.h gui.h gui_beval.h proto/gui_beval.pro alloc.h ex_cmds.h spell.h \
- proto.h globals.h farsi.h arabic.h
+ proto.h globals.h farsi.h arabic.h ex_cmdidxs.h
 objects/ex_eval.o: ex_eval.c vim.h auto/config.h feature.h os_unix.h auto/osdef.h \
  ascii.h keymap.h term.h macros.h option.h structs.h regexp.h gui.h \
  gui_beval.h proto/gui_beval.pro alloc.h ex_cmds.h spell.h proto.h \