patch 8.1.2094: the fileio.c file is too big

Problem:    The fileio.c file is too big.
Solution:   Move buf_write() to bufwrite.c. (Yegappan Lakshmanan,
            closes #4990)

Filelist

@@ -21,6 +21,7 @@ SRC_ALL =	\
 		src/blob.c \
 		src/blowfish.c \
 		src/buffer.c \
+		src/bufwrite.c \
 		src/change.c \
 		src/channel.c \
 		src/charset.c \
@@ -186,6 +187,7 @@ SRC_ALL =	\
 		src/proto/blob.pro \
 		src/proto/blowfish.pro \
 		src/proto/buffer.pro \
+		src/proto/bufwrite.pro \
 		src/proto/change.pro \
 		src/proto/channel.pro \
 		src/proto/charset.pro \

src/Make_cyg_ming.mak

@@ -709,6 +709,7 @@ OBJ = \
 	$(OUTDIR)/blob.o \
 	$(OUTDIR)/blowfish.o \
 	$(OUTDIR)/buffer.o \
+	$(OUTDIR)/bufwrite.o \
 	$(OUTDIR)/change.o \
 	$(OUTDIR)/charset.o \
 	$(OUTDIR)/cmdexpand.o \

src/Make_morph.mak

@@ -29,6 +29,7 @@ SRC =	arabic.c						\
 	autocmd.c						\
 	blowfish.c						\
 	buffer.c						\
+	bufwrite.c						\
 	change.c						\
 	charset.c						\
 	cmdexpand.c						\

src/Make_mvc.mak

@@ -716,6 +716,7 @@ OBJ = \
 	$(OUTDIR)\blob.obj \
 	$(OUTDIR)\blowfish.obj \
 	$(OUTDIR)\buffer.obj \
+	$(OUTDIR)\bufwrite.obj \
 	$(OUTDIR)\change.obj \
 	$(OUTDIR)\charset.obj \
 	$(OUTDIR)\cmdexpand.obj \
@@ -1457,6 +1458,8 @@ $(OUTDIR)/blowfish.obj:	$(OUTDIR) blowfish.c  $(INCL)
 
 $(OUTDIR)/buffer.obj:	$(OUTDIR) buffer.c  $(INCL)
 
+$(OUTDIR)/bufwrite.obj:	$(OUTDIR) bufwrite.c  $(INCL)
+
 $(OUTDIR)/change.obj:	$(OUTDIR) change.c  $(INCL)
 
 $(OUTDIR)/charset.obj:	$(OUTDIR) charset.c  $(INCL)
@@ -1788,6 +1791,7 @@ proto.h: \
 	proto/blob.pro \
 	proto/blowfish.pro \
 	proto/buffer.pro \
+	proto/bufwrite.pro \
 	proto/change.pro \
 	proto/charset.pro \
 	proto/cmdexpand.pro \

src/Make_vms.mms

@@ -2,7 +2,7 @@
 # Makefile for Vim on OpenVMS
 #
 # Maintainer:   Zoltan Arpadffy <arpadffy@polarhome.com>
-# Last change:  2019 Sep 27
+# Last change:  2019 Sep 28
 #
 # This has script been tested on VMS 6.2 to 8.2 on DEC Alpha, VAX and IA64
 # with MMS and MMK
@@ -307,48 +307,210 @@ ALL_CFLAGS_VER = /def=($(MODEL_DEF)$(DEFS)$(DEBUG_DEF)$(PERL_DEF)$(PYTHON_DEF) -
 ALL_LIBS = $(LIBS) $(GUI_LIB_DIR) $(GUI_LIB) \
 	   $(PERL_LIB) $(PYTHON_LIB) $(TCL_LIB) $(RUBY_LIB)
 
-SRC =	arabic.c arglist.c autocmd.c beval.c blob.c blowfish.c buffer.c \
-	change.c charset.c cmdexpand.c cmdhist.c crypt.c crypt_zip.c \
-	debugger.c dict.c diff.c digraph.c drawline.c drawscreen.c edit.c \
-	eval.c evalbuffer.c evalfunc.c \
-	evalvars.c evalwindow.c ex_cmds.c ex_cmds2.c ex_docmd.c ex_eval.c \
+SRC = \
+	arabic.c \
+	arglist.c \
+	autocmd.c \
+	beval.c \
+	blob.c \
+	blowfish.c \
+	buffer.c \
+	bufwrite.c \
+	change.c \
+	charset.c \
+	cmdexpand.c \
+	cmdhist.c \
+	crypt.c \
+	crypt_zip.c \
+	debugger.c \
+	dict.c \
+	diff.c \
+	digraph.c \
+	drawline.c \
+	drawscreen.c \
+	edit.c \
+	eval.c \
+	evalbuffer.c \
+	evalfunc.c \
+	evalvars.c \
+	evalwindow.c \
+	ex_cmds.c \
+	ex_cmds2.c \
+	ex_docmd.c \
+	ex_eval.c \
 	ex_getln.c \
-	if_cscope.c if_xcmdsrv.c fileio.c filepath.c, findfile.c fold.c \
-	getchar.c hardcopy.c hashtab.c highlight.c \
-	indent.c insexpand.c json.c list.c main.c map.c mark.c menu.c mbyte.c \
-	memfile.c memline.c message.c misc1.c misc2.c mouse.c move.c normal.c \
+	fileio.c \
+	filepath.c, \
+	findfile.c \
+	fold.c \
+	getchar.c \
+	hardcopy.c \
+	hashtab.c \
+	highlight.c \
+	if_cscope.c \
+	if_xcmdsrv.c \
+	indent.c \
+	insexpand.c \
+	json.c \
+	list.c \
+	main.c \
+	map.c \
+	mark.c \
+	mbyte.c \
+	memfile.c \
+	memline.c \
+	menu.c \
+	message.c \
+	misc1.c \
+	misc2.c \
+	mouse.c \
+	move.c \
+	normal.c \
 	ops.c \
-	option.c optionstr.c popupmenu.c popupwin.c profiler.c quickfix.c \
-	regexp.c register.c scriptfile.c \
-	search.c session.c sha256.c sign.c spell.c spellfile.c spellsuggest.c \
-	syntax.c tag.c \
-	term.c termlib.c testing.c textprop.c ui.c undo.c usercmd.c \
-	userfunc.c version.c viminfo.c screen.c window.c os_unix.c os_vms.c \
+	option.c \
+	optionstr.c \
+	os_unix.c \
+	os_vms.c \
 	pathdef.c \
-	$(GUI_SRC) $(PERL_SRC) $(PYTHON_SRC) $(TCL_SRC) \
- 	$(RUBY_SRC) $(HANGULIN_SRC) $(MZSCH_SRC) $(XDIFF_SRC)
-
-OBJ = 	arabic.obj arglist.obj autocmd.obj beval.obj blob.obj blowfish.obj \
-	buffer.obj change.obj charset.obj cmdexpand.obj cmdhist.obj \
-	crypt.obj crypt_zip.obj debugger.obj dict.obj diff.obj digraph.obj \
-	drawline.obj drawscreen.obj edit.obj eval.obj evalbuffer.obj \
-	evalfunc.obj evalvars.obj evalwindow.obj ex_cmds.obj ex_cmds2.obj \
-	ex_docmd.obj ex_eval.obj ex_getln.obj if_cscope.obj if_xcmdsrv.obj \
-	fileio.obj filepath.obj \
-	findfile.obj fold.obj getchar.obj hardcopy.obj hashtab.obj \
-	highlight.obj indent.obj insexpand.obj json.obj list.obj main.obj \
-	map.obj mark.obj menu.obj memfile.obj memline.obj message.obj \
-	misc1.obj misc2.obj mouse.obj move.obj mbyte.obj normal.obj ops.obj \
+	popupmenu.c \
+	popupwin.c \
+	profiler.c \
+	quickfix.c \
+	regexp.c \
+	register.c \
+	screen.c \
+	scriptfile.c \
+	search.c \
+	session.c \
+	sha256.c \
+	sign.c \
+	spell.c \
+	spellfile.c \
+	spellsuggest.c \
+	syntax.c \
+	tag.c \
+	term.c \
+	termlib.c \
+	testing.c \
+	textprop.c \
+	ui.c \
+	undo.c \
+	usercmd.c \
+	userfunc.c \
+	version.c \
+	viminfo.c \
+	window.c \
+	$(GUI_SRC) \
+	$(PERL_SRC) \
+	$(PYTHON_SRC) \
+	$(TCL_SRC) \
+	$(RUBY_SRC) \
+	$(HANGULIN_SRC) \
+	$(MZSCH_SRC) \
+	$(XDIFF_SRC)
+
+OBJ = \
+	arabic.obj \
+	arglist.obj \
+	autocmd.obj \
+	beval.obj \
+	blob.obj \
+	blowfish.obj \
+	buffer.obj \
+	bufwrite.obj \
+	change.obj \
+	charset.obj \
+	cmdexpand.obj \
+	cmdhist.obj \
+	crypt.obj \
+	crypt_zip.obj \
+	debugger.obj \
+	dict.obj \
+	diff.obj \
+	digraph.obj \
+	drawline.obj \
+	drawscreen.obj \
+	edit.obj \
+	eval.obj \
+	evalbuffer.obj \
+	evalfunc.obj \
+	evalvars.obj \
+	evalwindow.obj \
+	ex_cmds.obj \
+	ex_cmds2.obj \
+	ex_docmd.obj \
+	ex_eval.obj \
+	ex_getln.obj \
+	fileio.obj \
+	filepath.obj \
+	findfile.obj \
+	fold.obj \
+	getchar.obj \
+	hardcopy.obj \
+	hashtab.obj \
+	highlight.obj \
+	if_cscope.obj \
+	if_mzsch.obj \
+	if_xcmdsrv.obj \
+	indent.obj \
+	insexpand.obj \
+	json.obj \
+	list.obj \
+	main.obj \
+	map.obj \
+	mark.obj \
+	mbyte.obj \
+	memfile.obj \
+	memline.obj \
+	menu.obj \
+	message.obj \
+	misc1.obj \
+	misc2.obj \
+	mouse.obj \
+	move.obj \
+	normal.obj \
+	ops.obj \
 	option.obj \
-	optionstr.obj popupmenu.obj popupwin.obj profiler.obj quickfix.obj \
-	regexp.obj register.obj scriptfile.obj \
-	search.obj session.obj sha256.obj sign.obj spell.obj spellfile.obj \
-	spellsuggest.obj syntax.obj tag.obj term.obj termlib.obj testing.obj \
+	optionstr.obj \
+	os_unix.obj \
+	os_vms.obj \
+	pathdef.obj \
+	popupmenu.obj \
+	popupwin.obj \
+	profiler.obj \
+	quickfix.obj \
+	regexp.obj \
+	register.obj \
+	screen.obj \
+	scriptfile.obj \
+	search.obj \
+	session.obj \
+	sha256.obj \
+	sign.obj \
+	spell.obj \
+	spellfile.obj \
+	spellsuggest.obj \
+	syntax.obj \
+	tag.obj \
+	term.obj \
+	termlib.obj \
+	testing.obj \
 	textprop.obj \
-	ui.obj undo.obj usercmd.obj userfunc.obj screen.obj version.obj \
-	viminfo.obj window.obj os_unix.obj os_vms.obj pathdef.obj if_mzsch.obj \
-	$(GUI_OBJ) $(PERL_OBJ) $(PYTHON_OBJ) $(TCL_OBJ) \
- 	$(RUBY_OBJ) $(HANGULIN_OBJ) $(MZSCH_OBJ) $(XDIFF_OBJ)
+	ui.obj \
+	undo.obj \
+	usercmd.obj \
+	userfunc.obj \
+	version.obj \
+	viminfo.obj \
+	window.obj \
+	$(GUI_OBJ) \
+	$(PERL_OBJ) \
+	$(PYTHON_OBJ) \
+	$(TCL_OBJ) \
+	$(RUBY_OBJ) \
+	$(HANGULIN_OBJ) \
+	$(MZSCH_OBJ) \
+	$(XDIFF_OBJ)
 
 # Default target is making the executable
 all : [.auto]config.h mmk_compat motif_env gtk_env perl_env python_env tcl_env ruby_env $(TARGET)
@@ -526,6 +688,10 @@ buffer.obj : buffer.c vim.h [.auto]config.h feature.h os_unix.h \
  ascii.h keymap.h term.h macros.h structs.h regexp.h \
  gui.h beval.h [.proto]gui_beval.pro option.h ex_cmds.h proto.h \
  globals.h version.h
+bufwrite.obj : bufwrite.c vim.h [.auto]config.h feature.h os_unix.h \
+ ascii.h keymap.h term.h macros.h structs.h regexp.h \
+ gui.h beval.h [.proto]gui_beval.pro option.h ex_cmds.h proto.h \
+ globals.h version.h
 change.obj : change.c vim.h [.auto]config.h feature.h os_unix.h \
  ascii.h keymap.h term.h macros.h structs.h regexp.h \
  gui.h beval.h [.proto]gui_beval.pro option.h ex_cmds.h proto.h \

src/Makefile

@@ -1668,6 +1668,7 @@ BASIC_SRC = \
 	version.c \
 	viminfo.c \
 	window.c \
+	bufwrite.c \
 	$(OS_EXTRA_SRC)
 
 SRC =	$(BASIC_SRC) \
@@ -1804,6 +1805,7 @@ OBJ_COMMON = \
 	objects/version.o \
 	objects/viminfo.o \
 	objects/window.o \
+	objects/bufwrite.o \
 	$(GUI_OBJ) \
 	$(TERM_OBJ) \
 	$(LUA_OBJ) \
@@ -1966,6 +1968,7 @@ PRO_AUTO = \
 	version.pro \
 	viminfo.pro \
 	window.pro \
+	bufwrite.pro \
 	beval.pro \
 	gui_beval.pro \
 	netbeans.pro \
@@ -3432,6 +3435,9 @@ objects/viminfo.o: viminfo.c
 objects/window.o: window.c
 	$(CCC) -o $@ window.c
 
+objects/bufwrite.o: bufwrite.c
+	$(CCC) -o $@ bufwrite.c
+
 objects/netbeans.o: netbeans.c
 	$(CCC) -o $@ netbeans.c
 
@@ -3949,6 +3955,10 @@ objects/window.o: window.c vim.h protodef.h auto/config.h feature.h os_unix.h \
  auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
  proto.h globals.h
+objects/bufwrite.o: bufwrite.c vim.h protodef.h auto/config.h feature.h os_unix.h \
+ auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
+ proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
+ proto.h globals.h
 objects/gui.o: gui.c vim.h protodef.h auto/config.h feature.h os_unix.h \
  auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \

src/README.md

@@ -27,6 +27,7 @@ arglist.c	| handling argument list
 autocmd.c	| autocommands
 blob.c		| blob data type
 buffer.c	| manipulating buffers (loaded files)
+bufwrite.c	| writing a buffer to file
 change.c	| handling changes to text
 cmdexpand.c	| command-line completion
 cmdhist.c	| command-line history