# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1700770503 -3600
# Node ID 45c0a53307586b9c4c2d3b80b3fa72053bcd5d22
# Parent  abd7434511dcc2573a51a8cf266a3c6ce791c0ee
patch 9.0.2127: translation Makefiles can be improved

Commit: https://github.com/vim/vim/commit/e214692718d6a997a0540fc688e1417564416f80
Author: RestorerZ <restorer@mail2k.ru>
Date:   Thu Nov 23 20:58:32 2023 +0100

    patch 9.0.2127: translation Makefiles can be improved

    Problem:  translation Makefiles can be improved
    Solution: Modified and extended po-related Makefiles and
              related files

    closes: #13518

    Signed-off-by: RestorerZ <restorer@mail2k.ru>
    Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/Filelist b/Filelist
--- a/Filelist
+++ b/Filelist
@@ -990,6 +990,7 @@ LANG_GEN = \
 		runtime/doc/*-tr.UTF-8.1 \
 		runtime/lang/README.txt \
 		runtime/lang/Makefile \
+		runtime/lang/Make_all.mak \
 		runtime/lang/menu_*.vim \
 		runtime/keymap/README.txt \
 		runtime/keymap/*.vim \
@@ -1049,10 +1050,12 @@ LANG_SRC = \
 		src/po/vim.desktop.in \
 		src/po/gvim.desktop.in \
 		src/po/sjiscorr.c \
+		src/po/big5corr.c \
 		src/po/*.po \
 
 # the language files for the Win32 lang archive
 LANG_DOS = \
 		src/po/*.mo \
+		runtime/lang/Make_mvc.mak \
 
 # vim: set ft=make:
diff --git a/src/po/Make_mvc.mak b/src/po/Make_mvc.mak
--- a/src/po/Make_mvc.mak
+++ b/src/po/Make_mvc.mak
@@ -6,26 +6,55 @@
 # Please read README_mvc.txt before using this file.
 #
 
-!ifndef VIMRUNTIME
-VIMRUNTIME = ..\..\runtime
-!endif
+!IF [powershell -nologo -noprofile "exit $$psversiontable.psversion.major"] == 2
+!ERROR The program "PowerShell" version 3.0 or higher is required to work
+!ENDIF
+
+!IFNDEF LANGUAGE
+!ERROR Set the environment variable %LANGUAGE%. See README_mvc.txt
+!ENDIF
 
 # get LANGUAGES, MOFILES, MOCONVERTED and others
-!include Make_all.mak
+!INCLUDE Make_all.mak
+
+!IFNDEF VIMRUNTIME
+VIMRUNTIME = ..\..\runtime
+!ENDIF
 
 PACKAGE = vim
+# Correct the following line for the where executeable file vim is installed
 VIM = ..\vim
 
 # Correct the following line for the directory where gettext et al is installed
-GETTEXT_PATH = H:\gettext.0.14.4\bin
+GETTEXT_PATH = D:\Programs\GetText\bin
 
 MSGFMT = $(GETTEXT_PATH)\msgfmt -v
 XGETTEXT = $(GETTEXT_PATH)\xgettext
 MSGMERGE = $(GETTEXT_PATH)\msgmerge
 
-MV = move
-CP = copy
-RM = del
+# In case some package like GnuWin32, UnixUtils, gettext
+# or something similar is installed on the system.
+# If the "iconv" program is installed on the system, but it is not registered
+# in the %PATH% environment variable, then specify the full path to this file.
+!IF EXIST ("iconv.exe")
+ICONV = "iconv.exe"
+!ELSEIF EXIST ("$(GETTEXT_PATH)\iconv.exe")
+ICONV="$(GETTEXT_PATH)\iconv.exe"
+!ENDIF
+
+# In case some package like GnuWin32, UnixUtils
+# or something similar is installed on the system.
+# If the "touch" program is installed on the system, but it is not registered
+# in the %PATH% environment variable, then specify the full path to this file.
+!IF EXIST ("touch.exe")
+TOUCH = touch.exe $@
+!ELSE
+TOUCH = @if exist $@ ( copy /b $@+,, ) else ( type nul >$@ )
+!ENDIF
+
+MV = move /y
+CP = copy /y
+RM = del /q
 MKD = mkdir
 LS = dir
 
@@ -34,14 +63,426 @@ LSFLAGS = /b /on /l /s
 INSTALLDIR = $(VIMRUNTIME)\lang\$(LANGUAGE)\LC_MESSAGES
 
 .SUFFIXES:
-.SUFFIXES: .po .mo .pot
+.SUFFIXES: .po .mo .pot .ck
+
+all: $(MOFILES) $(MOCONVERTED)
+
+.po.ck:
+	$(VIM) -u NONE -e -X -S check.vim -c "if error == 0 | q | endif" -c cq $<
+	$(TOUCH)
+
+check: $(CHECKFILES)
+
+checkclean:
+	$(RM) *.ck
+
+converted: $(MOCONVERTED)
+
+nl.po:
+	@( echo \# > nl.po )
+
+# Norwegian/Bokmal: "nb" is an alias for "no".
+nb.po: no.po
+	$(CP) no.po nb.po
+
+# Convert ja.po to create ja.sjis.po.
+ja.sjis.po: ja.po
+	@$(MAKE) -nologo -f Make_mvc.mak sjiscorr
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t CP932 $? | .\sjiscorr.exe > $@
+!ELSEIF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t CP932 $? | .\sjiscorr.exe > $@
+!ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(932))
+	type $@ | .\sjiscorr.exe > tmp.$@
+	@$(MV) tmp.$@ $@
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(932)) \
+		-replace \"`r`n\", \"`n\"; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(932))
+
+sjiscorr: sjiscorr.c
+	$(CC) sjiscorr.c
+
+# Convert ja.po to create ja.euc-jp.po
+ja.euc-jp.po: ja.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t EUC-JP -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t EUC-JP $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(20932))
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(20932)) -replace \
+		'charset=utf-8', 'charset=EUC-JP'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(20932))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(20932)) -replace \
+		'# Original translations', \
+		'# Generated from ja.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(20932))
+
+# Convert cs.po to create cs.cp1250.po.
+cs.cp1250.po: cs.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t CP1250 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f ISO-8859-2 -t CP1250 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(28592)), \
+		[System.Text.Encoding]::GetEncoding(1250))
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1250)) -replace \
+		'charset=iso-8859-2', 'charset=CP1250'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1250))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1250)) -replace \
+		'# Original translations', \
+		'# Generated from cs.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1250))
+
+# Convert pl.po to create pl.cp1250.po.
+pl.cp1250.po: pl.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t CP1250 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f ISO-8859-2 -t CP1250 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(28592)), \
+		[System.Text.Encoding]::GetEncoding(1250))
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1250)) -replace \
+		'charset=iso-8859-2', 'charset=CP1250'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1250))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1250)) -replace \
+		'# Original translations', \
+		'# Generated from pl.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1250))
+
+# Convert pl.po to create pl.UTF-8.po.
+pl.UTF-8.po: pl.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t UTF-8 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f ISO-8859-2 -t UTF-8 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(28592)))
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		(Get-Content -Raw -Encoding UTF8 $@ \
+		^| % {$$_-replace 'charset=iso-8859-2', 'charset=UTF-8'}) \
+		^| 1>nul New-Item -Force -Path . -ItemType file -Name $@
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		(Get-Content -Raw -Encoding UTF8 $@ \
+		^| % {$$_-replace '# Original translations', \
+		'# Generated from pl.po, DO NOT EDIT'}) \
+		^| 1>nul New-Item -Force -Path . -ItemType file -Name $@
+
+# Convert sk.po to create sk.cp1250.po.
+sk.cp1250.po: sk.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t CP1250 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f ISO-8859-2 -t CP1250 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(28592)), \
+		[System.Text.Encoding]::GetEncoding(1250))
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1250)) -replace \
+		'charset=iso-8859-2', 'charset=CP1250'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1250))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1250)) -replace \
+		'# Original translations', \
+		'# Generated from sk.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1250))
+
+# Convert zh_CN.UTF-8.po to create zh_CN.po.
+zh_CN.po: zh_CN.UTF-8.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t GB2312 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t GB2312 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(936))
+
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(936)) -replace \
+		'charset=UTF-8', 'charset=GB2312'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(936))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(936)) -replace \
+		'# Original translations', \
+		'# Generated from zh_CN.UTF-8.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(936))
+
+# Convert zh_CN.UTF-8.po to create zh_CN.cp936.po.
+# Set 'charset' to gbk to avoid that msfmt generates a warning.
+# This used to convert from zh_CN.po, but that results in a conversion error.
+zh_CN.cp936.po: zh_CN.UTF-8.po
+	-$(RM) $@
+!IF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t CP936 $? > $@
+!ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(20936))
+
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(20936)) \
+		-replace 'charset=UTF-8', 'charset=GBK'\
+		-replace '# Original translations', \
+		'# Generated from zh_CN.UTF-8.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(20936))
+
+# Convert zh_TW.UTF-8.po to create zh_TW.po
+zh_TW.po: zh_TW.UTF-8.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t BIG5 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t BIG5 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(950))
+
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(950)) -replace \
+		'charset=UTF-8', 'charset=BIG5'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(950))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(950)) -replace \
+		'# Original translations', \
+		'# Generated from zh_TW.UTF-8.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(950))
+
+# Convert zh_TW.UTF-8.po to create zh_TW.po with backslash characters
+# Requires doubling backslashes in the second byte.  Don't depend on big5corr,
+# it should only be compiled when zh_TW.po is outdated.
+#
+#  06.11.23, added by Restorer:
+#  For more details, see:
+#  https://github.com/vim/vim/pull/3261
+#  https://github.com/vim/vim/pull/3476
+#  https://github.com/vim/vim/pull/12153
+#  (read all comments)
+#
+#  I checked the workability on the list of backslash characters
+#  specified in zh_TW.UTF-8.po. It works.
+#  But it is better to have someone native speaker check it.
+#
+
+#zh_TW.po: zh_TW.UTF-8.po
+#	@$(MAKE) -nologo -f Make_mvc.mak big5corr
+#	-$(RM) $@
+#!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+#	"$(GETTEXT_PATH)\msgconv.exe" -t BIG5 $? | .\big5corr.exe > $@
+#!ELSEIF DEFINED (ICONV)
+#	$(ICONV) -f UTF-8 -t BIG5 $? | .\big5corr.exe > $@
+#!ELSE
+#	powershell -nologo -noprofile -Command \
+#		[System.IO.File]::WriteAllText(\"$@\", \
+#		[System.IO.File]::ReadAllText(\"$?\", \
+#		[System.Text.Encoding]::GetEncoding(65001)), \
+#		[System.Text.Encoding]::GetEncoding(950))
+#	type $@ | .\big5corr.exe > tmp.$@
+#	@$(MV) tmp.$@ $@
+#!ENDIF
+#	powershell -nologo -noprofile -Command \
+#		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+#		[System.Text.Encoding]::GetEncoding(950)) \
+#		-replace \"`r`n\", \"`n\"; \
+#		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+#		[System.Text.Encoding]::GetEncoding(950))
+
+# see above in the zh_TW.po conversion section for backslashes.
+#big5corr: big5corr.c
+#	$(CC) big5corr.c
+
+# Convert ko.UTF-8.po to create ko.po.
+ko.po: ko.UTF-8.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t EUC-KR -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t EUC-KR $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(51949))
+
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(51949)) -replace \
+		'charset=UTF-8', 'charset=EUC-KR'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(51949))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(51949)) -replace \
+		'# Original translations', \
+		'# Generated from ko.UTF-8.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(51949))
+
+# Convert ru.po to create ru.cp1251.po.
+ru.cp1251.po: ru.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t CP1251 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t CP1251 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(1251))
+
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1251)) -replace \
+		'charset=UTF-8', 'charset=CP1251'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1251))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1251)) -replace \
+		'# Original translations', \
+		'# Generated from ru.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1251))
+
+# Convert uk.po to create uk.cp1251.po.
+uk.cp1251.po: uk.po
+	-$(RM) $@
+!IF EXIST ("$(GETTEXT_PATH)\msgconv.exe")
+	"$(GETTEXT_PATH)\msgconv.exe" -t CP1251 -o $@ $?
+!ELSE
+! IF DEFINED (ICONV)
+	$(ICONV) -f UTF-8 -t CP1251 $? > $@
+! ELSE
+	powershell -nologo -noprofile -Command \
+		[System.IO.File]::WriteAllText(\"$@\", \
+		[System.IO.File]::ReadAllText(\"$?\", \
+		[System.Text.Encoding]::GetEncoding(65001)), \
+		[System.Text.Encoding]::GetEncoding(1251))
+
+! ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1251)) -replace \
+		'charset=UTF-8', 'charset=CP1251'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1251))
+!ENDIF
+	powershell -nologo -noprofile -Command \
+		$$out = [System.IO.File]::ReadAllText(\"$@\", \
+		[System.Text.Encoding]::GetEncoding(1251)) -replace \
+		'# Original translations', \
+		'# Generated from uk.po, DO NOT EDIT'; \
+		[System.IO.File]::WriteAllText(\"$@\", $$out, \
+		[System.Text.Encoding]::GetEncoding(1251))
 
 .po.mo:
 	set OLD_PO_FILE_INPUT=yes
 	$(MSGFMT) -o $@ $<
 
-all: $(MOFILES) $(MOCONVERTED)
-
 PO_INPUTLIST = \
 	..\*.c \
 	..\if_perl.xs \
@@ -57,22 +498,32 @@ files: $(PO_INPUTLIST)
 	$(LS) $(LSFLAGS) $(PO_INPUTLIST) > .\files
 
 first_time: files
-	$(VIM) -u NONE --not-a-term -S tojavascript.vim $(LANGUAGE).pot $(PO_VIM_INPUTLIST)
+	$(VIM) -u NONE --not-a-term -S tojavascript.vim $(LANGUAGE).po \
+		$(PO_VIM_INPUTLIST)
 	set OLD_PO_FILE_INPUT=yes
 	set OLD_PO_FILE_OUTPUT=yes
-	$(XGETTEXT) --default-domain=$(LANGUAGE) --add-comments $(XGETTEXT_KEYWORDS) --files-from=.\files $(PO_VIM_JSLIST)
-	$(VIM) -u NONE --not-a-term -S fixfilenames.vim $(LANGUAGE).pot $(PO_VIM_INPUTLIST)
+	$(XGETTEXT) --default-domain=$(LANGUAGE) --add-comments $(XGETTEXT_KEYWORDS) \
+		--files-from=.\files $(PO_VIM_JSLIST)
+	$(VIM) -u NONE --not-a-term -S fixfilenames.vim $(LANGUAGE).po \
+		$(PO_VIM_INPUTLIST)
 	$(RM) *.js
 
 $(PACKAGE).pot: files
-	$(VIM) -u NONE --not-a-term -S tojavascript.vim $(PACKAGE).pot $(PO_VIM_INPUTLIST)
+	$(VIM) -u NONE --not-a-term -S tojavascript.vim $(PACKAGE).pot \
+		$(PO_VIM_INPUTLIST)
 	set OLD_PO_FILE_INPUT=yes
 	set OLD_PO_FILE_OUTPUT=yes
-	$(XGETTEXT) --default-domain=$(PACKAGE) --add-comments $(XGETTEXT_KEYWORDS) --files-from=.\files $(PO_VIM_JSLIST)
+	$(XGETTEXT) --default-domain=$(PACKAGE) --add-comments $(XGETTEXT_KEYWORDS) \
+		--files-from=.\files $(PO_VIM_JSLIST)
 	$(MV) $(PACKAGE).po $(PACKAGE).pot
-	$(VIM) -u NONE --not-a-term -S fixfilenames.vim $(PACKAGE).pot $(PO_VIM_INPUTLIST)
+	$(VIM) -u NONE --not-a-term -S fixfilenames.vim $(PACKAGE).pot \
+		$(PO_VIM_INPUTLIST)
 	$(RM) *.js
 
+# When updating ja.sjis.po there are a bunch of errors and a crash.
+# The files that are converted to a different encoding clearly state "DO NOT EDIT".
+update-po: $(MOFILES:.mo=)
+
 # Don't add a dependency here, we only want to update the .po files manually
 $(LANGUAGES):
 	@$(MAKE) -nologo -f Make_mvc.mak $(PACKAGE).pot GETTEXT_PATH=$(GETTEXT_PATH)
@@ -81,15 +532,27 @@ first_time: files
 	$(MSGMERGE) $@.po.old $(PACKAGE).pot -o $@.po
 	$(RM) $@.po.old
 
-install:
+install: $(LANGUAGE).mo
 	if not exist $(INSTALLDIR) $(MKD) $(INSTALLDIR)
 	$(CP) $(LANGUAGE).mo $(INSTALLDIR)\$(PACKAGE).mo
 
 install-all: all
-	FOR %%l IN ($(LANGUAGES)) DO @IF NOT EXIST $(VIMRUNTIME)\lang\%%l\LC_MESSAGES $(MKD) $(VIMRUNTIME)\lang\%%l\LC_MESSAGES
-	FOR %%l IN ($(LANGUAGES)) DO @$(CP) %%l.mo $(VIMRUNTIME)\lang\%%l\LC_MESSAGES\$(PACKAGE).mo
+	for %%l in ($(LANGUAGES)) do @if not exist $(VIMRUNTIME)\lang\%%l\LC_MESSAGES \
+		$(MKD) $(VIMRUNTIME)\lang\%%l\LC_MESSAGES
+	for %%l in ($(LANGUAGES)) do @$(CP) %%l.mo \
+		$(VIMRUNTIME)\lang\%%l\LC_MESSAGES\$(PACKAGE).mo
 
-clean:
+cleanup-po: $(LANGUAGE).po
+	$(VIM) -u NONE -e -X -S cleanup.vim -c wq $**
+
+cleanup-po-all: $(POFILES)
+	!$(VIM) -u NONE -e -X -S cleanup.vim -c wq $**
+
+clean: checkclean
 	$(RM) *.mo
 	$(RM) *.pot
 	$(RM) files
+	$(RM) sjiscorr.obj sjiscorr.exe
+#	$(RM) big5corr.obj big5corr.exe
+
+# vim: set noet sw=8 ts=8 sts=0 wm=0 tw=0 ft=make:
diff --git a/src/po/Makefile b/src/po/Makefile
--- a/src/po/Makefile
+++ b/src/po/Makefile
@@ -102,78 +102,128 @@ nb.po: no.po
 ja.sjis.po: ja.po
 	@$(MAKE) sjiscorr
 	rm -f ja.sjis.po
-	iconv -f utf-8 -t cp932 ja.po | ./sjiscorr > ja.sjis.po
+	iconv -f UTF-8 -t CP932 ja.po | ./sjiscorr > ja.sjis.po
 
 sjiscorr: sjiscorr.c
 	$(CC) -o sjiscorr sjiscorr.c
 
 ja.euc-jp.po: ja.po
-	iconv -f utf-8 -t euc-jp ja.po | \
-		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=euc-jp/' -e 's/# Original translations/# Generated from ja.po, DO NOT EDIT/' > ja.euc-jp.po
+	iconv -f UTF-8 -t EUC-JP ja.po | \
+		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=EUC-JP/' \
+			-e 's/# Original translations/# Generated from ja.po, DO NOT EDIT/' \
+			> ja.euc-jp.po
 
 # Convert cs.po to create cs.cp1250.po.
 cs.cp1250.po: cs.po
 	rm -f cs.cp1250.po
-	iconv -f iso-8859-2 -t cp1250 cs.po | \
-		$(SED) -e 's/charset=ISO-8859-2/charset=cp1250/' -e 's/# Original translations/# Generated from cs.po, DO NOT EDIT/' > cs.cp1250.po
+	iconv -f ISO-8859-2 -t CP1250 cs.po | \
+		$(SED) -e 's/charset=[iI][sS][oO]-8859-2/charset=CP1250/' \
+			-e 's/# Original translations/# Generated from cs.po, DO NOT EDIT/' \
+			> cs.cp1250.po
 
 # Convert pl.po to create pl.cp1250.po.
 pl.cp1250.po: pl.po
 	rm -f pl.cp1250.po
-	iconv -f iso-8859-2 -t cp1250 pl.po | \
-		$(SED) -e 's/charset=ISO-8859-2/charset=cp1250/' -e 's/# Original translations/# Generated from pl.po, DO NOT EDIT/' > pl.cp1250.po
+	iconv -f ISO-8859-2 -t CP1250 pl.po | \
+		$(SED) -e 's/charset=[iI][sS][oO]-8859-2/charset=CP1250/' \
+			-e 's/# Original translations/# Generated from pl.po, DO NOT EDIT/' \
+			> pl.cp1250.po
 
 # Convert pl.po to create pl.UTF-8.po.
 pl.UTF-8.po: pl.po
 	rm -f pl.UTF-8.po
-	iconv -f iso-8859-2 -t utf-8 pl.po | \
-		$(SED) -e 's/charset=ISO-8859-2/charset=UTF-8/' -e 's/# Original translations/# Generated from pl.po, DO NOT EDIT/' > pl.UTF-8.po
+	iconv -f ISO-8859-2 -t UTF-8 pl.po | \
+		$(SED) -e 's/charset=[iI][sS][oO]-8859-2/charset=UTF-8/' \
+			-e 's/# Original translations/# Generated from pl.po, DO NOT EDIT/' \
+			> pl.UTF-8.po
 
 # Convert sk.po to create sk.cp1250.po.
 sk.cp1250.po: sk.po
 	rm -f sk.cp1250.po
-	iconv -f iso-8859-2 -t cp1250 sk.po | \
-		$(SED) -e 's/charset=ISO-8859-2/charset=cp1250/' -e 's/# Original translations/# Generated from sk.po, DO NOT EDIT/' > sk.cp1250.po
+	iconv -f ISO-8859-2 -t CP1250 sk.po | \
+		$(SED) -e 's/charset=[iI][sS][oO]-8859-2/charset=CP1250/' \
+			-e 's/# Original translations/# Generated from sk.po, DO NOT EDIT/' \
+			> sk.cp1250.po
 
 # Convert zh_CN.UTF-8.po to create zh_CN.po.
 zh_CN.po: zh_CN.UTF-8.po
 	rm -f zh_CN.po
-	iconv -f UTF-8 -t gb2312 zh_CN.UTF-8.po | \
-		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=gb2312/' -e 's/# Original translations/# Generated from zh_CN.UTF-8.po, DO NOT EDIT/' > zh_CN.po
+	iconv -f UTF-8 -t GB2312 zh_CN.UTF-8.po | \
+		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=GB2312/' \
+			-e 's/# Original translations/# Generated from zh_CN.UTF-8.po, DO NOT EDIT/' \
+			> zh_CN.po
 
 # Convert zh_CN.UTF-8.po to create zh_CN.cp936.po.
 # Set 'charset' to gbk to avoid that msfmt generates a warning.
 # This used to convert from zh_CN.po, but that results in a conversion error.
 zh_CN.cp936.po: zh_CN.UTF-8.po
 	rm -f zh_CN.cp936.po
-	iconv -f UTF-8 -t cp936 zh_CN.UTF-8.po | \
-		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=gbk/' -e 's/# Original translations/# Generated from zh_CN.UTF-8.po, DO NOT EDIT/' > zh_CN.cp936.po
+	iconv -f UTF-8 -t CP936 zh_CN.UTF-8.po | \
+		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=GBK/' \
+			-e 's/# Original translations/# Generated from zh_CN.UTF-8.po, DO NOT EDIT/' \
+			> zh_CN.cp936.po
 
 # Convert zh_TW.UTF-8.po to create zh_TW.po
 zh_TW.po: zh_TW.UTF-8.po
 	rm -f zh_TW.po
-	iconv -f UTF-8 -t big5 zh_TW.UTF-8.po | \
-		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=big5/' -e 's/# Original translations/# Generated from zh_TW.UTF-8.po, DO NOT EDIT/' > zh_TW.po
+	iconv -f UTF-8 -t BIG5 zh_TW.UTF-8.po | \
+		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=BIG5/' \
+			-e 's/# Original translations/# Generated from zh_TW.UTF-8.po, DO NOT EDIT/' \
+			> zh_TW.po
+
+
+# Convert zh_TW.UTF-8.po to create zh_TW.po with backslash characters
+# Requires doubling backslashes in the second byte.  Don't depend on big5corr,
+# it should only be compiled when zh_TW.po is outdated.
+
+#
+#  06.11.23, added by Restorer
+#  For more details, see:
+#  https://github.com/vim/vim/pull/3261
+#  https://github.com/vim/vim/pull/3476
+#  https://github.com/vim/vim/pull/12153
+#  (read all comments)
+#
+#  I checked the workability on the list of backslash characters
+#  specified in zh_TW.UTF-8.po. It works.
+#  But it is better to have someone native speaker check it.
+#
+
+#zh_TW.po: zh_TW.UTF-8.po
+#	@$(MAKE) big5corr
+#	rm -f zh_TW.po
+#	iconv -f UTF-8 -t BIG5 zh_TW.UTF-8.po | ./big5corr > zh_TW.po
+
+
+# 06.11.23, added by Restorer
+# see above in the zh_tw.po conversion section for backslashes.
+#big5corr: big5corr.c
+#	$(CC) -o big5corr big5corr.c
+
 
 # Convert ko.UTF-8.po to create ko.po.
 ko.po: ko.UTF-8.po
 	rm -f ko.po
-	iconv -f UTF-8 -t euc-kr ko.UTF-8.po | \
-		$(SED) -e 's/charset=UTF-8/charset=euc-kr/' \
-		    -e 's/# Korean translation for Vim/# Generated from ko.UTF-8.po, DO NOT EDIT/' \
-		    > ko.po
+	iconv -f UTF-8 -t EUC-KR ko.UTF-8.po | \
+		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=EUC-KR/' \
+			-e 's/# Original translations/# Generated from ko.UTF-8.po, DO NOT EDIT/' \
+			> ko.po
 
 # Convert ru.po to create ru.cp1251.po.
 ru.cp1251.po: ru.po
 	rm -f ru.cp1251.po
-	iconv -f utf-8 -t cp1251 ru.po | \
-		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=cp1251/' -e 's/# Original translations/# Generated from ru.po, DO NOT EDIT/' > ru.cp1251.po
+	iconv -f UTF-8 -t CP1251 ru.po | \
+		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=CP1251/' \
+			-e 's/# Original translations/# Generated from ru.po, DO NOT EDIT/' \
+			> ru.cp1251.po
 
 # Convert uk.po to create uk.cp1251.po.
 uk.cp1251.po: uk.po
 	rm -f uk.cp1251.po
-	iconv -f utf-8 -t cp1251 uk.po | \
-		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=cp1251/' -e 's/# Original translations/# Generated from uk.po, DO NOT EDIT/' > uk.cp1251.po
+	iconv -f UTF-8 -t CP1251 uk.po | \
+		$(SED) -e 's/charset=[uU][tT][fF]-8/charset=CP1251/' \
+			-e 's/# Original translations/# Generated from uk.po, DO NOT EDIT/' \
+			> uk.cp1251.po
 
 prefixcheck:
 	@if test "x" = "x$(prefix)"; then \
@@ -186,6 +236,7 @@ prefixcheck:
 clean: checkclean
 	rm -f core core.* *.old.po *.mo *.pot sjiscorr
 	rm -f LINGUAS vim.desktop gvim.desktop tmp_*desktop
+#	rm -f big5corr
 
 distclean: clean
 
@@ -231,7 +282,9 @@ gvim.desktop: gvim.desktop.in $(POFILES)
 	if command -v desktop-file-validate; then desktop-file-validate tmp_gvim.desktop; fi
 	mv tmp_gvim.desktop gvim.desktop
 
-update-po: $(LANGUAGES)
+# When updating ja.sjis.po there are a bunch of errors and a crash.
+# The files that are converted to a different encoding clearly state "DO NOT EDIT".
+update-po: $(MOFILES:.mo=)
 
 # Don't add a dependency here, we only want to update the .po files manually
 $(LANGUAGES):
diff --git a/src/po/README.txt b/src/po/README.txt
--- a/src/po/README.txt
+++ b/src/po/README.txt
@@ -30,10 +30,12 @@ The distributed files are generated on U
 on MS-Windows.  Download the gettext packages, for example from:
 
 	http://sourceforge.net/projects/gettext
+	or
+	https://mlocati.github.io/articles/gettext-iconv-windows.html
 
 You might have to do the commands manually.  Example:
 
-   cd c:\vim\vim81
+   cd c:\vim\vim91
    mkdir runtime\lang\ja\LC_MESSAGES
    msgfmt -o runtime\lang\ja\LC_MESSAGES\vim.mo src\po\ja.po
 
@@ -51,7 +53,7 @@ CREATING A NEW PO FILE
 We will use "xx.po" as an example here, replace "xx" with the name of your
 language.
 
-- Edit Makefile to add xx to LANGUAGES and xx.mo to MOFILES.
+- Edit Make_all.mak to add xx to LANGUAGES and xx.mo to MOFILES.
 - If you haven't done so already, run ./configure in the top vim directory
   (i.e. go up two directories) and then come back here afterwards.
 - Execute these commands:
diff --git a/src/po/README_mingw.txt b/src/po/README_mingw.txt
--- a/src/po/README_mingw.txt
+++ b/src/po/README_mingw.txt
@@ -20,7 +20,7 @@ The make utility must be run from the po
 First of all you must set the environment variable LANGUAGE to xx, where xx is
 the name of your language. You can do it from the command line or adding a
 line to your autoexec.bat file: set LANGUAGE=xx. You must also add your
-language to the Make_ming.mak file in the lines LANGUAGES, MOFILES, AND
+language to the Make_all.mak file in the lines LANGUAGES, MOFILES, AND
 POFILES.
 
 If you don't have a xx.po file, you must create it with the command:
diff --git a/src/po/README_mvc.txt b/src/po/README_mvc.txt
--- a/src/po/README_mvc.txt
+++ b/src/po/README_mvc.txt
@@ -14,6 +14,11 @@ expat can be found at:
 expat will install into its own directory.  You should copy libexpat.dll into
 the bin directory created from the gettext/libiconv packages.
 
+Or Michele Locati kindly provides precompiled binaries gettext 0.21 and
+iconv 1.16 for Windows on his site: 
+
+	https://mlocati.github.io/articles/gettext-iconv-windows.html
+
 First read the README.txt file in this directory for general remarks on
 translating Vim messages.
 
@@ -26,9 +31,9 @@ characters and you can find a list of th
 
 	http://www.geocities.com/click2speak/languages.html
 
-Another possibility is to use the gnuwin32 port of gettext. This is
+Another possibility is to use the GnuWin32 port of gettext. This is
 recommended especially if you use already gnuwin32 tools to gunzip, bunzip,
-patch etc. these files. You find the gnuwin32 version of gettext here:
+patch etc. these files. You find the GnuWin32 version of gettext here:
 
         http://gnuwin32.sourceforge.net/packages/gettext.htm
 
@@ -51,7 +56,7 @@ the installation.
 CREATING A NEW TRANSLATION
 
 When creating a new translation you must add your language code to the
-Make_mvc.mak file in the lines defining LANGUAGES and MOFILES.  To create the
+Make_all.mak file in the lines defining LANGUAGES and MOFILES.  To create the
 initial .po file for your language you must use the command:
 
 	make -f make_mvc.mak first_time
@@ -64,11 +69,11 @@ highlighting turned on then untranslated
 
 You will also need to edit the file names in the comments in the .po file.
 You need to remove the absolute directory specification (which has the form
-c:\vim61\src\).  You can do this in Vim with the following command with the
+c:\vim91\src\).  You can do this in Vim with the following command with the
 appropriate directory specification for where you have installed the Vim
 source:
 
-	%s/c:\\vim61\\src\\//g
+	%s/c:\\vim91\\src\\//g
 
 
 UPDATING A TRANSLATION
diff --git a/src/po/big5corr.c b/src/po/big5corr.c
new file mode 100644
--- /dev/null
+++ b/src/po/big5corr.c
@@ -0,0 +1,58 @@
+/*
+ * Simplistic program to correct Big5 inside strings.  When a trail byte is a
+ * backslash it needs to be doubled.
+ * Public domain.
+ */
+
+/*
+ * 06.11.23, added by Restorer:
+ * For more details, see:
+ * https://github.com/vim/vim/pull/3261
+ * https://github.com/vim/vim/pull/3476
+ * https://github.com/vim/vim/pull/12153
+ * (read all comments)
+ *
+ * I checked the workability on the list of backslash characters
+ * specified in zh_TW.UTF-8.po. It works.
+ * But it is better to have someone native speaker check it.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+	int
+main(int argc, char **argv)
+{
+	char buffer[BUFSIZ];
+	char *p;
+
+	while (fgets(buffer, BUFSIZ, stdin) != NULL)
+	{
+		for (p = buffer; *p != 0; p++)
+		{
+			if (strncmp(p, "charset=utf-8", 13) == 0
+				|| strncmp(p, "charset=UTF-8", 13) == 0)
+			{
+				fputs("charset=BIG-5", stdout);
+				p += 12;
+			}
+			else if (strncmp(p, "# Original translations", 23) == 0)
+			{
+				fputs("# Generated from zh_TW.UTF-8.po, DO NOT EDIT.", stdout);
+				while (p[1] != '\n')
+					++p;
+			}
+			else
+			{
+				if (*(unsigned char *)p >= 0xA1)
+				{
+					putchar(*p++);
+					if (*p == '\\')
+						putchar(*p);
+				}
+				putchar(*p);
+			}
+		}
+	}
+}
diff --git a/src/po/sjiscorr.c b/src/po/sjiscorr.c
--- a/src/po/sjiscorr.c
+++ b/src/po/sjiscorr.c
@@ -19,12 +19,12 @@ main(int argc, char **argv)
 			if (strncmp(p, "charset=utf-8", 13) == 0
 				|| strncmp(p, "charset=UTF-8", 13) == 0)
 			{
-				fputs("charset=cp932", stdout);
+				fputs("charset=CP932", stdout);
 				p += 12;
 			}
 			else if (strncmp(p, "# Original translations", 23) == 0)
 			{
-				fputs("# generated from ja.po, DO NOT EDIT", stdout);
+				fputs("# Generated from ja.po, DO NOT EDIT.", stdout);
 				while (p[1] != '\n')
 					++p;
 			}
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2127,
+/**/
     2126,
 /**/
     2125,