Don't build/install non-UTF-8 and encoding-converted locales

Currently a lot of the .po locale files are generated using iconv to
different encodings. This is only necessary if the version of Vim does
not have iconv and cannot dynamically convert encoding, which isn't the
case for MacVim. Furthermore, MacVim should only work in UTF-8 anyway,
so it's not useful to have all the other non-UTF-8 locales (e.g.
zh_CN.cp936.po) being built and bundled together, as they make the build
process more complicated and bulk up the binary size of the app bundle.

Simply modify the Makefile to not install / build any of the duplicate
locale files. For locales like ko/zh_CN/zh_TW, where the "base" version
ko.po is in a non-UTF-8 locale and converted from a ko.UTF-8.po, we keep
only the ko.UTF-8.po version, but during install we install the folder
as "ko" instead of "ko.UTF-8". This way, if someone somehow set
LANG=ko_KR, it will still work instead of having to set
LANG=ko_KR.UTF-8.

Currently, pl.po is an odd one out because pl.UTF-8.po is actually
generated from pl.po, instead of the other way round. We just use pl.po
since that's the source version, instead of using the generated UTF-8
one for simplicity (MacVim can handle it fine).

Saved ~2 MB in the app bundle, and ~1MB in the generated dmg.

Author: ychin

src/po/Make_all.mak

@@ -6,7 +6,6 @@ LANGUAGES = \
 		af \
 		ca \
 		cs \
-		cs.cp1250 \
 		da \
 		de \
 		en_GB \
@@ -17,40 +16,49 @@ LANGUAGES = \
 		ga \
 		it \
 		ja \
-		ja.euc-jp \
-		ja.sjis \
-		ko \
 		ko.UTF-8 \
 		lv \
 		nb \
 		nl \
 		no \
 		pl \
-		pl.UTF-8 \
-		pl.cp1250 \
 		pt_BR \
 		ru \
-		ru.cp1251 \
 		sk \
-		sk.cp1250 \
 		sr \
 		sv \
 		tr \
 		uk \
-		uk.cp1251 \
 		vi \
-		zh_CN \
 		zh_CN.UTF-8 \
-		zh_CN.cp936 \
-		zh_TW \
 		zh_TW.UTF-8 \
 
+# MacVim: Don't bundle non-UTF-8 or encoding converted locale files as we always have iconv
+		#cs.cp1250 \
+		#ja.euc-jp \
+		#ja.sjis \
+		#ko \
+		#pl.cp1250 \
+		#pl.UTF-8 \
+		#ru.cp1251 \
+		#sk.cp1250 \
+		#uk.cp1251 \
+		#zh_CN \
+		#zh_CN.cp936 \
+		#zh_TW \
+
+
+# MacVim: We removed the non-UTF-8 base locales for these, so we upgrade the
+# <locale>.UTF-8 ones as base locales.
+LANGUAGES_UTF8_ONLY = \
+		ko \
+		zh_CN \
+		zh_TW \
 
 POFILES = \
 		af.po \
 		ca.po \
 		cs.po \
-		cs.cp1250.po \
 		da.po \
 		de.po \
 		en_GB.po \
@@ -61,34 +69,37 @@ POFILES = \
 		ga.po \
 		it.po \
 		ja.po \
-		ja.euc-jp.po \
-		ja.sjis.po \
-		ko.po \
 		ko.UTF-8.po \
 		lv.po \
 		nb.po \
 		nl.po \
 		no.po \
 		pl.po \
-		pl.UTF-8.po \
-		pl.cp1250.po \
 		pt_BR.po \
 		ru.po \
-		ru.cp1251.po \
 		sk.po \
-		sk.cp1250.po \
 		sr.po \
 		sv.po \
 		tr.po \
 		uk.po \
-		uk.cp1251.po \
 		vi.po \
-		zh_CN.po \
 		zh_CN.UTF-8.po \
-		zh_CN.cp936.po \
-		zh_TW.po \
 		zh_TW.UTF-8.po \
 
+# MacVim: Don't bundle non-UTF-8 or encoding converted locale files as we always have iconv
+		#cs.cp1250.po \
+		#ja.euc-jp.po \
+		#ja.sjis.po \
+		#ko.po \
+		#pl.cp1250.po \
+		#pl.UTF-8.po \
+		#ru.cp1251.po \
+		#sk.cp1250.po \
+		#uk.cp1251.po \
+		#zh_CN.po \
+		#zh_CN.cp936.po \
+		#zh_TW.po \
+
 
 MOFILES = \
 		af.mo \
@@ -123,25 +134,26 @@ MOFILES = \
 
 
 MOCONVERTED = \
-		cs.cp1250.mo \
-		ja.euc-jp.mo \
-		ja.sjis.mo \
-		ko.mo \
-		pl.UTF-8.mo \
-		pl.cp1250.mo \
-		ru.cp1251.mo \
-		sk.cp1250.mo \
-		uk.cp1251.mo \
-		zh_CN.mo \
-		zh_CN.cp936.mo \
-		zh_TW.mo \
+
+# MacVim: Don't bundle non-UTF-8 or encoding converted locale files as we always have iconv
+		#cs.cp1250.mo \
+		#ja.euc-jp.mo \
+		#ja.sjis.mo \
+		#ko.mo \
+		#pl.cp1250.mo \
+		#pl.UTF-8.mo \
+		#ru.cp1251.mo \
+		#sk.cp1250.mo \
+		#uk.cp1251.mo \
+		#zh_CN.mo \
+		#zh_CN.cp936.mo \
+		#zh_TW.mo \
 
 
 CHECKFILES = \
 		af.ck \
 		ca.ck \
 		cs.ck \
-		cs.cp1250.ck \
 		da.ck \
 		de.ck \
 		en_GB.ck \
@@ -152,31 +164,34 @@ CHECKFILES = \
 		ga.ck \
 		it.ck \
 		ja.ck \
-		ja.euc-jp.ck \
-		ja.sjis.ck \
 		ko.UTF-8.ck \
-		ko.ck \
 		lv.ck \
 		nb.ck \
 		nl.ck \
 		no.ck \
-		pl.UTF-8.ck \
 		pl.ck \
-		pl.cp1250.ck \
 		pt_BR.ck \
 		ru.ck \
-		ru.cp1251.ck \
 		sk.ck \
-		sk.cp1250.ck \
 		sr.ck \
 		sv.ck \
 		tr.ck \
 		uk.ck \
-		uk.cp1251.ck \
 		vi.ck \
 		zh_CN.UTF-8.ck \
-		zh_CN.ck \
-		zh_CN.cp936.ck \
 		zh_TW.UTF-8.ck \
-		zh_TW.ck \
+
+# MacVim: Don't bundle non-UTF-8 or encoding converted locale files as we always have iconv
+		#cs.cp1250.ck \
+		#ja.euc-jp.ck \
+		#ja.sjis.ck \
+		#ko.ck \
+		#pl.cp1250.ck \
+		#pl.UTF-8.ck \
+		#ru.cp1251.ck \
+		#sk.cp1250.ck \
+		#uk.cp1251.ck \
+		#zh_CN.ck \
+		#zh_CN.cp936.ck \
+		#zh_TW.ck \
 

src/po/Makefile

@@ -55,6 +55,16 @@ install: $(MOFILES) $(MOCONVERTED)
 	    $(INSTALL_DATA) $$lang.mo $$dir/$(PACKAGE).mo; \
 	    chmod $(FILEMOD) $$dir/$(PACKAGE).mo; \
 	  fi; \
+	done; \
+	# MacVim: We remove non-UTF-8 locales as it does not make sense to ship \
+	# them on macOS. To make sure the base locales like "zh_TW" still works, we \
+	# move them from the encoding-specific ones like "zh_TW.UTF-8" to "zh_TW"
+	for lang_utf8_only in $(LANGUAGES_UTF8_ONLY); do \
+	  dir=$(LOCALEDIR)/$$lang_utf8_only; \
+	  if test -x "$$dir"; then \
+	    rm -rf "$$dir"; \
+	  fi; \
+	  mv "$$dir.UTF-8" "$$dir"; \
 	done
 
 uninstall: