# HG changeset patch
# User Simon Heimberg <simohe@besonet.ch>
# Date 1383641016 -3600
# Node ID ce5d711475a314608bea33c5acebc323e2122098
# Parent  c38c3fdc8b9317ba09e03ab09364c3800da7c50c
Makefile: do update on a temporary copy of a po file

This avoids having a half completed file (with a new timestamp) when msgmerge
has failed.

diff -r c38c3fdc8b93 -r ce5d711475a3 .hgignore
--- a/.hgignore	Thu Nov 07 15:24:23 2013 -0600
+++ b/.hgignore	Tue Nov 05 09:43:36 2013 +0100
@@ -1,6 +1,7 @@
 syntax: glob
 
 *.elc
+*.tmp
 *.orig
 *.rej
 *~
diff -r c38c3fdc8b93 -r ce5d711475a3 Makefile
--- a/Makefile	Thu Nov 07 15:24:23 2013 -0600
+++ b/Makefile	Tue Nov 05 09:43:36 2013 +0100
@@ -123,7 +123,10 @@
 	$(PYTHON) i18n/posplit i18n/hg.pot
 
 %.po: i18n/hg.pot
-	msgmerge --no-location --update $@ $^
+        # work on a temporary copy for never having a half completed target
+	cp $@ $@.tmp
+	msgmerge --no-location --update $@.tmp $^
+	mv -f $@~ $@
 
 .PHONY: help all local build doc clean install install-bin install-doc \
 	install-home install-home-bin install-home-doc dist dist-notests tests \