[PATCH] support texinfo-7.0

[Jun T <takimoto-j@xxxxxxxxxxxxxxxxx>]

texinfo-7.0 was released about a half year ago, and Arch Linux already
uses it. But with 7.0, 'make html' gives the following warning:

texi2any -c TEXI2HTML=1 --output . --ifinfo --split=chapter --node-files \
             --init-file texi2html.conf ./zsh.texi
texi2any: warning: error loading ./texi2html.conf: Undefined subroutine &Texinfo::Config::set_from_init_file called at ./texi2html.conf line 1.
Compilation failed in require at /usr/share/texinfo/Texinfo/Config.pm line 130.

It seems set_from_init_file was renamed texinfo_set_from_init_file.


diff --git a/Doc/Makefile.in b/Doc/Makefile.in
index 136b080d6..dabe11fe3 100644
--- a/Doc/Makefile.in
+++ b/Doc/Makefile.in
@@ -43,6 +43,7 @@ TEXI2DVI = @TEXI2DVI@
 DVIPS = dvips
 TEXI2PDF  = @TEXI2PDF@
 TEXI2HTML = @TEXI2HTML@
+SET_TEXI2ANY_VAR = @SET_TEXI2ANY_VAR@
 PAPERSIZE = @PAPERSIZE@
 
 .SUFFIXES: .yo .1
@@ -266,7 +267,7 @@ texi2html.conf: $(sdir_top)/Config/version.mk
 	d=`echo $(VERSION_DATE)`; \
 	v="<font size=\"-1\">Zsh version $(VERSION), released on $$d.</font>"; \
 	case '$(TEXI2HTML)' in \
-	  *texi2any*) echo "set_from_init_file('PRE_BODY_CLOSE','$$v');" ;; \
+	  *texi2any*) echo "$(SET_TEXI2ANY_VAR)('PRE_BODY_CLOSE','$$v');" ;; \
 	  *) echo "\$$PRE_BODY_CLOSE = '$$v';" ;; \
 	esac > $@
 
diff --git a/configure.ac b/configure.ac
index 4710d1659..ba76f9a60 100644
--- a/configure.ac
+++ b/configure.ac
@@ -623,7 +623,12 @@ fi
 
 if test x"$TEXI2HTML" = xtexi2any; then
   TEXI2HTML='texi2any -c TEXI2HTML=1'
+  case `texi2any --version 2>/dev/null | sed -e 's/^.*) *//' -e 1q` in
+    [[1-6]].*) SET_TEXI2ANY_VAR=set_from_init_file ;;
+    *) SET_TEXI2ANY_VAR=texinfo_set_from_init_file ;;
+  esac
 fi
+AC_SUBST(SET_TEXI2ANY_VAR)
 
 case "$LC_PAPER" in
   ??_US*) PAPERSIZE=us ;;