texi: warn against suffix-less info files

The warning being in the 'obsolete' category.  This is mostly to
ease transition to Automake-NG (see commit v1.12.1-392-ga0c7b6a),
and to discourage use of seldom-tested setups.

* automake.in (scan_texinfo_file): Warn against '@setfilename'
directives that specify suffix-less output info files.
* t/txinfo-without-info-suffix.sh: Adjust and enhance.
* t/txinfo-makeinfo-error-no-clobber.sh: No longer use suffix-less
info files in '@setfilename' directives.
* t/primary-prefix-valid-couples.sh: Likewise.
* t/txinfo-setfilename-repeated.sh: Likewise.
* t/txinfo-vtexi2.sh : Likewise.
* t/mdate2.sh: Likewise.
* NEWS: Update.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

1 files changed, 10 insertions, 10 deletions

diff --git a/t/txinfo-makeinfo-error-no-clobber.sh b/t/txinfo-makeinfo-error-no-clobber.sh
index cddbc1379..f4b7d01b1 100755
--- a/t/txinfo-makeinfo-error-no-clobber.sh
+++ b/t/txinfo-makeinfo-error-no-clobber.sh
@@ -29,7 +29,7 @@ mkdir sub
 
 cat > main.texi << 'END'
 \input texinfo
-@setfilename main
+@setfilename main.info
 @settitle main
 @node Top
 Hello walls.
@@ -46,15 +46,15 @@ $AUTOCONF
 $MAKE
 
 # Feign more info files.
-: > main-1
-: > sub/main-1
+: > main.info-1
+: > sub/main.info-1
 
 # Break main.texi.
 $sleep
 cp main.texi main.old
 cat > main.texi << 'END'
 \input texinfo
-@setfilename main
+@setfilename main.info
 @settitle main
 @node Top
 @unknown_macro{Hello walls.}
@@ -63,16 +63,16 @@ END
 
 # makeinfo will bail out, but we should conserve the old info files.
 $MAKE && exit 1
-test -f main
-test -f main-1
+test -f main.info
+test -f main.info-1
 
 # Restore main.texi, and break sub/main.texi.
 cp main.texi sub/main.texi
 mv main.old main.texi
 $MAKE && exit 1
-test -f main
-test ! -e main-1
-test -f sub/main
-test -f sub/main-1
+test -f main.info
+test ! -e main.info-1
+test -f sub/main.info
+test -f sub/main.info-1
 
 :