bug#11529: redoing gnulib import to avoid 8+3 glitches

[Paul Eggert <eggert@cs.ucla.edu>]

On 05/07/2012 11:28 PM, Paul Eggert wrote:
> I'll look at
> reworking the 8+3-related build-procedure code that cost me time
> on Friday, so that it's less likely to do so in the future.

Here's a proposed patch to do that.
I've tested it on GNU/Linux, though not on DOS.

=== modified file 'ChangeLog'
--- ChangeLog	2012-05-21 02:33:13 +0000
+++ ChangeLog	2012-05-21 03:00:32 +0000
@@ -1,5 +1,14 @@
 2012-05-21  Paul Eggert  <eggert@cs.ucla.edu>
 
+	Use full name for m4/gnulib-comp.m4, except on DOS.
+	Previously the file was named m4/gl-comp.m4 on all hosts,
+	even though the file's name in gnulib is m4/gnulib-comp.m4.
+	This had a problem when merging from gnulib, as the code temporarily
+	renamed it to the full name, causing problems when interrupted.
+	With this change, the file ordinarily has its full name, except
+	that on DOS it has the shorter name.
+	* m4/gnulib-comp.m4: Rename from m4/gl-comp.m4.
+
 	Make merging from gnulib a script, not a makefile action.
 	Putting it in a makefile has some problems with reflection, as
 	merging from gnulib updates 'configure', which can update the makefile.

=== modified file 'admin/ChangeLog'
--- admin/ChangeLog	2012-05-21 02:33:13 +0000
+++ admin/ChangeLog	2012-05-21 03:00:32 +0000
@@ -1,5 +1,8 @@
 2012-05-21  Paul Eggert  <eggert@cs.ucla.edu>
 
+	Use full name for m4/gnulib-comp.m4, except on DOS.
+	* merge-gnulib: Leave m4/gnulib-comp.m4's name alone.
+
 	Make merging from gnulib a script, not a makefile action.
 	* merge-gnulib: New script, with actions moved here from
 	../Makefile.in.

=== modified file 'admin/merge-gnulib'
--- admin/merge-gnulib	2012-05-21 02:33:13 +0000
+++ admin/merge-gnulib	2012-05-21 03:00:32 +0000
@@ -79,10 +79,8 @@
   exit 1
 }
 
-cp -- "$src"m4/gl-comp.m4 "$src"m4/gnulib-comp.m4 &&
 "$gnulib_srcdir"/gnulib-tool --dir="$src" $GNULIB_TOOL_FLAGS $GNULIB_MODULES &&
 rm -- "$src"m4/gnulib-cache.m4 "$src"m4/warn-on-use.m4 &&
-mv -- "$src"m4/gnulib-comp.m4 "$src"m4/gl-comp.m4 &&
 cp -- "$gnulib_srcdir"/build-aux/texinfo.tex "$src"doc/misc &&
 cp -- "$gnulib_srcdir"/build-aux/move-if-change "$src"build-aux &&
 autoreconf -i -I m4 -- ${src:+"$src"}

=== renamed file 'm4/gl-comp.m4' => 'm4/gnulib-comp.m4'
=== modified file 'msdos/ChangeLog'
--- msdos/ChangeLog	2012-05-19 18:04:49 +0000
+++ msdos/ChangeLog	2012-05-21 03:00:32 +0000
@@ -1,3 +1,10 @@
+2012-05-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Use full name for m4/gnulib-comp.m4, except on DOS.
+	* INSTALL: Describe how to rename m4/gnulib-comp.m4 to m4/gl-comp.m4
+	when unpacking.
+	* sedlibcf.inp: Substitute the shorter name for the longer.
+
 2012-05-19  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* sed2v2.inp (HAVE_MBLEN): Remove.

=== modified file 'msdos/INSTALL'
--- msdos/INSTALL	2012-01-19 07:21:25 +0000
+++ msdos/INSTALL	2012-05-21 03:00:32 +0000
@@ -73,6 +73,10 @@
 67-character limit on the file-name length imposed by DOS filesystems.
 When prompted by `djtar' for a different name for these files, just
 press [Enter] to skip them: they are not needed for the DJGPP build.
+Similarly, unpacking complains that the file names m4/gnulib-comp.m4
+and m4/gnulib-common.m4 clash when truncated to DOS 8.3 limits; when
+prompted by 'djtar' for an alternate name for m4/gnulib-comp.m4,
+choose the name m4/gl-comp.m4.
 
 If you want to print international characters, install the intlfonts
 distribution.  For this, create a directory called `fonts' under the

=== modified file 'msdos/sedlibcf.inp'
--- msdos/sedlibcf.inp	2012-01-05 09:46:05 +0000
+++ msdos/sedlibcf.inp	2012-05-21 03:00:32 +0000
@@ -19,4 +19,5 @@
 #
 # ----------------------------------------------------------------------
 s/c++defs/cxxdefs/g
+s/gnulib-comp\.m4/gl-comp.m4/g
 s/\([a-zA-Z0-9_]*\)\.in\.h/\1.in-h/g