gnulib-tool: unterminated substitute pattern

[Perrog]

Hi!

I get a strange sed warning/error of "unterminated substitute pattern"
while using gnulib-tool. I'm building bison and the bootstrapping
process uses gnulib-tool. I manage to build bison completely, even of
this warning occur. However, I wanted to check what gnulib-tool claims
over. This is the gnulib-tool command

$ rm -fr .#bootmp .#bootmp2 && mkdir .#bootmp .#bootmp2
$ /src/gnu-tools/gnulib/gnulib-tool --import --no-changelog --aux-dir
.#bootmp/build-aux --doc-base .#bootmp/doc --lib libbison --m4-base
.#bootmp/m4/ --source-base .#bootmp/lib/ --tests-base .#bootmp/tests
--local-dir gl --import argmatch config-h configmake dirname error
extensions fopen-safer getopt gettext hash inttypes malloc mbswidth
obstack quote quotearg stdbool stpcpy strerror strtoul strverscmp
unistd unistd-safer unlocked-io verify xalloc xalloc-die xstrndup

Module list with included dependencies:
 argmatch
 config-h
 configmake
 dirname
 error
 exit
 exitfail
 extensions
 fopen-safer
 getopt
 gettext
 gettext-h
 hash
 havelib
 inttypes
 malloc
 mbswidth
 obstack
 quote
 quotearg
 stdbool
 stdint
 stpcpy
 strerror
 strndup
 strnlen
 strtol
 strtoul
 strverscmp
 unistd
 unistd-safer
 unlocked-io
 verify
 wcwidth
 xalloc
 xalloc-die
 xstrndup

sed: 4: "/\\$/{
           :a
        ...": unterminated substitute pattern

I tracked down the failure to a regular expression in
"func_get_automake_snippet"  in gnulib-tool:906. This is the
expression.

     # Synthesize an EXTRA_DIST augmentation.
     sed_combine_lines='/\\$/{
         :a
       N
       s/\\\
//
       s/\\$/\\/
       ta
     }'

I can't say if this is an illegal regular expression, but changing it
to the expression below removes the problem. Be aware of my limited
experience with this.

     sed_combine_lines='/\\$/{
         :a
       N
       s/\\[\n]//
       s/\\$/\\/
       ta
     }'

Regards,
Roger Persson


##
# System info:
##

# The man page for my sed is dated July 17, 2004.

$ /src/gnu-tools/gnulib/gnulib-tool --version
/src/gnu-tools/gnulib/gnulib-tool (GNU gnulib) 2006-10-23
<copyleft cutted>

$ uname -v
Darwin Kernel Version 8.8.0: Fri Sep  8 17:18:57 PDT 2006;
root:xnu-792.12.6.obj~1/RELEASE_PPC


-- EOF