std-gnu11: Support Autoconf versions < 2.64

While testing with Autoconf 2.63, I noticed this error: $ autoconf configure:5805: error: possibly undefined macro: _AC_DO_LIMIT If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. configure:5805: error: possibly undefined macro: AS_ME

Re: minimum supported Autoconf and Automake versions

Paul Eggert wrote: > Bruno Haible wrote: > > I would therefore propose to assume autoconf >= 2.63 and automake >= 1.11. > > Sounds good to me, and thanks for looking into this. Done as follows: 2018-10-22 Bruno Haible Assume Autoconf >= 2.63. * DEPENDENCIES: Mention the requi

Fix failure of 'gnulib-tool --create-testdir' with all modules

2018-10-22 Bruno Haible Fix failure of 'gnulib-tool --create-testdir' with all modules. * gnulib-tool (func_create_testdir): Exclude 'timevar' module. diff --git a/gnulib-tool b/gnulib-tool index c639f5a..3c27c8a 100755 --- a/gnulib-tool +++ b/gnulib-tool @@ -5980,10 +5980,11 @

[PATCH 1/6] dfa: remove unneeded code

Hi, These are a series of patches to improve the performance of dfa. We can speed-up dfa by improving memory accessibility etc. The following is the case that is particularly effective. $ ( seq 10 | sed 's/$/ abcdefg hijklmn opqrstu vwxyz/'; echo XX. ) >in (Before) $ time -p env LC_AL