m4 ChangeLog src/builtin.c src/m4.c src/m4.h [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      07/10/09 16:51:10

Modified files:
        .              : ChangeLog 
        src            : builtin.c m4.c m4.h 

Log message:
        Cache regex compilation for another autoconf speedup.
        
        * src/m4.h (free_macro_sequence): Rename...
        (free_regex): ...to this.
        * src/m4.c (main): Update caller.
        * src/builtin.c (REGEX_CACHE_SIZE, m4_regex, regex_cache): New
        declarations.
        (compile_pattern): New function; cache recent regexes.
        (free_regex): Rename, and clean up additional memory.
        (m4_regexp, m4_patsubst): Use new function.
        
        Signed-off-by: Eric Blake <address@hidden>

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/m4/ChangeLog?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.292&r2=1.1.1.1.2.293
http://cvs.savannah.gnu.org/viewcvs/m4/src/builtin.c?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.64&r2=1.1.1.1.2.65
http://cvs.savannah.gnu.org/viewcvs/m4/src/m4.c?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.49&r2=1.1.1.1.2.50
http://cvs.savannah.gnu.org/viewcvs/m4/src/m4.h?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.45&r2=1.1.1.1.2.46