m4 ChangeLog doc/m4.texinfo src/input.c [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      06/10/25 20:54:39

Modified files:
        .              : ChangeLog 
        doc            : m4.texinfo 
        src            : input.c 

Log message:
        Redo location tracking.  Instead of having just files track the
        line to return to when popping input, now all input blocks track
        their current line.
        * src/input.c (INPUT_STRING_WRAP, INPUT_FILE_INIT): No longer
        needed.
        (input_block): Have line and file storage for all input types, and
        rename some members.
        (input_change): New global flag.
        (push_file, push_macro, push_string_init, push_wrapup): Store
        location.
        (push_string_finish, pop_input, pop_wrapup): Notice changes in
        input blocks.
        (peek_input): Adjust to new member names.
        (next_char, next_char1): Adjust location if needed.
        (skip_line): Simplify restoring location.
        * doc/m4.texinfo (Location): Augment the test to catch line
        location of expansion of multi-line arguments.
        Reported by Stepan Kasal.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/m4/ChangeLog?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.203&r2=1.1.1.1.2.204
http://cvs.savannah.gnu.org/viewcvs/m4/doc/m4.texinfo?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.92&r2=1.1.1.1.2.93
http://cvs.savannah.gnu.org/viewcvs/m4/src/input.c?cvsroot=m4&only_with_tag=branch-1_4&r1=1.1.1.1.2.27&r2=1.1.1.1.2.28