tree 3372e5534c38521ecfd9c3b93672fc8d51b4b134
parent bc9b4d7bf16c7571efe03debaf2c6f1d52a6a08d
author Eric Blake <ebb9@byu.net> 1209849743 -0600
committer Eric Blake <ebb9@byu.net> 1210042463 -0600

Stage 22: allow builtin token concatenation outside $@.

* m4/m4module.h (m4_is_arg_composite): New prototype.
(m4_symbol_value_copy): Change return type.
(m4_arg_text): Add parameter.
(M4ARG): Adjust callers.
* m4/m4private.h: Adjust comments.
* m4/symtab.c (m4_symbol_value_copy): Detect when builtins are
flattened.
* m4/input.c (init_builtin_token): Add parameter, and allow
concatenating builtins.
(m4__next_token): Adjust caller.
* m4/macro.c (m4_is_arg_composite): New function.
(expand_argument): Allow builtin concatenation.
(m4_arg_text): Add parameter.
(m4__arg_adjust_refcount, m4__arg_print): Adjust callers.
(m4_arg_equal): Fix comparison of builtin tokens.
* modules/m4.c (define, pushdef): Warn when flattening builtins.
* doc/m4.texinfo (Define): Remove dead comment.
(Defn): Update to reflect code changes.
* tests/builtins.at (defn): Remove xfail.
* NEWS: Document this change.

Signed-off-by: Eric Blake <ebb9@byu.net>