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Partial m4sugar merge from autoconf: builtins, version.m4.

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* data/m4sugar/m4sugar.m4 (changeword): Nuke.
(m4_prepend): Remove, as it is unused and inherently quadratic,
whereas m4_append is linear in newer m4.
(m4_mkstemp): New builtin.
(m4_symbols): Make rename conditional.
(m4_version_prereq): Ensure fatal error if used in bison, which
intentionally lacks version.m4.

Signed-off-by: Eric Blake <[email protected]>
This commit is contained in:
Eric Blake committed 2008-08-05 06:39:55 -06:00
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commit dfcc595944
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+32 -18
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2008-08-05 Eric Blake <[email protected]>
Partial m4sugar merge from autoconf: builtins, version.m4.
* data/m4sugar/m4sugar.m4 (changeword): Nuke.
(m4_prepend): Remove, as it is unused and inherently quadratic,
whereas m4_append is linear in newer m4.
(m4_mkstemp): New builtin.
(m4_symbols): Make rename conditional.
(m4_version_prereq): Ensure fatal error if used in bison, which
intentionally lacks version.m4.
Fix comments in m4sugar.
* data/m4sugar/m4sugar.m4: Comment changes, borrowed from autoconf.