remove prototypes with no matching function and externs with no var
partly checked by millert@

Add -E flag (make warnings fatal), following the behavior of GNU m4 1.4.9+
Help and direction millert@ espie@ anton@ deraadt@

ok espie@

adjust to ohash being in libutil now, and to the interface changes.
fix potential integer overflows in memory allocation (mostly for pedagogical
purposes, these are unlikely to overflow in practice)

adjust to ohash being in libutil now, and to the interface changes.
fix potential integer overflows in memory allocation (mostly for pedagogical
purposes, these are unlikely to overflow in practice)
move the rest of lst.lib stuff into its own directory.

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check for integer overflows in custom allocs, okay jca@

new m4 -g stuff:
- expr(`4**3')
- include(`hey I am not there') keeps going.

work with Baptiste Daroussin, who had the idea but didn't nail all details
right.

okay otto@, miod@

zap dead stuff
from Michael W. Bombardieri

Remove stray spaces. No code change.

Support the -P option from gnu m4, which prefixes builtins with the
string m4_. Feedback from jmc@, Tobias Ulmer, Matthew Dempsky - thanks!
ok espie@

use unsigned char for buffers, allow differentiating between EOF and y".

okay otto@

not yet, committed too much

argument parsing should only skip spaces outside of parenthesis.
Inside matching parenthesis, keep spaces as is (use chrsave instead of
pbstr, since there's no way it can be a further macro expansion

argument parsing should only skip spaces outside of parenthesis.
Inside matching parenthesis, keep spaces as is (use chrsave instead of
pbstr, since there's no way it can be a further macro expansion).
Fixes a long-standing issue with autoconf ( --option -> --option),
matches other m4 than gnum4

okay millert@, fries@

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add limited support for format builtin in gnu-m4 mode, because I'm fed
up of patching it away in various autoconf derivatives.

okay miod@

report function m4errx, that shows app-specific data (filename/linenumber)
before the error message. Use it to simplify code.

okay miod@

use stdint.h where appropriate. okay millert@

finally make our m4 SusV3-compliant.

- changecom and changequote have a simple definition (that matches gnu-m4,
coincidentally, so we no longer need two distinct modes for these)

- off-by-one bug i

finally make our m4 SusV3-compliant.

- changecom and changequote have a simple definition (that matches gnu-m4,
coincidentally, so we no longer need two distinct modes for these)

- off-by-one bug in -s, this finally works.

- reorder main parser loop, so that we can use alphabetic constructs in
quotes/comments.

- rename putback to pushback, this matches comments, and makes more sense.

- more uniform (and updated) description of changequote/changecom.

- new, systematic regression tests of comments/quotes.

- framework to test -s: one perl script to reconstitute `full' files with
all line numbers, so that we can verify the output without needing a
complete match.

okay otto@, fries@

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fix a few minor compatibility issues.
- let eval() handle a base and number of digits, like it's advertized to.
- in gnu-mode, undivert can take file names as arguments.
- in gnu-mode, map can handle

fix a few minor compatibility issues.
- let eval() handle a base and number of digits, like it's advertized to.
- in gnu-mode, undivert can take file names as arguments.
- in gnu-mode, map can handle reversed charsets.

Suggestions and okay otto@, mostly prompted by looking at the regress
tests in newer gnu-m4.

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let m4wrap handle multiple wraps, both in normal and gnu-mode.
based on Noah Misch's bug report.
okay otto, jmc.

Modify xalloc so that it also takes err(3)-like arguments.
Write an xrealloc wrapper that works the same way, and use it as well.

People who feel like it may want to add more explicit error messages

Modify xalloc so that it also takes err(3)-like arguments.
Write an xrealloc wrapper that works the same way, and use it as well.

People who feel like it may want to add more explicit error messages to
all the places m4 can fail allocating memory...

okay tedu@

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Fold trace status into the single hash table that's left.
Inline some macros/functions for speed.
So, this achieves the goal of one single lookup for macro/trace status,
which does speed up m4 in par

Fold trace status into the single hash table that's left.
Inline some macros/functions for speed.
So, this achieves the goal of one single lookup for macro/trace status,
which does speed up m4 in partial tracing situations somewhat.
This does also speed up m4 in large pushdef situations, since it no longer
has to lookup large chains of macros.

okay millert@

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add a flag for each macro name that records built-in status.
Fold built-in lookup into normal lookup.
okay millert@

replace old hash structure with open hashing.
make the stack structure of macro definitions explicit.
okay millert@

Make the trace status of a macro an actual argument that gets pushed
in the frame for the macro expansion.

(This will allow one single lookup to grab the macro definition and
the trace status)

okay

Make the trace status of a macro an actual argument that gets pushed
in the frame for the macro expansion.

(This will allow one single lookup to grab the macro definition and
the trace status)

okay millert@

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clean up internal lookup interface:
define an interface with explicit define/pushdef/popdef... and use it.
That way, most details of the hashtable are no longer visible.

okay millert@

- store builtin name as definition for builtin macros.
this removes the need for code->name conversion, in exchange for
systematically testing the definition type, since we can no longer
rely on the

- store builtin name as definition for builtin macros.
this removes the need for code->name conversion, in exchange for
systematically testing the definition type, since we can no longer
rely on the defn being NULL.

- commonnalize the builtin-detection code, so that we can use it for pushdef
as well with define, so that pushdef handles builtins correctly as well.

okay fries@, millert@.

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switch from linked list to hash table for traced macros.
speeds up recent autoconf somewhat, since it traces a large set
of individual macro.

(more rework of m4 internal interfaces to unify lookup t

switch from linked list to hash table for traced macros.
speeds up recent autoconf somewhat, since it traces a large set
of individual macro.

(more rework of m4 internal interfaces to unify lookup tables in order)

okay fries@

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