Files
Landon Curt Noll f64f244ba6 update due to recent commits
The largest change was due to modifying `ioccc.css`
that resulted in all year and entry tarballs being modified.

Ran `make update` to perform the above.
2025-11-25 22:42:46 -08:00
..
2025-11-25 22:42:46 -08:00
2023-03-17 08:27:55 -07:00
2023-07-06 21:49:38 -07:00
2023-11-09 11:47:24 -08:00
2024-01-14 10:50:02 -08:00

To build:

    make all

The author provided an unobfuscated version. See Alternate code below.

Bugs and (Mis)features:

The current status of this entry is:

STATUS: INABIAF - please DO NOT fix

For more detailed information see 1993/ant in bugs.html.

To use:

    ./ant 'ERE' [file ...]

Try:

    ./try.sh

Alternate code:

The ant.alt.c is an unobfuscated version provided by the author. You can look at this code if you want some clues in how it works.

Alternate build:

If you wish to build this deobfuscated version, you can do so like:

    make alt

Alternate use:

Use ant.alt like you would ant above.

Alternate try:

    ./try.alt.sh

Judges' remarks:

See the author's POSIX P1003.2-like documentation file ant.txt for more information.

This program demonstrates that POSIX doesn't guarantee readability. :-)

Author's remarks:

Some of the features of my entry are:

  • "Lengthy" POSIX.2 style specification and manual :) :)
  • Useful subset of POSIX.2 Extended Regular Expressions.
  • Recursive ERE parser/compiler that generates an NFA railroad.
  • Lazy NFA to DFA evaluation to improve performance speed.
  • Code tested on a variety of platforms.
  • Make driven test script.
  • Can be compiled with ANSI or K&R C.
  • Not a toy, but actually useful and usable on systems that use DOS.
  • See also ant.txt.