Author:

• Name: Anthony C. Howe
  Location: CA - Canada

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.

Primary files

• ant.c - entry source code
• Makefile - entry Makefile
• ant.orig.c - original source code
• ant.txt - ag man page in text format
• try.sh - script to try entry
• ant.alt.c - author provided unobfuscated code
• try.alt.sh - script to try unobfuscated code
• test.alt.mk - author provided test suite Makefile for unobfuscated code
• ants.txt - lyrics of the Ants Go Marching song
• ant.test.mk - test suite Makefile
• ant.alt.test.mk - test suite Makefile for unobfuscated code

Secondary files

• 1993_ant.tar.bz2 - download entry tarball
• README.md - markdown source for this web page
• .entry.json - entry summary and manifest in JSON
• .gitignore - list of files that should not be committed under git
• .path - directory path from top level directory
• index.html - this web page

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