Less good file formats.
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- multi-line records (para vs fixed number etc.)
- Multi-type ascii records.
- DBM (not standard/often limits on length/requires serialization for complex results).
- Things which really require a lexer and parser.
- Notice that compilers (Perl,c) typically have these.
- C has many ambiguities in final layout of structures.
- Ambiguities limited to padding, length of data and pointers, and nuxi (data and pointers).
- Perl tries with h2ph. C2ph with gcc or berkely unix helps.
- MARC/PDF- At least well documented. Local processing possible.
- XBASE-Modules for its use. Local processing possible.
- Image file formats (ppm is best style of a bad bunch. Vector ones look best as pdf-style.)
- Serious compression (text compression with imbedded state machines).
- Perl- very flexible, trivial to use, but language-specific.