ffe/NEWS at master · TimoSavi/ffe · GitHub

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ffe NEWS - user visible changes.

* Noteworthy changes in release 0.4.1 (2026-09-15)

** Relational comparison operators:
   - Added '<' (less than) and '>' (greater than) operators to -e / --expression.
   - Evaluated numerically when both field contents and target value are numbers;
     otherwise evaluated using string comparison (strcmp, or strcasecmp with -X).
   - Aborts with clear error message if multiple values or 'file:' inputs are
     specified for '<' or '>'.

** Guessing and Error Handling:
   - Suppressed ambiguous binary structure warning on stderr when text-based
     structure guessing subsequently succeeds.
   - Fixed heap buffer overread in vote_record().

** Build and Modernization:
   - Cleaned up compiler warnings (-Wall -Wextra) and modernized C code.
   - Added automated Markdown documentation generation (doc/ffe.md).
   - Added comprehensive automated test suite (make check) and test datasets.

* Noteworthy changes in release 0.4.0a (2025-03-21)

** Bug fixes:
   - Changed inline semantics to follow C99 standards.

* Noteworthy changes in release 0.4.0 (2024-10-31)

** New features:
   - Added 'does not contain' expression operator '#' to -e / --expression.

* Noteworthy changes in release 0.3.9b (2024-09-10)

** Bug fixes:
   - Fixed an infinite loop in eval_expression when an expression did not match.
   - Removed obsolete autoconf macros.

* Noteworthy changes in release 0.3.9a (2020-12-06)

** Bug fixes:
   - Fixed crash when variable-length and field-count were used together.

* Noteworthy changes in release 0.3.9 (2018-11-04)

** Bug fixes:
   - Fixed raw data printing with variable-length records.

* Noteworthy changes in release 0.3.8 (2018-03-18)

** New features:
   - Added support for printf-style conversion specification on output fields.

* Noteworthy changes in release 0.3.7 (2017-01-29)

** New features:
   - Built-in data anonymization engine with new option -A / --anonymize and
     configuration keyword 'anonymize' supporting MASK, RANDOM, NRANDOM, HASH,
     and NHASH methods.

* Noteworthy changes in release 0.3.6 (2015-12-29)

** New features:
   - Field contents formatting using external filter program ('filter').
   - Dynamic record length support ('variable_length').

* Noteworthy changes in release 0.3.5 (2015-05-14)

** Performance:
   - Hash-based lookup table for fast lookups in large datasets.

* Noteworthy changes in release 0.3.4 (2014-03-26)

** Bug fixes and features:
   - Proper reaping of child/zombie processes using SIG_IGN.
   - New output printing directive %C (padded and truncated to field length).

* Noteworthy changes in release 0.3.3 (2012-11-11)

** Features and performance:
   - Output option 'hex-caps' implemented.
   - Performance enhancements for large expression lists ('file:').

* Noteworthy changes in release 0.3.2 (2011-04-10)

** Features:
   - Input preprocessor support via FFEOPEN environment variable.
   - Whitespace-separated data printing with %t directive.

* Noteworthy changes in release 0.3.1 (2010-09-15)

** Features:
   - Hierarchical record levels ('level', 'group_header', 'group_trailer',
     'element_header', 'element_trailer') for XML/JSON nested trees.
   - Record keyword 'record-length' to ignore trailing undefined fields.

* Noteworthy changes in release 0.3.0 (2010-03-25)

** Features:
   - Multi-expression evaluation and combination for same field.
   - Case-insensitive expression matching with option -X / --casecmp.

* Initial release 0.1.0 (2006-02-28)