interpreter: implement FIELDWIDTHS fixed-width splitting by Franklin-Qi · Pull Request #132 · uutils/awk

Franklin-Qi · 2026-10-09T07:13:34Z

Replace the FIELDWIDTHS todo with gawk-compatible width/skip//skip: parsing and record splitting, plus regression tests for the manual cases.

Closes: #123

github-actions · 2026-10-09T07:16:17Z

GNU awk testsuite comparison:

Test results comparison:
  Current:   TOTAL: 666 / PASSED: 96 / FAILED: 472 / SKIPPED: 98
  Reference: TOTAL: 666 / PASSED: 90 / FAILED: 478 / SKIPPED: 98

Changes from main branch:
  TOTAL: +0
  PASSED: +6
  FAILED: -6

Test improvements (6):
  + fieldwdth
  + fwtest
  + fwtest2
  + fwtest4
  + fwtest5
  + fwtest7

Parse FIELDWIDTHS once on assignment (tokenized blanks / skip:width), cache designators for record splits, fatal on invalid specs, and match gawk when a skip past EOF still yields an empty field (including *). Closes: uutils#123

github-actions · 2026-10-10T10:15:09Z

GNU awk testsuite comparison:

Test results comparison:
  Current:   TOTAL: 666 / PASSED: 96 / FAILED: 472 / SKIPPED: 98
  Reference: TOTAL: 666 / PASSED: 90 / FAILED: 478 / SKIPPED: 98

Changes from main branch:
  TOTAL: +0
  PASSED: +6
  FAILED: -6

Test improvements (6):
  + fieldwdth
  + fwtest
  + fwtest2
  + fwtest4
  + fwtest5
  + fwtest7