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2026-10-22fix(diagnostics): print each identical diagnostic once_ov4
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-21feat(driver): color diagnostics like gcc with -fdiagnostics-color_ov4
Add -fdiagnostics-color[=auto|always|never] and -fno-diagnostics-color. The default auto mode colors only a terminal stderr (TERM set and not dumb on Unix; a console that accepts VT sequences on Windows), so test harnesses, the desktop bundle and other pipes stay plain. Every diagnostic label now comes from cps::diagnosticPrefix, which emits gcc's default GCC_COLORS bytes: bold locus, bold red error/fatal error, bold magenta warning, bold cyan note. compilation terminated., runtime messages of the compiled program and lld output are unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-21feat(diagnostics): print source diagnostics in gcc file:line: layout_ov4
Lexer, parser, driver and codegen diagnostics now read "<path>:<line>: error: <message>" instead of "error: <message> at line N in <path>". The path is always printed as given on the command line. Call sites pass the bare message to cps::sourceError/sourceWarning, which carry printf format checking; reportError routes through the same helper. The suite iii harness parses the new layout and matches the reason against the message only. iii/template-class-pack-field passed only because its reason regex matched the case path, so it is now case-insensitive. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-17refactor(diag): file-qualified diagnostic locations_ov4
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>