enabling runtime argument checking for free (part 3) #492
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now available, this when provided is used by the functions function_bind_variables, function_run, argument_error allowing the checking of arguments that otherwise cannot happen
ALWAYS, LEAVES, NOCARE, NOTIME, NOTFILE, NOUPDATE, TEMPORARY, ISFILE, FAIL_EXPECTED, RMOLD
now available; notice that documented signature of MATCH differs form the actual one for two reasons: 1. the rule allows for 0 regexps (first param), beacuse that is the way the rule has always worked and to not break compatibility; 2. a new "unused *" param was added at the end to emit a warning and skip extra arguments, this also to not break compatibility (see bfgroup#487)
existing GLOB-RECURSIVELY, which has become an alias and will not be documented. Switched all uses of old alias to GLOB_RECURSIVELY, notice that this should also be done into the source file for doc/src/hljs/highlight.min.js, highlight.js which is not in this repo.
fixed typo in jamfile.jam, fixed syntax in §6.2 Builtin rules fixed escaping of __xyz__ in §6.5.1 modules fixed escaping of __xyz__ in §6.5.2 class removed duplicate of error_skip_frames in §6.5.3 errors fixed word boundaries \< and \> in §6.5.4 regex fixed typo in b2::regex_split in §6.5.4 regex fixed escaping of __xyz__ in §6.6.1 Class abstract-target fixed escaping of __xyz__ in §6.6.4 Class basic-target fixed escaping of __xyz__ in §6.6.5 Class typed-target fixed formatting in §12.2.2 Targets, fixed formatting in §12.2.3 Rules fixed formatting in §12.2.4 Built-in Rules updated MATCH and BACKTRACE in §12.2.4 Built-in Rules
This was referenced Jan 7, 2026
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Note
Note this PR replaces #487 and ends the work of #486, the code is branched from there, so this one accumulate all the changes.
implements the new undocumented argument list of
MATCHbuiltin rule: that isMATCH ( regexps * : list * : unused * ). The documented version omits theunusedparameter. The argument list forECHOtoo is provided.Do not update the
python.jamscript as the extra arguments are now simply ignored. I will update any regexps that need it later.Leave
HDRRULEandNOTIMEas they are. I will remove both with the next PR.GLOB-RECURSIVELYhas became an alias ofGLOB_RECURSIVELY; still undocumented. I Switched all internal uses of old alias toGLOB_RECURSIVELY.GLOB_RECURSIVELYhasn't been published so far, other than because of its name (which is fine now), perhaps also because it has fewer features thanGLOB(it doesn't handle case with thedowncase-optargument). I think it should be expanded before being published.