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klammertext/tst/coverage/basic.k

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Target coverage: a klammer states the targets it serves kdesc gains --coverage, which reports for every klammer the set of targets it can render to, and — the point of it — which klammers' coverage cannot be derived and must therefore be declared. Three rules: coverage is DERIVED where the definitions determine it (a general body of klammer calls covers the intersection of what those klammers cover, by a greatest fixpoint after loading), DECLARED where the engine cannot interpret what decides it (an @eval body, whose targets are undecidable), and UNKNOWN where nothing is written — which never means "deliberately unavailable". Two new spellings in a definition's name. A comma-separated target list, "@@table.html,tex :: ...", gives one body several targets; it is surface syntax, expanded at registration, and each member goes through the redefinition rules on its own. And "@@date.* :: ..." writes the general target out, asserting that the klammer works for EVERY target including ones not yet defined — a stronger claim than a list of the targets defined today, and the one target declaration that could be mechanically falsified. The Standard Klammer Set was swept accordingly: it now has no general definitions at all, every klammer names the targets it serves, six use ".*", and tex and pdf are at zero undecided. kdesc's flags are reorganised on two rules: a flag reached for often gets a single letter (-k klammers, -t targets, -c characters, -i input), a more specialised topic a multi-letter name (--argtypes, --katoms, --rewrite, --optionsets, --coverage, --klammerset, --font); and -v says how much to show about PROCESSING, never what the RESULT contains — so the katom regex column is "--katoms full" and the coverage detail "--coverage all". NOTE: "-k" now lists klammers (optionally filtered by a name/description search); the katom table moved to "--katoms". Fixes carried along: an option written with no value crashed the command with SIGSEGV instead of reporting the mistake; two required positional arguments never parsed; kdesc and kdiag printed an error and exited 0; and definition diagnostics counted registrations rather than what was written, so one line could be reported as two definitions and then printed twice. Four new test suites: target_list, coverage, command_option, kdesc. (from dev 46f54080bd9a)
2026-08-12 17:20:23 +02:00
# Fixture for coverage_test.sh. Engine tier: it declares its own targets,
# so the suite runs with no klammer set.
@@@target ta | Target A @@@
@@@target tb | Target B @@@
@@@target tc | Target C @@@
# Defined per target: coverage is what the definitions say.
@@ab.k s : defined for ta and tb @@
@@ab.ta :: A*s* @@
@@ab.tb :: B*s* @@
# A comma list is the same statement written once (step 1).
@@cd.k s : defined for ta and tc by a list @@
@@cd.ta,tc :: C*s* @@
# General body of plain text: every target.
@@plain : just text @@
# General body calling one klammer: that klammer's coverage.
@@calls_ab s : @ab *s* @ @@
# Intersection of two klammers with different coverage: only ta is in both.
@@calls_both s : @ab *s* @ @cd *s* @ @@
# ".*" is an assertion: every target, including targets not yet defined.
# Distinct from a bare definition, which asserts nothing -- that is the
# writer's macro form.
@@universal.k s : works for any target @@
@@universal.* :: U*s* @@
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