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Both listed check and new-overlay among the commands but neither told a
reader how they fit together, which is the part that makes them useful. The
overlay sections now carry the four-step loop -- new-overlay, edit, check,
run -- and state what check does not do, since its name invites a stronger
reading than it earns.
Also documents what the format now permits: citations and layer optional, the
signed Easter_offset, the negative nth counting from the end of the month,
and the legal values of each of the six required fields, which previously
appeared only in the shipped example.
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Writing a local calendar had no feedback loop. An overlay is applied, not
validated -- that stays true, and the five test layers still cannot vouch for
a user's file -- but before this the only way to learn whether yours did what
you meant was to generate a year of output and grep for your own slug, and the
only way to see that a directive matched nothing was to notice a warning
scroll past among 365 lines.
`check` loads each overlay, applies it to the real shipped calendar, and
reports the directive counts, the slug each one targets, and any directive
that found no target. It exits 2 when a file fails to load or a directive
matched nothing, so it composes into a Makefile or a pre-commit hook rather
than merely being readable. It is applied to the SHIPPED calendar and not to
an empty layer on purpose: against an empty one every Suppress would fail
trivially and the check would be worthless.
It answers three narrow questions -- does the file parse, does every directive
find its target, what does the merged result contain. It does not validate a
calendar against the rubrics and cannot, and both the help text and the man
page say so rather than letting the name imply more than it does.
`new-overlay` prints a starter to stdout for redirection, rather than writing
a file where it likes. Every value in it is a placeholder that will appear in
`day` output if left unedited, so a half-finished overlay is visible rather
than silently inert, and it documents the three date shapes and the legal
values for each closed field inline.
load_ef_layer now returns its diagnostics instead of printing them: day and
readings still want them on stderr beside a year of output, while check wants
them on stdout, attributed to the overlay that produced them, and counted.
Printing at the source made the second impossible.
The cram test round-trips new-overlay through check rather than pinning the
template line by line -- editing its prose should not fail a test, but a
syntax error in it still must.
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`--overlay` shipped last week with nothing to point at. The only example
was a test fixture, explicitly labelled invented and living where no user
would find it, so "colitur supports local calendars" was true but
undemonstrated.
data/ef/examples/diocesan-example.sexp is installed to
<prefix>/share/colitur/examples/ and is runnable documentation: every
celebration in it is invented, with example- slugs that cannot collide,
and its header explains the four directives, the three date shapes, and
the field vocabularies before showing any of them.
It demonstrates the range deliberately rather than the minimum: a
fixed-date local patron with its own propers; a movable dedication on the
first Sunday of October, I class because a church's own dedication
anniversary is I class in that church and at III it would lose to the
Sunday every year; an Easter-relative commemoration; an Edit raising a
universal feast for local use; and a Suppress shown commented out,
because suppressing a universal feast is a real liturgical act and an
example should not invite it casually.
Two things the header says plainly, since this is the one file that lets
someone change what colitur computes: an overlay is applied ON TOP of the
shipped calendar and never instead of it, and an overlay is applied, NOT
validated -- the five test layers assert things about the shipped data
and cannot vouch for a user's file.
A test asserts it loads against the real EF rank vocabulary, still
demonstrates at least four directives, and applies with NO diagnostics.
The last matters most: a directive naming a slug the universal calendar
lacks would warn, and an example that warns teaches the wrong lesson. It
deliberately does not pin which days it produces -- those celebrations
are invented, and pinning their dates would make an illustrative file
behave like calendar data.
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The Overlay algebra has been built and tested since Plan 2, and
Date_spec grew movable variants last commit, but there was still no way
to hand colitur a file: bin/main.ml applied exactly one overlay, the
shipped data/ef/adjustments.sexp, with the path hardcoded. This is the
plumbing.
--overlay is repeatable and ordered, and applies ON TOP of the shipped
adjustments rather than instead of them. That ordering is the whole
point: adjustments.sexp carries RG 110's own 30 June companion, the Major
Litanies, St Barbara and Rogation Wednesday, and a user file that
replaced it would silently drop all four while appearing merely to add a
local feast. Overlay.merge is last-writer-wins, so a local calendar can
still override a universal entry deliberately, by naming its slug.
The dispatch needed real argument parsing. It matched Sys.argv as an
exact array, which does not survive a repeatable flag -- two --overlay
arguments are a different array shape from one, and each further flag
would multiply the patterns again. Flags are now stripped first and the
remaining words matched as command plus year. Hand-rolled, because the
dependency list is frozen and this is fifteen lines. One defect found by
the cram suite on the first run: the unknown-option guard rejected
--help and --version, having excluded only their short forms.
Refused, not ignored, on easter and temporal. Neither reads sanctoral
data -- temporal deliberately runs the cycle before any layer exists --
so accepting the flag there and silently doing nothing is the failure
mode this project refuses everywhere else.
A file that fails to load is fatal, exactly as the shipped overlay is; a
directive naming a slug that does not exist warns on stderr and the run
continues. The second matters more for a user file than for ours: a typo
in a diocesan calendar should say so rather than quietly do nothing.
test/fixtures/overlay-example-diocesan.sexp is a worked example and is
labelled as invented, not calendar data. It carries both shapes a real
local calendar needs: a fixed-date patron, and a dedication on "the first
Sunday of October" -- which is the case the Date_spec work existed to
unlock and which lands on 4 October in 2026, 3 October in 2027, 1 October
in 2028. The dedication is I class because a church's own dedication
anniversary is I class in that church; at III class it lost to the
II-class Sunday every year, which a first draft demonstrated correctly
and uselessly.
The man page gains an OVERLAYS section saying plainly that an overlay is
applied, NOT validated: the five test layers assert things about the
shipped calendar and none of them can vouch for a file the user supplies.
This is the first feature that lets someone change what colitur computes,
and that distinction should not have to be inferred.
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Three things the project had no answer for: how to install it without
knowing dune, where to read about it, and what it does when asked.
Makefile, same shape as lectio's -- PREFIX ?= $(HOME)/.local, BINDIR,
MANDIR, and the '## '-comment help target -- so the two siblings are
driven the same way. Every recipe wraps dune in `opam exec --`, which is
the actual point of having one here: `make build` works from a plain
shell with no `eval $(opam env)` first. install goes through `dune
install` rather than a hand-rolled copy, because the binary finds its
calendar data relative to its own path; the man page is installed
separately to share/man/man1, matching lectio. install and uninstall
were both run against a scratch prefix and checked: uninstall leaves
zero files behind.
PREFIX defaults to ~/.local because that is where lectio installs and
where it actually lives on this machine, so colitur lands on an existing
PATH with no shell change. An earlier install this session went to
~/opt/colitur, which was me over-applying a rule meant for third-party
tools to one of the author's own projects; it has been removed rather
than left as a second, staler binary competing on PATH.
man/colitur.1 documents the four commands, both output formats and why
they differ, COLITUR_DATA_DIR and its refusal to fall back, the data
resolution order, exit statuses, and -- deliberately -- the limitations:
EF only, Epistle and Gospel only with the chants unbuilt and rejected
rather than guessed, and the BVM Saturday Mass-selection gap. A man page
that only lists what works is half a man page. Renders clean under
`groff -ww -z`, no warnings.
--help prints to stdout and exits 0; a usage error prints one line to
stderr and exits 2. That is the Unix convention rather than a
preference: asking for help succeeded and should be pipeable, being
invoked wrongly did not and must not pollute stdout. Both directions are
asserted in cli.t, along with a loop confirming every command the help
text advertises is one the dispatch actually accepts -- the check that
catches help drifting away from the code.
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