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klammertext/sks/image/image.k
Andy Kopra 59c1599bc9 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

63 lines
1.7 KiB
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#[
@@@state image_search_path.list :create Series of directories for image search
:value . imgsrc ../imgsrc ../dbg
@@@
]#
@@@state Image_search_path :desc Series of directories for image search
:value . imgsrc ../imgsrc ../dbg
@@@
@@@state Image_output_dir :desc Output directory for images :value img @@@
@@@state Image_default_width :desc Default width for images :value .667w @@@
#
# @@@argtype pixels | a pixel count :pattern \d+px @@@
# @@image.k basename : Image read from a file @@
# @@image.html basename | width | height : @eval import image ; result = image.image(K) eval@ @@
# An image once had its own position type, for the sake of the "none" value
# (no positioning container). That value is meaningful for any block
# element, so the shared hpos type carries it and an image is placed by the
# hpos_args option set like every other block element.
@@image.k
basename
:id
:width.length .5w
@caption_args@
:vmargin.bool true
@hpos_args@
:rel
:abswidth.number 0.0
:border.bool false
:
An image read from a file. The basename names the file, which is looked
for in the image search path and converted to a format the target can use.
^:width is the image's width in the text column, ^:hpos and ^:offset place
it there, and the caption arguments caption it.
@@
@@image.html,tex :: @eval image.Image(K) eval@ @@
@@image_grid.k
image_specs.rest(2)
:cell_number.bool false
:landscape.bool false
:scale.number 0.98
@caption_args@
@hpos_args@
:thumbnail.bool false
:allow_break.bool true
:id
:rel
:hsep.number 0.02
: A grid of images
@@
@@image_grid.html,tex :: @eval image_grid.Image_grid(K) eval@ @@
@@fig.k spec.figure_id : The caption title for a figure @@
@@fig.html,tex :: @reference *spec* | Figure @ @@