Implement multiline delimiter catpures

[mkatychev]

Implement multiline delimiter catpures

Issue: #835

Description

Implemented missing features for @append_multiline_delimiter and @prepend_multiline_delimiter documented in the project README

Checklist

Checklist before merging:

• CHANGELOG.md updated
• README.md up-to-date

[mkatychev]

this does tracing style key/value logging hence the activation of the kv feature flag in log, happy to remove. Made debug logs a bit cleaner for me.

[mkatychev]

There's an idempotence check failure here that's likely clashing with the @append_spaced_softline after the comma:

topiary/topiary-queries/queries/rust.scm

Lines 108 to 116 in 53eeec8

	; Append softlines, unless followed by comments.
	(
	[
	","
	";"
	] @append_spaced_softline
	.
	[(block_comment) (line_comment)]* @do_nothing
	)

Logically, the precedence should be to handle the append delimiter before handling the sofline.

[mkatychev]

there seems to be a lot of variance between referring to multilines, would help to normalize for consistency:

• multiline
• multi-line
• multi_line

[Xophmeister]

Thank you for taking this on, but before you continue, please see my comment on #835.

In particular, the @{prepend,append}_multiline_delimiter captures were removed along time ago (nearly 2 years ago) and replaced by a different approach using predicates. If you look at #354 -- where this happened and the documentation is correct -- that may solve your problem, without having to reimplement anything.

[mkatychev]

Closed due to being obsolete:
#354