The fix comes from the rewriting of the `closure_parameters` stanza:
it was capturing the entire `closure_parameters` node including
paretheses, whitespace, and commas. Capturing the identifiers within
fixes the tracking.
In order to make sure locals definitions from closure parameters don't
leak out of the body of the closure, though, we should also mark the
closure itself as a locals scope.
A few changes to make TSQ highlights better:
* A parsing error has been fixed in the grammar itself
* Previously tree-sitter-tsq did not parse the variables
in predicates like `(#set! injection.language "javascript")`
* Theme nodes as `tag`
* The newly added node to the parser (from the above fix) is
`variable` which takes over the `variable` capture from nodes
* Highlight known predicates as `function` and unsupported
predicates as `error`
* This may help when translating queries from nvim-treesitter.
For example `#any-of?` is a common one used in nvim-treesitter
queries but not implemented in Helix or tree-sitter-cli.
* Inject tree-sitter-regex into `#match?` predicates
You might use a macro like `?MODULE` to name a record:
-record(?MODULE, {a, b, c}).
With this fix, the record fields correctly get `variable.other.member`
highlights.
* branch message with current branch and diverged branch has been
added to the parser
* scissors used in verbose commits are marked as a punctuation
delimiter
* we could use comment instead since they're visually the
same but IMO this works better
Punctuation highlights would show up outside of where they
were valid, for example using parentheses in some text. This
change prevents that by gating the captures to being under
the named nodes in which they are valid.
* add punctuation highlights for commas as in function parameters
* remove stray `variable.parameter` highlight
* I couldn't find any regressions from this and it fixes an
edge case I ran into (but sadly did not record 😓)
* highlight `fn` as `keyword.function`
* the theme docs have `fn` as an example so it seems fitting
The '#' character may either be interpreted as a map when used
like so:
%% Example 1
#{a => b}
Or as an operator which updates an existing map when the left-hand
side is an expression:
%% Example 2
MyMap#{a => b}
This commit changes the highlight to `punctuation.bracket` when used
as a character in a literal map (example 1) and keeps the `operator`
highlight when used for updating (example 2).
The update to the grammar itself covers the case where the document
is a single expression without a trailing newline such as "min(A, B)".
A small change to the parser now parses these expressions correctly
which improves the display of the function head in the signature
help popup.
The update to the queries marks 'andalso', 'orelse', 'not', etc. as
`@keyword.operator` which improves the look - it looks odd to see
operators that are words highlighted the same as tokens like '->'
or '=:='.
* str, list, etc. handled as @function.builtin and @type.builtin
* None and non-conforming type indentifiers as @type in type hints
* class identifiers treated as @type
* @constructor used for constructor definitions and calls rather than
as a catch-all for type-like things
* Parameters highlighted
* self and cls as @variable.builtin
* improved decorator highlighting as part of @function
Re-ordering of some statements to give more accurate priority.
* log textobject query construction errors
The current behavior is that invalid queries are discarded silently
which makes it difficult to debug invalid textobjects (either invalid
syntax or an update may have come through that changed the valid set
of nodes).
* fix golang textobject query
`method_spec_list` used to be a named node but was removed (I think
for Helix, it was when updated to pull in the support for generics).
Instead of a named node for the list of method specs we have a bunch
of `method_spec` children nodes now. We can match on the set of them
with a `+` wildcard.
Example go for this query:
type Shape interface {
area() float64
perimeter() float64
}
Which is parsed as:
(source_file
(type_declaration
(type_spec
name: (type_identifier)
type: (interface_type
(method_spec
name: (field_identifier)
parameters: (parameter_list)
result: (type_identifier))
(method_spec
name: (field_identifier)
parameters: (parameter_list)
result: (type_identifier))))))
HEEx is a templating engine on top of Elixir's EEx templating
language specific to HTML that is included in Phoenix.LiveView
(though I think the plan is to eventually include it in base
Phoenix). It's a superset of EEx with some additional features
like components and slots.
The injections don't work perfectly because the Elixir grammar is
newline sensitive (the _terminator rule). See
https://github.com/elixir-lang/tree-sitter-elixir/issues/24
for more information.
This will become more important with the HEEx grammar being added.
Error highlighting with the Elixir grammar is a bit jumpy because
in some scenarios, a bit of missing syntax can force tree-sitter to
give up on error recovery and mark the entire tree as an error.
This ends up looking bad when editing. We don't typically highlight
error nodes so I'm inclined to leave it out of the highlights here.
After the incremental parsing rewrite for injections (which was released
in 22.03 https://helix-editor.com/news/release-22-03-highlights/#incremental-injection-parsing-rewrite),
we can now do combined injections which lets us pull in some templating
grammars. The most notable of those is embedded-template - a pretty
straightforward grammar that covers ERB and EJS.
The grammar and highlights queries are shared between the two but they have
different injections.
It looks like a24fb17b2a (and
855e438f55) broke the typescript
highlights because typescript
; inherits: javascript
but it doesn't have those named nodes in its grammar.
So instead we can separate out JSX into its own language and copy
over everything from javascript and supplement it with the new
JSX highlights. Luckily there isn't too much duplication, just the
language configuration parts - we can re-use the parser with the
languages.toml `grammar` key and most of the queries with `inherits`.
