The TextMate grammars for inline templates and inline styles ended the
string at the first occurrence of the delimiter, so an escaped delimiter
(e.g. \`) terminated the highlighting prematurely and the rest of the
template was no longer highlighted as HTML.
Escape sequences are now consumed before delegating to the HTML/CSS
grammars, so escaped delimiters no longer end the string. Also removes
the stray pipes from the string delimiter character class, which
unintentionally matched a literal '|'.
Fixes#65493
This change allows to toggle attributes that are on their own line and have a 1+ leading space.
This change doesn't suffer from the issue that was reverted in #68067.
Also this change fixes another regression that messed up highlighting if an attribute value included a '//', like in an href.
Updates the syntax definition to handle arrow functions. The definition is largely based on TypeScript's own syntax highlighting since it's quite complex.
aparziale