[Perl][PHP] scope_only folding does not appear to work

[paulihl]

What happened?

According to the comment at sublimehq/sublime_text#101 (comment) any scope tagged as punctuation.section.block.{begin,end} should trigger scope folding. When I enforce scope_only, there's no folding in Perl and PHP, although it seems that for example Rust works fine. (Rust Enhanced doesn't either, but that's an external package — it however almost misled me to think the entire feature doesn't work)

(also aside, there is a missing .rust in Rust.sublime-syntax line 573, the only one to miss the language name in all the syntaxes)

Expected behaviour: functions, classes, ifs, subs, etc. should provide folding points
Actual behaviour: no folding points at all

[deathaxe]

The linked comment describes relevant settings for scope based folding to work.

Relevant rules have been added for syntaxes in this repository, which are known scope based folding works reliably.

Perl and PHP don't belong to this group.

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Perl doesn't specify meta scopes for groups/blocks in favor of better support for HEREDOCs.

As a result something like the following will cause undesired results when using scope based folding

{
  { 
    expr 

}}

as ST interprets closing braces `}}´ as single token and thus as single fold marker.

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PHP, ASP, JSP, ERB are primarily left out as those are a mix of HTML and another syntax, which can cause same sort of results.

Those are just beyond ST's capabilities of scope based folding.