Closure highlighting breaks when calling functions as default values

[Qix-]

javac = (options = {bin: generateTmpDir()}, callback) ->
   # . . .

produces:

The above code is completely valid and works as expected. However, when the parenthesis are added, highlighting breaks. {bin: generateTmpDir} highlights correctly, but of course that is completely functionally different.

[jordanbtucker]

It goes even deeper than just function calls. When parentheses are used anywhere in the expression for the value of a default argument of a function, it breaks highlighting for its function's argument list.

func = (arg1, arg2 = 'item(s)') ->

Here's how it looks:

Here are some similar examples of how it should look:

func = (arg1, arg2 = 1) ->
func = (arg1, arg2 = 'string') ->
func = (arg1, arg2 = ['array']) ->
func = (arg1, arg2 = {key:value}) ->
func = (arg1, arg2 = -> true) ->

Here are some other examples of it being broken:

func = (arg1, arg2 = new Date()) ->
func = (arg1, arg2 = eval('x + y')) ->
func = (arg1, arg2 = (x) -> !x) ->

[Qix-]

Looking back at this, it looks as if the kind of formatting we're asking for is impossible given standard highlighting languages.

Regex cannot parse/count recursive parenthesis. This will never be fixed until a syntax highlighter with grammar support is adopted. :)