Matching brace highlights over more than 100 lines

[kevadsett]

Brackets (34 and earlier) does an excellent job of highlighting the other bracket in a matching pair:

However, once the containing code is more than 100 lines, it loses this ability, which can get very frustrating when working with large JSON files for example, where syntax highlighting is not possible, so you come to rely on this sort of visual feedback to let you know where you are.

If I select the square bracket (98 lines between the two), it works fine:

However, selecting the parenthesis (100 lines between the two), or the curly brace (102 lines), then the result is:

I'm on Win 7 Home Premium SP 1 - 64 bit, and have disabled all extensions in brackets.

[lkcampbell]

@kevadsett, it might be a CodeMirror issue, so can you test your problem code in CodeMirror? Just go to: http://codemirror.net/demo/loadmode.html and cut and paste your code into the demo text area right at the top of the page. It should highlight the matching braces in a bright green color. If you still see the problem in that demo, it is a CodeMirror issue and you need to file an issue at: https://github.com/marijnh/CodeMirror.

Either way, let us know.

One other note, you can use my Indent Guides extension to help line up braces. I often use it to help me in the very scenario you describe above.

[kevadsett]

Yes – replicated in CodeMirror. Appears to have been somewhat addressed by codemirror/codemirror5#1903, but unsure how that affects Brackets.

Thanks for the heads up on the extension.

[lkcampbell]

Ah, interesting...so it is related to the number of lines, and the default max value is 100 lines.

In that case, the core Brackets team needs to decide what they want the max to be, balanced with potential performance issues. So it is up to them to decide what to do with this bug.

The good news is, either way, the Indent Guides extension should still help you and I personally find it to be a much stronger visual guide to finding matching braces over many, many lines.

[njx]

Low pri to @redmunds to investigate whether we could make this significantly larger without hitting performance issues.

[redmunds]

For Sprint 39, I increased the maximum number of lines scanned to be 1,000 and the number of chars to be 50,000. Let us know if these values are too small or too large (affect performance) and we can adjust the numbers. We might even want to make these prefs. Closing.