Disable dart format for one line (or a range of lines)

[fzyzcjy]

This will be very helpful for, for example, Flutter repository itself. The current auto-formatter is not used by Flutter because sometimes its format makes code not very readable, and in this case, something like // dart-format-please-ignore-the-following-line would be very helpful.

I heard this is being worked on, but I googled and searched the issues without finding one, thus I create an issue here.

Related: https://discord.com/channels/608014603317936148/608018585025118217/1126403478424666154

[munificent]

I'm not working on it yet, but, yes I've come around to the idea that this is worth doing. Thanks for filing the issue. :)

[Reprevise]

Came here to open an issue similar to this, I'd love to see something like this:

// formatter(ignore)
const matrixValues = [
  1, 0, 0, 0, 0,
  0, 1, 0, 0, 0,
  0, 0, 1, 0, 0,
  0, 0, 0, 1, 0
];
// formatter(end-ignore)

Anyone who's worked with ColorFilter.matrix() knows the pain of the formatter putting each double value on a new line

[mrcnski]

Here's another use case. dart format changes this:

print("  error: line $e.lineNum: '$e.line'");
print("         ${e.originalException.runtimeType}: ${e.originalException.toString()}");

to this:

print("  error: line $e.lineNum: '$e.line'");
print(
    "         ${e.originalException.runtimeType}: ${e.originalException.toString()}");

I'd like to preserve the first version, with the strings nicely lined up, to be able to see the output formatted the same way the user would see it!

[munificent]

In that specific case, an easier fix is simply:

print("  error: line $e.lineNum: '$e.line'");
print("         ${e.originalException.runtimeType}: ${e.originalException}");