There should be a way to join hard-wrapped line comments

[itingliu]

Background

swift-format supports reflowing prose in some scenarios:

• respectsExistingLineBreaks: false collapses manually-wrapped code that fits within lineLength
• reflowMultilineStringLiterals does the same for multiline string literals.

Line comments should be supported too.

Current behavior

When respectsExistingLineBreaks == false and lineLength is permissive (e.g. 250), the formatter will collapse a hand-broken function call onto one line but leave this untouched:

// This comment was written at an 80-column
// terminal and never updated.

There is no existing rule or configuration flag for this. This results in inconsistent format when the project with wider line lengths use respectsExistingLineBreaks: false to collapse code

[itingliu]

I don't think this is the same? I want to combine the comments into one line, but the other issue #469 is saying it doesn't respect split into multiple lines? @allevato?

[allevato]

You're right! I misread it. Reopening.

That being said, I imagine that this could be implemented as part of a single change that would simply look for any contiguous blocks of line comments and treat them as a single entity for the purposes of wrapping, solving both issues. That's the obvious thing to do for doc comments, so line comments could be done the same.