[clang-format][objc] Preserve space after colon

[ovaar]

In Objective-C, it's common in some codebases to place a space between the colon (:) and the value in method calls or message expressions for improved readability and vertical alignment, like so:

NSTableCellView *result = [outlineView makeViewWithIdentifier: columnIdentifier owner: self];

However, clang-format currently strips the space after the colon, reformatting it as:

NSTableCellView *result = [outlineView makeViewWithIdentifier:columnIdentifier owner:self];

Therefore I submit the request for such option to preserve or enforce a space after the colon in Objective-C method calls or message expressions.

[llvmbot]

@llvm/issue-subscribers-clang-format

Author: Ovaar (ovaar)

In Objective-C, it's common in some codebases to place a space between the colon (:) and the value in method calls or message expressions for improved readability and vertical alignment, like so:

NSTableCellView *result = [outlineView makeViewWithIdentifier: columnIdentifier owner: self];

However, clang-format currently strips the space after the colon, reformatting it as:

NSTableCellView *result = [outlineView makeViewWithIdentifier:columnIdentifier owner:self];

Therefore I submit the request for such option to preserve or enforce a space after the colon in Objective-C method calls or message expressions.