Issue 137971
Summary [clang-format][objc] Preserve space after colon
Labels clang-format
Assignees
Reporter 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:

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

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