[lex.phases] Move dropping whitespace to end of phase 4 #8117
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Phase 7 deals only with tokens, not whitespace. For clarity move the dropping of whitespace to the end of phase 4, after preprocessing directives are deleted. Newline characters are significant in the grammar of preprocessing directives to whitespace characters are clearly signicant until this point. Conversely, it is good to recognise that string literal preprocessing tokens are adjacted regardless of whitespace in phases 5 and 6.