Support partially formatting method chains#6862
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randomPoison wants to merge 17 commits intorust-lang:mainfrom
Open
Support partially formatting method chains#6862randomPoison wants to merge 17 commits intorust-lang:mainfrom
randomPoison wants to merge 17 commits intorust-lang:mainfrom
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Check the span of the chain against the selected lines to format. Only allow formatting the chain as a single line if the entire chain is covered by the selected range.
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Support formatting method chains when only part of the chain is selected with
--file-lines, ensuring that only the selected parts of the chain are modified. Partially addresses #4053.To support this I had to define how chains should be formatted when only part of the chain is selected, since short chains want to be formatted into a single line but we can't do so if only part of the chain was selected. I've opted to have partially-selected chains always be formatted as multi-line chains (i.e. one call in the chain per line, as is the case for long method chains), even if the chain as a whole would be short enough to fit in one line. This means we sometimes get different formatting when formatting the chain as a whole vs formatting only part of the chain, but that seems like the only reasonable approach to take and aligns with the desired formatting described in #4053.
Commit history isn't clean, let me know if I should squash this before it can be merged.