One notable feature is this this adds support for the experimental
`let x = loop { ... break $expr; }` syntax. This also includes a
test for formatting all the break and continue variations.
* Add spaces_within_square_brackets config option.
Enabling the config enforces spaces within various array/slice brackets.
* Fixed budget-calculations for [] spacing
* Add custom comments
This allows users to use custom comments such as
```
//@ this is a custom comment
//@ with multiple lines
```
without having them destroyed by rustfmt.
* Fix issues with empty lines
* Check non-whitespace right after custom comments
Only change multiline comments of the form
```rust
/*
* Text
*/
```
while not affecting comments of the form
```rust
/*
Text
*/
```
when normalize_comments is off. In the first case,
we have a known character we can align against, while
we don't have one in the second case.
Before, we have converted the second form into the first,
but this is against the spirit of normalize_comments being
turned off.
Fixes#956
* Split impl at 'for' if a line break is needed
* Fix formatting
* Improve comments
* Skip second try if there is no 'for'
* Restore intentional trailing whitespace
* Change test source to be incorrectly formatted
* Restore more missing trailing whitespace
* Remove too much whitespace...
Really should learn how to use git revert.
* Change required to prevent a trailing space at the end of a separate module being propagated
* Detect the start of the output file rather than the start of the input file when deciding whether to output preceding snippets - this stops unnecessary whitespace and blank lines from being inserted when spans and statements are output in an order other than that from the input file.
* Add code to prevent space from being added with the prefix snippet if a) the snippet is entirely horizontal whitespace, or b) the snippet contains whitespace followed by a newline. This prevents trailing spaces at the end of a line from being added.
* Tests for this issue
* Tidy up `match` statements
* Add test with blank lines between `use` statements
* Fix issue-1049
* Add testcase suggested by pepyakin
* Fix last commit
* Handle special case
* Remove debugging println
* Fix grammar in comment
* Change word in comment
* Add test for long func without ret type
* Add one more test
