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ssue #2896 - trim extra whitespaces with comment at end of line #4391

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ssue #2896 - trim extra whitespaces with comment at end of line #4391

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41e6929
Resolve issue #2896 - trim extra blanks at end of line when following…
davidBar-On Aug 19, 2020
9e8eb5f
Add test cases to tests/source/issue-2896.rs file for cases solved by…
davidBar-On Aug 24, 2020
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10 changes: 9 additions & 1 deletion src/formatting/comment.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1604,7 +1604,15 @@ pub(crate) fn recover_comment_removed(
let snippet = context.snippet(span);
let includes_comment = contains_comment(snippet);
if snippet != new && includes_comment && changed_comment_content(snippet, &new) {
Some(snippet.to_owned())
/* Trim white spaces at end of lines */
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Suggested change
/* Trim white spaces at end of lines */
/* Trim whitespace at end of lines */

let mut c = String::from("");
for line in snippet.to_owned().split('\n') {
if c != "" {
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Suggested change
if c != "" {
if !c.is_empty() {

c.push('\n')
};
c.push_str(line.trim_end());
}
Some(c.to_owned())
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c is already a String, is to_owned needed?

} else {
Some(new)
}
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21 changes: 21 additions & 0 deletions tests/source/issue-2896.rs
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Expand Up @@ -159,3 +159,24 @@ fn main() {
}
}).unwrap();
}



/*******************************************************************************************
* Added test cases for related issues that are supposed to be solved by Pull request #4391
* ******************************************************************************************/

// ** Note the extra blank at the end of the 2nd line
fn main() {
if 0 == 1
/* x */ as i32 {} }

// ** Note the extra blank at the end of the 2nd line
fn main() {
if 0 == ' '
as i32 {} }

// ** Note the extra blank at the end of the 3rd line
fn main() {
if 0 == ' ' /* x */
as i32 {} }