rust/tests/rustdoc/issue-47197-blank-line-in-d...

// @has issue_47197_blank_line_in_doc_block/fn.whose_woods_these_are_i_think_i_know.html

/**
* snow

* ice
*/
pub fn whose_woods_these_are_i_think_i_know() {}
wherein careful doc-decoration arithmetic proves quite the ICE-breaker This `horizontal_trim` function strips the leading whitespace from doc-comments that have a left-asterisk-margin: /** * You know what I mean— * * comments like this! */ The index of the column of asterisks is `i`, and if trimming is deemed possible, we slice each line from `i+1` to the end of the line. But if, in particular, `i` was 0 _and_ there was an empty line (as in the example given in the reporting issue), we ended up panicking trying to slice an empty string from 0+1 (== 1). Let's tighten our check to say that we can't trim when `i` is even the same as the length of the line, not just when it's greater. (Any such cases would panic trying to slice `line` from `line.len()+1`.) Resolves #47197. 2018-01-05 15:09:02 +08:00			`// @has issue_47197_blank_line_in_doc_block/fn.whose_woods_these_are_i_think_i_know.html`

			`/**`
			`* snow`

			`* ice`
			`*/`
			`pub fn whose_woods_these_are_i_think_i_know() {}`