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rustdoc: Don't counts ids twice when using --enable-commonmark #44368

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Sep 15, 2017
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rustdoc: Don't counts ids twice when using --enable-commonmark #44368

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8 changes: 6 additions & 2 deletions src/librustdoc/html/render.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1752,9 +1752,13 @@ fn render_markdown(w: &mut fmt::Formatter,
prefix: &str,
scx: &SharedContext)
-> fmt::Result {
let hoedown_output = format!("{}", Markdown(md_text, RenderType::Hoedown));
// We only emit warnings if the user has opted-in to Pulldown rendering.
let output = if render_type == RenderType::Pulldown {
// Save the state of USED_ID_MAP so it only gets updated once even
// though we're rendering twice.
let orig_used_id_map = USED_ID_MAP.with(|map| map.borrow().clone());
let hoedown_output = format!("{}", Markdown(md_text, RenderType::Hoedown));
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don't need to change it, but in the future, using .to_string() is the same as format!("{}", ..)

USED_ID_MAP.with(|map| *map.borrow_mut() = orig_used_id_map);
let pulldown_output = format!("{}", Markdown(md_text, RenderType::Pulldown));
let differences = html_diff::get_differences(&pulldown_output, &hoedown_output);
let differences = differences.into_iter()
Expand All @@ -1775,7 +1779,7 @@ fn render_markdown(w: &mut fmt::Formatter,

pulldown_output
} else {
hoedown_output
format!("{}", Markdown(md_text, RenderType::Hoedown))
};

write!(w, "<div class='docblock'>{}{}</div>", prefix, output)
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