use super::*; impl Editor {    pub fn toggle_markdown_block_quote(        &mut self,        _: &ToggleBlockQuote,        window: &mut Window,        cx: &mut Context<Self>,    ) {        self.manipulate_mutable_lines_in_markdown(window, cx, |lines| {            let all_lines_quoted = lines.iter().all(|line| line.starts_with('>'));             for line in lines.iter_mut() {                let stripped_line = match line.strip_prefix("> ").or_else(|| line.strip_prefix('>'))                {                    Some(rest) => rest.to_string(),                    None => line.to_string(),                };                 *line = if all_lines_quoted {                    Cow::Owned(stripped_line)                } else if stripped_line.trim().is_empty() {                    Cow::Borrowed(">")                } else {                    Cow::Owned(format!("> {stripped_line}"))                };            }        });    }     fn manipulate_mutable_lines_in_markdown<Fn>(        &mut self,        window: &mut Window,        cx: &mut Context<Self>,        callback: Fn,    ) where        Fn: FnMut(&mut Vec<Cow<'_, str>>),    {        if !self.is_in_markdown_language(cx) {            return;        }         self.manipulate_mutable_lines(window, cx, callback);    }     fn is_in_markdown_language(&self, cx: &mut App) -> bool {        let snapshot = self.buffer.read(cx).snapshot(cx);        let head = self            .selections            .newest::<MultiBufferOffset>(&self.display_snapshot(cx))            .head();        snapshot            .language_at(head)            .is_some_and(|language| language.name() == "Markdown")    }}