Switch to handling the unescaping during the initial parsing.

This preserves the line ending characters unlike the rust .lines() iterator.

src/parser/lesser_block.rs

@@ -2,17 +2,22 @@ use nom::branch::alt;
 use nom::bytes::complete::is_not;
 use nom::bytes::complete::tag;
 use nom::bytes::complete::tag_no_case;
+use nom::character::complete::anychar;
 use nom::character::complete::line_ending;
 use nom::character::complete::space0;
 use nom::character::complete::space1;
 use nom::combinator::consumed;
 use nom::combinator::eof;
 use nom::combinator::map;
+use nom::combinator::not;
 use nom::combinator::opt;
+use nom::combinator::peek;
 use nom::combinator::recognize;
 use nom::combinator::verify;
+use nom::multi::many0;
 use nom::multi::many_till;
 use nom::multi::separated_list1;
+use nom::sequence::preceded;
 use nom::sequence::tuple;
 
 use super::org_source::OrgSource;
@@ -151,7 +156,10 @@ pub(crate) fn example_block<'b, 'g, 'r, 's>(
     let parser_context = parser_context.with_additional_node(&contexts[2]);
     let parameters = parameters.map(|(_, parameters)| parameters);
 
-    let (remaining, contents) = parser_with_context!(text_until_exit)(&parser_context)(remaining)?;
+    let (remaining, contents) = many0(preceded(
+        not(parser_with_context!(exit_matcher_parser)(&parser_context)),
+        map(content_line, Into::<&str>::into),
+    ))(remaining)?;
     let (remaining, _end) = lesser_block_end_specialized(&parser_context, remaining)?;
 
     let source = get_consumed(input, remaining);
@@ -178,7 +186,7 @@ pub(crate) fn example_block<'b, 'g, 'r, 's>(
             retain_labels,
             use_labels,
             label_format,
-            contents: contents.into(),
+            contents,
         },
     ))
 }
@@ -431,3 +439,10 @@ fn switch_word<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, OrgSource<'s>> {
         is_not(" \t\r\n"),
     ))(input)
 }
+
+#[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
+fn content_line<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, OrgSource<'s>> {
+    let (remaining, _) = opt(tuple((space0, tag(","), peek(alt((tag("#+"), tag("*")))))))(input)?;
+    let (remaining, line_post_escape) = recognize(many_till(anychar, line_ending))(remaining)?;
+    Ok((remaining, line_post_escape))
+}

src/types/lesser_element.rs

@@ -45,7 +45,7 @@ pub struct ExampleBlock<'s> {
     pub retain_labels: bool,
     pub use_labels: bool,
     pub label_format: Option<&'s str>,
-    pub contents: &'s str,
+    pub contents: Vec<&'s str>,
 }
 
 #[derive(Debug)]
@@ -241,21 +241,12 @@ impl<'s> Comment<'s> {
 impl<'s> ExampleBlock<'s> {
     /// Get the inner contents of the ExampleBlock with the escaping commas removed.
     pub fn get_contents(&self) -> String {
-        let mut ret = String::with_capacity(self.contents.len());
-        for line in self.contents.lines() {
-            let first_comma = line.find(",#+").or_else(|| line.find(",*"));
-            if let Some(first_comma) = first_comma {
-                let before_first_comma = &line[..first_comma];
-                let is_escaping_comma = before_first_comma.chars().all(char::is_whitespace);
-                if is_escaping_comma {
-                    ret.push_str(&line[(first_comma + 1)..]);
-                } else {
-                    ret.push_str(line);
-                }
-            } else {
-                ret.push_str(line);
-            }
+        let final_size = self.contents.iter().map(|line| line.len()).sum();
+        let mut ret = String::with_capacity(final_size);
+        for line in &self.contents {
+            ret.push_str(line);
         }
+
         ret
     }
 }