Fix multiline comments with rn line endings, fixes #171.

CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Fix multiline comment support for `\r\n` line endings. ([#171][github-171], [#172][github-172])
 
 ## [2.9.3] - 2021-09-01
 ### Fixed
@@ -149,6 +151,8 @@ https://discourse.julialang.org/t/ann-literate-jl/10651 for release announcement
 [github-167]: https://github.com/fredrikekre/Literate.jl/pull/167
 [github-168]: https://github.com/fredrikekre/Literate.jl/issues/168
 [github-169]: https://github.com/fredrikekre/Literate.jl/pull/169
+[github-171]: https://github.com/fredrikekre/Literate.jl/issues/171
+[github-172]: https://github.com/fredrikekre/Literate.jl/pull/172
 
 [Unreleased]: https://github.com/fredrikekre/Literate.jl/compare/v2.9.3...HEAD
 [2.9.3]: https://github.com/fredrikekre/Literate.jl/compare/v2.9.2...v2.9.3

src/Literate.jl

@@ -161,9 +161,9 @@ function replace_default(content, sym;
         end
         return str
     end
-    content = replace_multiline(r"^#=+\R^(\X*?)\R=+#$"m, content)
+    content = replace_multiline(r"(*ANYCRLF)^#=+$\R^(\X*?)\R^=+#$"m, content)
     if config["mdstrings"]::Bool
-        content = replace_multiline(r"^md\"\"\"\R^(\X*?)\R\"\"\"$"m, content)
+        content = replace_multiline(r"(*ANYCRLF)^md\"\"\"$\R^(\X*?)\R^\"\"\"$"m, content)
     end
 
 

test/runtests.jl

@@ -827,10 +827,10 @@ end end
             @test isfile("inputfile.md")
 
             # fredrikekre/Literate.jl#165: \r\n line endings with multiline comments/mdstrings
-            write(inputfile, "#=\r\nhello world\r\nhej världen\r\n=#")
+            write(inputfile, "#=\r\nhello world\r\nhej världen\r\n=#\r\n")
             chunks, _ = Literate.preprocessor(inputfile, outdir; user_kwargs=(), user_config=(), type=:md)
             @test chunks[2].lines == ["" => "hello world", "" => "hej världen"]
-            write(inputfile, "md\"\"\"\r\nhello world\r\nhej världen\r\n\"\"\"")
+            write(inputfile, "md\"\"\"\r\nhello world\r\nhej världen\r\n\"\"\"\r\n")
             chunks, _ = Literate.preprocessor(inputfile, outdir; user_kwargs=pairs((; mdstrings=true)),
                                               user_config=(), type=:md)
             @test chunks[2].lines == ["" => "hello world", "" => "hej världen"]