Merge pull request #45 from google/multiline-comments

Fix multiline comments (. isn't multiline, need [\s\S\r\n])

Author: ochafik

include/minja/minja.hpp

@@ -2194,7 +2194,7 @@ class Parser {
     }
 
     TemplateTokenVector tokenize() {
-      static std::regex comment_tok(R"(\{#([-~]?)(.*?)([-~]?)#\})");
+      static std::regex comment_tok(R"(\{#([-~]?)([\s\S\r\n]*?)([-~]?)#\})");
       static std::regex expr_open_regex(R"(\{\{([-~])?)");
       static std::regex block_open_regex(R"(^\{%([-~])?[\s\n\r]*)");
       static std::regex block_keyword_tok(R"((if|else|elif|endif|for|endfor|generation|endgeneration|set|endset|block|endblock|macro|endmacro|filter|endfilter|break|continue)\b)");

tests/test-syntax.cpp

@@ -74,6 +74,10 @@ TEST(SyntaxTest, SimpleCases) {
         return testing::Throws<std::runtime_error>(Property(&std::runtime_error::what, testing::HasSubstr(expected_substr)));
     };
 
+    EXPECT_EQ(
+        "ok",
+        render("{# Hey\nHo #}{#- Multiline...\nComments! -#}{{ 'ok' }}{# yo #}", {}, {}));
+    
     EXPECT_EQ(
         "    b",
         render(R"(  {% set _ = 1 %}    {% set _ = 2 %}b)", {}, lstrip_trim_blocks));