- lexer.rl: accept tabs before closing heredoc delimiter

whitequark · Jan 12, 2024 · 9e37e3d · 9e37e3d
1 parent 717b38c
commit 9e37e3d
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/lib/parser/lexer/literal.rb b/lib/parser/lexer/literal.rb
@@ -6,6 +6,7 @@ module Parser
   class Lexer::Literal
     DELIMITERS = { '(' => ')', '[' => ']', '{' => '}', '<' => '>' }
     SPACE = ' '.ord
+    TAB = "\t".ord
 
     TYPES = {
     # type       start token     interpolate?
@@ -247,7 +248,7 @@ def delimiter?(delimiter)
         # E
         # because there are not enough leading spaces in the closing delimiter.
         delimiter.end_with?(@end_delim) &&
-          delimiter.sub(/#{Regexp.escape(@end_delim)}\z/, '').bytes.all? { |c| c == SPACE }
+          delimiter.sub(/#{Regexp.escape(@end_delim)}\z/, '').bytes.all? { |c| c == SPACE || c == TAB }
       elsif @indent
         @end_delim == delimiter.lstrip
       else

diff --git a/test/test_parser.rb b/test/test_parser.rb
@@ -11488,4 +11488,12 @@ def test_anonymous_params_in_nested_scopes
       'def b(**) ->(**) {c()} end',
       SINCE_3_3)
   end
+
+  def test_parser_bug_989
+    assert_parses(
+      s(:str, "\t\tcontent\n"),
+      "\t<<-HERE\n\t\tcontent\n\tHERE",
+      %q{},
+      ALL_VERSIONS)
+  end
 end