merge revision(s) 57717: [Backport #13253]

	parse.y: indent at invalid identifier

	* parse.y (parser_heredoc_identifier): set indent only when valid
	  identifier, not to dedent non-existent contents later.
	  [ruby-core:79772] [Bug #13253]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@57912 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 3 deletions

diff --git a/parse.y b/parse.y
index 8a800bbd50..5169c58d4d 100644
--- a/parse.y
+++ b/parse.y
@@ -6407,6 +6407,7 @@ parser_heredoc_identifier(struct parser_params *parser)
     int token = tSTRING_BEG;
     long len;
     int newline = 0;
+    int indent = 0;
 
     if (c == '-') {
 	c = nextc();
@@ -6415,8 +6416,7 @@ parser_heredoc_identifier(struct parser_params *parser)
     else if (c == '~') {
 	c = nextc();
 	func = STR_FUNC_INDENT;
-	heredoc_indent = INT_MAX;
-	heredoc_line_indent = 0;
+	indent = INT_MAX;
     }
     switch (c) {
       case '\'':
@@ -6455,7 +6455,7 @@ parser_heredoc_identifier(struct parser_params *parser)
 	if (!parser_is_identchar()) {
 	    pushback(c);
 	    if (func & STR_FUNC_INDENT) {
-		pushback(heredoc_indent > 0 ? '~' : '-');
+		pushback(indent > 0 ? '~' : '-');
 	    }
 	    return 0;
 	}
@@ -6478,6 +6478,8 @@ parser_heredoc_identifier(struct parser_params *parser)
 				  lex_lastline);		/* nd_orig */
     nd_set_line(lex_strterm, ruby_sourceline);
     ripper_flush(parser);
+    heredoc_indent = indent;
+    heredoc_line_indent = 0;
     return token;
 }