fix #99: implement commented string_quote_removal

Author: WillForan

bashlex/heredoc.py

@@ -1,4 +1,5 @@
 from bashlex import ast, errors
+import re
 
 def gatherheredocuments(tokenizer):
     # if we're at the end of the input and we're not strict, allow skipping
@@ -11,9 +12,20 @@ def gatherheredocuments(tokenizer):
         redirnode, killleading = tokenizer.redirstack.pop(0)
         makeheredoc(tokenizer, redirnode, 0, killleading)
 
+
+def string_quote_removal(word):
+    """remove single quotes for heredoc
+    >>> string_quote_removal("'EOF'")
+    'EOF'
+    >>> string_quote_removal("EOF")
+    'EOF'
+    """
+    if m := re.search("^'(.*)'$", word):
+        word = m.group(1)
+    return word
+
 def makeheredoc(tokenizer, redirnode, lineno, killleading):
-    # redirword = string_quote_removal(redirectnode.word)
-    redirword = redirnode.output.word
+    redirword = string_quote_removal(redirnode.output.word)
     document = []
 
     startpos = tokenizer._shell_input_line_index

tests/test_parser.py

@@ -779,6 +779,23 @@ def test_heredoc_with_actual_doc(self):
                                 "delimited by end-of-file \\(wanted 'EOF'",
                                 parse, s)
 
+    def test_heredoc_singlequotes(self):
+        doc = 'foo\nbar\nEOF'
+        s = '''a <<'EOF'
+%s''' % doc
+
+        self.assertASTEquals(s,
+                commandnode("a <<'EOF'",
+                  wordnode('a'),
+                  redirectnode("<<'EOF'\n%s" % doc, None, '<<', wordnode("'EOF'"),
+                      heredocnode(doc))
+                ))
+
+        s = "a <<'EOF'\nb"
+        self.assertRaisesRegex(errors.ParsingError,
+                                "delimited by end-of-file \\(wanted 'EOF'",
+                                parse, s)
+
     def test_herestring(self):
         s = 'a <<<"b\nc"'
         self.assertASTEquals(s,