output of # in TAG directive0.16.4

fixes issue #307

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7 files changed, 38 insertions, 15 deletions

diff --git a/CHANGES b/CHANGES
index 81dbe62..14c1c67 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+[0, 16, 4]: 2019-08-16
+  - fix output of TAG directives with # (reported by `Thomas Smith
+    <https://bitbucket.org/%7Bd4c57a72-f041-4843-8217-b4d48b6ece2f%7D/>`__)
+
+
 [0, 16, 3]: 2019-08-15
   - move setting of version based on YAML directive to scanner, allowing to
     check for file version during TAG directive scanning
diff --git a/README.rst b/README.rst
index 04f83b7..f467618 100644
--- a/README.rst
+++ b/README.rst
@@ -4,8 +4,8 @@ ruamel.yaml
 
 ``ruamel.yaml`` is a YAML 1.2 loader/dumper package for Python.
 
-:version:       0.16.3
-:updated:       2019-08-15
+:version:       0.16.4
+:updated:       2019-08-16
 :documentation: http://yaml.readthedocs.io
 :repository:    https://bitbucket.org/ruamel/yaml
 :pypi:          https://pypi.org/project/ruamel.yaml/
@@ -54,6 +54,11 @@ ChangeLog
 
 .. should insert NEXT: at the beginning of line for next key (with empty line)
 
+0.16.4 (2019-08-16):
+  - fix output of TAG directives with # (reported by `Thomas Smith
+    <https://bitbucket.org/%7Bd4c57a72-f041-4843-8217-b4d48b6ece2f%7D/>`__)
+
+
 0.16.3 (2019-08-15):
   - split construct_object
   - change stuff back to keep mypy happy
diff --git a/__init__.py b/__init__.py
index fa58ebc..a04077d 100644
--- a/__init__.py
+++ b/__init__.py
@@ -7,8 +7,8 @@ if False:  # MYPY
 
 _package_data = dict(
     full_package_name='ruamel.yaml',
-    version_info=(0, 16, 3),
-    __version__='0.16.3',
+    version_info=(0, 16, 4),
+    __version__='0.16.4',
     author='Anthon van der Neut',
     author_email='a.van.der.neut@ruamel.eu',
     description='ruamel.yaml is a YAML parser/emitter that supports roundtrip preservation of comments, seq/map flow style, and map key order',  # NOQA
diff --git a/_doc/_static/pypi.svg b/_doc/_static/pypi.svg
index 7e4cfcd..4b1b796 100644
--- a/_doc/_static/pypi.svg
+++ b/_doc/_static/pypi.svg
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="86" height="20"><linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="a"><rect width="86" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#a)"><path fill="#555" d="M0 0h33v20H0z"/><path fill="#007ec6" d="M33 0h53v20H33z"/><path fill="url(#b)" d="M0 0h86v20H0z"/></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"> <text x="175" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="230">pypi</text><text x="175" y="140" transform="scale(.1)" textLength="230">pypi</text><text x="585" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="430">0.16.3</text><text x="585" y="140" transform="scale(.1)" textLength="430">0.16.3</text></g> </svg>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="86" height="20"><linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="a"><rect width="86" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#a)"><path fill="#555" d="M0 0h33v20H0z"/><path fill="#007ec6" d="M33 0h53v20H33z"/><path fill="url(#b)" d="M0 0h86v20H0z"/></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"> <text x="175" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="230">pypi</text><text x="175" y="140" transform="scale(.1)" textLength="230">pypi</text><text x="585" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="430">0.16.4</text><text x="585" y="140" transform="scale(.1)" textLength="430">0.16.4</text></g> </svg>
diff --git a/_test/test_issues.py b/_test/test_issues.py
index f2b5d74..673ba45 100644
--- a/_test/test_issues.py
+++ b/_test/test_issues.py
@@ -869,6 +869,16 @@ class TestIssues:
         """
         d = na_round_trip(inp)  # NOQA
 
+    def test_issue_307(self):
+        inp = """
+        %YAML 1.2
+        %TAG ! tag:example.com,2019/path#
+        ---
+        null
+        ...
+        """
+        d = na_round_trip(inp)  # NOQA
+
 #    @pytest.mark.xfail(strict=True, reason='bla bla', raises=AssertionError)
 #    def test_issue_ xxx(self):
 #        inp = """
diff --git a/emitter.py b/emitter.py
index 02100dd..73fbe05 100644
--- a/emitter.py
+++ b/emitter.py
@@ -169,7 +169,7 @@ class Emitter(object):
         self.prefixed_colon = self.colon if prefix_colon is None else prefix_colon + self.colon
         # single entry mappings in flow sequence
         self.brace_single_entry_mapping_in_flow_sequence = (
-            brace_single_entry_mapping_in_flow_sequence
+         brace_single_entry_mapping_in_flow_sequence
         )  # NOQA
 
         # Formatting details.
@@ -410,8 +410,11 @@ class Emitter(object):
                 and self.sequence_context
             ):
                 self.sequence_context = False
-            if root and isinstance(self.event, ScalarEvent) \
-               and not self.scalar_after_indicator:
+            if (
+                root
+                and isinstance(self.event, ScalarEvent)
+                and not self.scalar_after_indicator
+            ):
                 self.write_indent()
             self.process_tag()
             if isinstance(self.event, ScalarEvent):
@@ -917,14 +920,14 @@ class Emitter(object):
         start = end = 0
         if prefix[0] == u'!':
             end = 1
+        ch_set = u"-;/?:@&=+$,_.~*'()[]"
+        if self.dumper:
+            version = getattr(self.dumper, 'version', (1, 2))
+            if version is None or version >= (1, 2):
+                ch_set += u'#'
         while end < len(prefix):
             ch = prefix[end]
-            if (
-                u'0' <= ch <= u'9'
-                or u'A' <= ch <= u'Z'
-                or u'a' <= ch <= u'z'
-                or ch in u"-;/?!:@&=+$,_.~*'()[]"
-            ):
+            if u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' or ch in ch_set:
                 end += 1
             else:
                 if start < end:
diff --git a/scanner.py b/scanner.py
index 885bf22..df85ae0 100644
--- a/scanner.py
+++ b/scanner.py
@@ -1677,7 +1677,7 @@ class Scanner(object):
             or 'A' <= ch <= 'Z'
             or 'a' <= ch <= 'z'
             or ch in "-;/?:@&=+$,_.!~*'()[]%"
-            or ((self.scanner_processing_version > (1, 1)) and ch == "#")
+            or ((self.scanner_processing_version > (1, 1)) and ch == '#')
         ):
             if ch == '%':
                 chunks.append(self.reader.prefix(length))