fix encoding issues with getchar

correctly raises on ^C and ^D
echo no longer raises encoding error

CHANGES.rst

@@ -7,7 +7,6 @@ Version 7.0
 
 Unreleased
 
--   ``click.getchar()`` now returns unicode in Python 3 on Windows, same as other platforms. (`#1108`_, `#1088`_, `#822`_, `#821`_, `#537`_)
 -   Drop support for Python 2.6 and 3.3. (`#976`_)
 -   Wrap ``click.Choice``'s missing message. (`#202`_, `#1000`_)
 -   Add native ZSH autocompletion support. (`#323`_, `#865`_)
@@ -23,10 +22,13 @@ Unreleased
 -   Added the ability to hide commands and options from help. (`#500`_)
 -   Document that options can be ``required=True``. (`#514`_, `#1022`_)
 -   Non-standalone calls to ``Context.exit`` return the exit code, rather than calling ``sys.exit``. (`#533`_, `#667`_)
+-   ``click.getchar()`` now returns unicode in Python 3 on Windows, same as other platforms. (`#537`_, `#821`_, `#822`_, `#1088`_, `#1108`_)
 -   Added ``FloatRange`` type. (`#538`_, `#553`_)
 -   Added support for bash completion of ``type=click.Choice`` for ``Options`` and ``Arguments``. (`#535`_)
 -   Only allow one positional arg for ``Argument`` parameter delcaration. (`#568`_, `#574`_, `#1014`_)
 -   Add ``case_sensitive=False`` as an option to Choice. (`#569`_)
+-   ``click.getchar()`` correctly raises ``KeyboardInterrupt`` on "^C" and ``EOFError`` on "^D" on Linux. (`#583`_)
+-   Fix encoding issue with ``click.getchar(echo=True)`` on Linux.
 -   ``param_hint`` in errors now derived from param itself. (`#598`_, `#704`_, `#709`_)
 -   Add a test that ensures that when an argument is formatted into a usage error, its metavar is used, not its name. (`#612`_)
 -   Allow setting ``prog_name`` as extra in ``CliRunner.invoke``. (`#616`_, `#999`_)
@@ -105,12 +107,14 @@ Unreleased
 .. _#514: https://github.com/pallets/click/issues/514
 .. _#533: https://github.com/pallets/click/pull/533
 .. _#535: https://github.com/pallets/click/issues/535
+.. _#537: https://github.com/pallets/click/issues/537
 .. _#538: https://github.com/pallets/click/pull/538
 .. _#553: https://github.com/pallets/click/pull/553
 .. _#557: https://github.com/pallets/click/pull/557
 .. _#568: https://github.com/pallets/click/issues/568
 .. _#569: https://github.com/pallets/click/issues/569
 .. _#574: https://github.com/pallets/click/issues/574
+.. _#583: https://github.com/pallets/click/issues/583
 .. _#598: https://github.com/pallets/click/issues/598
 .. _#612: https://github.com/pallets/click/pull/612
 .. _#616: https://github.com/pallets/click/issues/616
@@ -146,6 +150,8 @@ Unreleased
 .. _#809: https://github.com/pallets/click/pull/809
 .. _#816: https://github.com/pallets/click/pull/816
 .. _#819: https://github.com/pallets/click/pull/819
+.. _#821: https://github.com/pallets/click/issues/821
+.. _#822: https://github.com/pallets/click/issues/822
 .. _#842: https://github.com/pallets/click/pull/842
 .. _#860: https://github.com/pallets/click/issues/860
 .. _#862: https://github.com/pallets/click/issues/862
@@ -206,7 +212,9 @@ Unreleased
 .. _#1058: https://github.com/pallets/click/pull/1058
 .. _#1059: https://github.com/pallets/click/pull/1059
 .. _#1061: https://github.com/pallets/click/pull/1061
+.. _#1088: https://github.com/pallets/click/issues/1088
 .. _#1105: https://github.com/pallets/click/pull/1105
+.. _#1108: https://github.com/pallets/click/pull/1108
 
 
 Version 6.7

click/_termui_impl.py

@@ -527,11 +527,11 @@ def _unquote_file(url):
 
 
 def _translate_ch_to_exc(ch):
-    if ch == '\x03':
+    if ch == u'\x03':
         raise KeyboardInterrupt()
-    if ch == '\x04' and not WIN:  # Unix-like, Ctrl+D
+    if ch == u'\x04' and not WIN:  # Unix-like, Ctrl+D
         raise EOFError()
-    if ch == '\x1a' and WIN:      # Windows, Ctrl+Z
+    if ch == u'\x1a' and WIN:      # Windows, Ctrl+Z
         raise EOFError()
 
 
@@ -612,7 +612,8 @@ def raw_terminal():
     def getchar(echo):
         with raw_terminal() as fd:
             ch = os.read(fd, 32)
+            ch = ch.decode(get_best_encoding(sys.stdin), 'replace')
             if echo and isatty(sys.stdout):
                 sys.stdout.write(ch)
             _translate_ch_to_exc(ch)
-            return ch.decode(get_best_encoding(sys.stdin), 'replace')
+            return ch