Fix bash completion when defaults are present and the way subcommands…

… are handled.

This makes the completion logic behave the same way the paser does.
Fixes pallets#925
Fixes pallets#919

CHANGES.rst

@@ -82,6 +82,7 @@ Unreleased
 -   Document how ``auto_envar_prefix`` works with command groups. (`#1011`_)
 -   Don't add newlines by default for progress bars. (`#1013`_)
 -   Document that parameter names are lowercased by default. (`#1055`_)
+-   Hide hidden commands and options from completion (`#1058`_)
 -   Subcommands that are named by the function now automatically have the underscore replaced with a dash. If you register a function named ``my_command`` it becomes ``my-command`` in the command line interface.
 
 .. _#202: https://github.com/pallets/click/issues/202
@@ -187,6 +188,7 @@ Unreleased
 .. _#1022: https://github.com/pallets/click/pull/1022
 .. _#1027: https://github.com/pallets/click/pull/1027
 .. _#1055: https://github.com/pallets/click/pull/1055
+.. _#1058: https://github.com/pallets/click/issues/1058
 
 
 Version 6.7

click/_bashcomplete.py

@@ -72,7 +72,7 @@ def resolve_ctx(cli, prog_name, args):
     :param args: full list of args
     :return: the final context/command parsed
     """
-    ctx = cli.make_context(prog_name, args, resilient_parsing=True)
+    ctx = cli.make_context(prog_name, args, resilient_parsing=True, ignore_default_values=True)
     args = ctx.protected_args + ctx.args
     while args:
         if isinstance(ctx.command, MultiCommand):
@@ -260,4 +260,4 @@ def bashcomplete(cli, prog_name, complete_var, complete_instr):
         return True
     elif complete_instr == 'complete' or complete_instr == 'complete_zsh':
         return do_complete(cli, prog_name, complete_instr == 'complete_zsh')
-    return False
+    return False

click/core.py

@@ -215,7 +215,7 @@ def __init__(self, command, parent=None, info_name=None, obj=None,
                  resilient_parsing=False, allow_extra_args=None,
                  allow_interspersed_args=None,
                  ignore_unknown_options=None, help_option_names=None,
-                 token_normalize_func=None, color=None):
+                 token_normalize_func=None, color=None, ignore_default_values=False):
         #: the parent context or `None` if none exists.
         self.parent = parent
         #: the :class:`Command` for this context.
@@ -317,6 +317,12 @@ def __init__(self, command, parent=None, info_name=None, obj=None,
         #: will be ignored. Useful for completion.
         self.resilient_parsing = resilient_parsing
 
+        #: Indicates that default values should be ignored.
+        #: Useful for completion.
+
+        #: .. versionadded:: 7.0
+        self.ignore_default_values = ignore_default_values
+
         # If there is no envvar prefix yet, but the parent has one and
         # the command on this level has a name, we can expand the envvar
         # prefix automatically.