zsh completion: disable defaults and verbose output when completing
If ui.verbose is set to True in hgrc, commands used to provide completions
would yield bad results. For example, qpush completion would include the
patch numbers and statuses as returned by qunapplied -v, instead of just
the patch names.
Defaults are also disabled when completing to prevent similar issues when
an option is set that changes a command's output.
% no bookmarks
no bookmarks set
% bookmark rev -1
% list bookmarks
* X -1:000000000000
% bookmark X moved to rev 0
* X 0:f7b1eb17ad24
% look up bookmark
changeset: 0:f7b1eb17ad24
tag: X
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 0
% second bookmark for rev 0
% bookmark rev -1 again
% list bookmarks
* X2 0:f7b1eb17ad24
* X 0:f7b1eb17ad24
Y -1:000000000000
% bookmarks X and X2 moved to rev 1, Y at rev -1
* X2 1:925d80f479bb
* X 1:925d80f479bb
Y -1:000000000000
% bookmark rev 0 again
% bookmarks X and X2 moved to rev 2, Y at rev -1, Z at rev 0
* X2 2:0316ce92851d
* X 2:0316ce92851d
Z 0:f7b1eb17ad24
Y -1:000000000000
% rename nonexistent bookmark
abort: a bookmark of this name does not exist
% rename to existent bookmark
abort: a bookmark of the same name already exists
% force rename to existent bookmark
% list bookmarks
* X2 2:0316ce92851d
* Y 2:0316ce92851d
Z 0:f7b1eb17ad24
% rename without new name
abort: new bookmark name required
% delete without name
abort: bookmark name required
% delete nonexistent bookmark
abort: a bookmark of this name does not exist
% bookmark name with spaces should be stripped
% list bookmarks
* X2 2:0316ce92851d
* Y 2:0316ce92851d
Z 0:f7b1eb17ad24
* x y 2:0316ce92851d
% look up stripped bookmark name
changeset: 2:0316ce92851d
tag: X2
tag: Y
tag: tip
tag: x y
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 2
% reject bookmark name with newline
abort: bookmark name cannot contain newlines
% bookmark with existing name
abort: a bookmark of the same name already exists
% force bookmark with existing name
% list bookmarks
* X2 2:0316ce92851d
* Y 2:0316ce92851d
* Z 2:0316ce92851d
* x y 2:0316ce92851d
% revision but no bookmark name
abort: bookmark name required