tests/test-update-branches.out

color: labeled text should be passed to ui.write() as ui.labeled

Some implementations of ui.label() (HTML versions in particular) must escape
the provided text and then markup the text with their tags.  When this marked
up text is then passed to ui.write(), we must label the text as 'ui.labeled'
so the implementation knows not to escape it a second time (exposing the initial
markup).

This required the addition of a 'ui.plain' label for text that is purposefully
not marked up.

I was a little pedantic here, passing even ' ' strings to ui.label() when it
would be included with other labeled text in a ui.write() call.   But it seemed
appropriate to lean to the side of caution.

% initial repo state

@  5:e1bb631146ca  b1
|
o  4:a4fdb3b883c4 0:b608b9236435  b1
|
| o  3:4b57d2520816 1:44592833ba9f
| |
| | o  2:063f31070f65
| |/
| o  1:44592833ba9f
|/
o  0:b608b9236435

% norevtest none clean linear 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=5
% norevtest none clean same 2
abort: crosses branches (use 'hg merge' or use 'hg update -c')
parent=2
% revtest none clean linear 1 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=2
% revtest none clean same 2 3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=3
% revtest none clean cross 3 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=4
% revtest none dirty linear 1 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=2
M foo
% revtest none dirty same 2 3
abort: crosses branches (use 'hg merge' to merge or use 'hg update -C' to discard changes)
parent=2
M foo
% revtest none dirty cross 3 4
abort: crosses branches (use 'hg merge' to merge or use 'hg update -C' to discard changes)
parent=3
M foo
% revtest -C dirty linear 1 2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=2
% revtest -c dirty linear 1 2
abort: uncommitted local changes
parent=1
M foo
% norevtest -c clean same 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=3
% revtest -cC dirty linear 1 2
abort: cannot specify both -c/--check and -C/--clean
parent=1
M foo