ui.prompt: Show prompt and selection in non-interactive mode

ui.prompt was completely silent in non-interactive mode, unless in verbose
mode. It is fine that it chooses the default automatically, but it is confusing
that the message and prompt shown interactively can't be found in scripted
tests.

The prompt and selection is now .write'ed instead of .note'ed.

mercurial/ui.py

@@ -277,7 +277,7 b' class ui(object):'
         insensitive. If ui is not interactive, the default is returned.
         """
         if not self.interactive():
-            self.note(msg, ' ', default, "\n")
+            self.write(msg, ' ', default, "\n")
             return default
         while True:
             try:

tests/test-merge-prompt.out

@@ -4,6 +4,10 b' 2 files updated, 0 files merged, 0 files'
 created new head
 
 # non-interactive merge
+ local changed file1 which remote deleted
+use (c)hanged version or (d)elete? c
+remote changed file2 which local deleted
+use (c)hanged version or leave (d)eleted? c
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 status:

tests/test-merge-tools.out

@@ -304,6 +304,8 b' true.priority=1'
 true.executable=cat
 # hg update -C 1
 # hg merge -r 2 --config ui.merge=internal:prompt
+ no tool found to merge f
+keep (l)ocal or take (o)ther? l
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 # cat f
@@ -512,6 +514,8 b' space'
 revision 2
 space
 merging f
+ output file f appears unchanged
+was merge successful (yn)? n
 merging f failed!
 0 files updated, 0 files merged, 0 files removed, 1 files unresolved
 use 'hg resolve' to retry unresolved file merges or 'hg up --clean' to abandon