[PATCH 4 of 5 V2] ui: echo prompt choice only if formatted output is acceptable

[Yuya Nishihara]

# HG changeset patch
# User Yuya Nishihara <yuya at tcha.org>
# Date 1412950877 -32400
#      Fri Oct 10 23:21:17 2014 +0900
# Node ID 6dcb36c1781c7afbdcee20c793be20e90854e391
# Parent  80977d0b038a9a42a9b6819e77b80d343c1f711e
ui: echo prompt choice only if formatted output is acceptable

9ab18a912c44 is nice for test output, but it also affects command-server
clients or scripts that have to parse the output.  So enables it only if
formatted output is acceptable.

This should cover most of command-server clients but chg.

diff --git a/mercurial/ui.py b/mercurial/ui.py
--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -684,7 +684,8 @@ class ui(object):
                 r = default
             # sometimes self.interactive disagrees with isatty,
             # show response provided on stdin when simulating
-            if not self._isatty(self.fin):
+            # but not for commandserver and other scripting
+            if not self._isatty(self.fin) and self.formatted():
                 self.write(r, "\n")
             return r
         except EOFError:
diff --git a/tests/test-diff-color.t b/tests/test-diff-color.t
--- a/tests/test-diff-color.t
+++ b/tests/test-diff-color.t
@@ -69,6 +69,7 @@ diffstat
   $ cat <<EOF >> $HGRCPATH
   > record =
   > [ui]
+  > formatted = true
   > interactive = true
   > [diff]
   > git = True
diff --git a/tests/test-issue3084.t b/tests/test-issue3084.t
--- a/tests/test-issue3084.t
+++ b/tests/test-issue3084.t
@@ -2,6 +2,8 @@
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > largefiles =
+  > [ui]
+  > formatted = true
   > EOF
 
 Create the repository outside $HOME since largefiles write to
diff --git a/tests/test-keyword.t b/tests/test-keyword.t
--- a/tests/test-keyword.t
+++ b/tests/test-keyword.t
@@ -6,6 +6,7 @@
   > record =
   > transplant =
   > [ui]
+  > formatted = true
   > interactive = true
   > EOF
 
diff --git a/tests/test-largefiles-update.t b/tests/test-largefiles-update.t
--- a/tests/test-largefiles-update.t
+++ b/tests/test-largefiles-update.t
@@ -3,6 +3,7 @@ directory (and ".hg/largefiles/dirstate"
 
   $ cat >> $HGRCPATH <<EOF
   > [ui]
+  > formatted = true
   > merge = internal:fail
   > [extensions]
   > largefiles =
diff --git a/tests/test-merge-prompt.t b/tests/test-merge-prompt.t
--- a/tests/test-merge-prompt.t
+++ b/tests/test-merge-prompt.t
@@ -65,6 +65,7 @@ Interactive merge:
 
   $ cat <<EOF >> $HGRCPATH
   > [ui]
+  > formatted = true
   > interactive = true
   > EOF
 
diff --git a/tests/test-mq-qrefresh-interactive.t b/tests/test-mq-qrefresh-interactive.t
--- a/tests/test-mq-qrefresh-interactive.t
+++ b/tests/test-mq-qrefresh-interactive.t
@@ -2,6 +2,7 @@ Create configuration
 
   $ cat <<EOF >> $HGRCPATH
   > [ui]
+  > formatted = true
   > interactive = true
   > EOF
 
diff --git a/tests/test-mq-subrepo.t b/tests/test-mq-subrepo.t
--- a/tests/test-mq-subrepo.t
+++ b/tests/test-mq-subrepo.t
@@ -284,6 +284,7 @@ handle subrepos safely on qrecord
   $ mkrepo repo-2499-qrecord
   $ cat <<EOF >> .hg/hgrc
   > [ui]
+  > formatted = true
   > interactive = true
   > EOF
   $ testadd qrecord -m0 0.diff <<EOF
diff --git a/tests/test-patchbomb.t b/tests/test-patchbomb.t
--- a/tests/test-patchbomb.t
+++ b/tests/test-patchbomb.t
@@ -67,7 +67,8 @@ Mercurial-patchbomb/.* -> Mercurial-patc
   +a
   
 
-  $ hg --config ui.interactive=1 email --confirm -n -f quux -t foo -c bar -r tip<<EOF
+  $ hg --config ui.formatted=1 --config ui.interactive=1 \
+  >   email --confirm -n -f quux -t foo -c bar -r tip <<EOF
   > n
   > EOF
   this patch series consists of 1 patches.
diff --git a/tests/test-qrecord.t b/tests/test-qrecord.t
--- a/tests/test-qrecord.t
+++ b/tests/test-qrecord.t
@@ -2,6 +2,7 @@ Create configuration
 
   $ cat <<EOF >> $HGRCPATH
   > [ui]
+  > formatted = true
   > interactive = true
   > EOF
 
diff --git a/tests/test-record.t b/tests/test-record.t
--- a/tests/test-record.t
+++ b/tests/test-record.t
@@ -2,6 +2,7 @@ Set up a repo
 
   $ cat <<EOF >> $HGRCPATH
   > [ui]
+  > formatted = true
   > interactive = true
   > [extensions]
   > record =
diff --git a/tests/test-transplant.t b/tests/test-transplant.t
--- a/tests/test-transplant.t
+++ b/tests/test-transplant.t
@@ -499,7 +499,8 @@ test interactive transplant
   |/
   o  0:17ab29e464c6
   
-  $ hg transplant -q --config ui.interactive=true -s ../t <<EOF
+  $ hg transplant -q --config ui.formatted=true --config ui.interactive=true \
+  >   -s ../t <<EOF
   > p
   > y
   > n
@@ -531,7 +532,8 @@ test interactive transplant
   |/
   o  17ab29e464c6
   
-  $ hg transplant -q --config ui.interactive=true -s ../t <<EOF
+  $ hg transplant -q --config ui.formatted=true --config ui.interactive=true \
+  >   -s ../t <<EOF
   > x
   > ?
   > y