Don't try to determine interactivity if ui() called with interactive=False.
WSGI applications are not supposed to refer to sys.stdin. In ed6df6b1c29a,
hgweb and hgwebdir were fixed to pass interactive=False to their ui()'s, but
sys.stdin.isatty() was still called by the ui objects. This change makes sure
only the ui.fixconfig() method will call ui.isatty() (by making the
ui._readline() method, which is currently only called from ui.prompt(),
private). ui.fixconfig() is changed to let config files override the initial
interactivity setting, but not check isatty() if interactive=False was
specified in the creation of the ui.
quiet:
--- a/foo Mon Jan 12 13:46:40 1970 +0000
+++ b/foo Mon Jan 12 13:46:41 1970 +0000
@@ -1,1 +1,1 @@ bar
-bar
+foobar
normal:
diff -r 74de3f1392e2 -r b8b5f023a6ad foo
--- a/foo Mon Jan 12 13:46:40 1970 +0000
+++ b/foo Mon Jan 12 13:46:41 1970 +0000
@@ -1,1 +1,1 @@ bar
-bar
+foobar
verbose:
diff -r 74de3f1392e2 -r b8b5f023a6ad foo
--- a/foo Mon Jan 12 13:46:40 1970 +0000
+++ b/foo Mon Jan 12 13:46:41 1970 +0000
@@ -1,1 +1,1 @@ bar
-bar
+foobar
debug:
diff -r 74de3f1392e2d67856fb155963441f2610494e1a -r b8b5f023a6ad77fc378bd95cf3fa00cd1414d107 foo
--- a/foo Mon Jan 12 13:46:40 1970 +0000
+++ b/foo Mon Jan 12 13:46:41 1970 +0000
@@ -1,1 +1,1 @@ bar
-bar
+foobar