anno: Minor improvements.

* mh/mh_init.c (mh_init): Make sure stdin is open.
* mh/anno.c (main): Use mu_stream_t to read the answer from stdin.
Do not display prompt if stdin is not connected to a tty.
* mh/tests/anno.at: New testcase.
* mh/tests/Makefile.am (TESTSUITE_AT): Add anno.at
* mh/tests/testsuite.at: Include anno.at.

* doc/texinfo/mu-mh.texi: Document the changes in the behavior of anno.

@@ -211,6 +211,16 @@ For more information, please see @xref{reply_regex function}.
 @subsubsection Differences in MH Program Behavior
 
 @table @command
+@item anno
+
+The prompt in interactive mode is @samp{Component name:}, instead
+of @samp{Enter component name:} displayed by the RAND @command{anno}.
+
+If a @option{-component field} is not specified and standard input
+is not connected to a terminal, @command{anno} does not display
+the prompt before reading the component from the standard input.
+RAND @command{anno} displays the prompt anyway.
+
 @item burst
 
 The utility is able to burst both RFC 934 digest messages and MIME

@@ -109,7 +109,7 @@ main (int argc, char **argv)
   mu_mailbox_t mbox;
   mh_msgset_t msgset;
   size_t len;
-  
+
   MU_APP_INIT_NLS ();
 
   mh_argp_init ();
@@ -120,11 +120,37 @@ main (int argc, char **argv)
 
   if (!component)
     {
-      size_t n;
+      mu_stream_t in;
+      size_t size = 0;
+      char *p;
       
-      printf (_("Component name: "));
-      if (getline (&component, &n, stdin) <= 0 || *component == 0)
-	exit (1);
+      rc = mu_stdio_stream_create (&in, MU_STDIN_FD, 0);
+      if (rc)
+	{
+	  mu_error (_("cannot create input stream: %s"), mu_strerror (rc));
+	  exit (1);
+	}
+
+      if (isatty (0))
+	{
+	  printf (_("Component name: "));
+	  fflush (stdout);
+	}
+      rc = mu_stream_getline (in, &component, &size, NULL);
+      mu_stream_destroy (&in);
+      if (rc)
+	{
+	  mu_error (_("error reading input stream: %s"), mu_strerror (rc));
+	  exit (1);
+	}
+      p = mu_str_stripws (component);
+      if (*p == 0)
+	{
+	  mu_error (_("invalid component name"));
+	  exit (1);
+	}
+      if (p > component)
+	memmove (component, p, strlen (p) + 1);
     }
 
   if (!anno_text && !anno_date)

@@ -40,9 +40,19 @@ char mh_list_format[] =
   "%<(zero)%17(decode(friendly{from}))%>"
   "  %(decode{subject})%<{body}<<%{body}>>%>";
 
+/* Make sure stdin is open.  If not, connect it to /dev/null. */
+static void
+mh_ensure_stdin ()
+{
+  int fd = open ("/dev/null", O_RDONLY);
+  if (fd != 0)
+    close (fd);
+}
+
 void
 mh_init ()
 {
+  mh_ensure_stdin ();
   /* Register all mailbox and mailer formats */
   mu_register_all_formats ();
 #ifdef WITH_TLS

@@ -39,6 +39,7 @@ $(srcdir)/package.m4: $(top_srcdir)/configure.ac
 ## ------------ ##
 
 TESTSUITE_AT = \
+ anno.at\
  folder.at\
  inc.at\
  mark.at\

+# This file is part of GNU Mailutils. -*- Autotest -*-
+# Copyright (C) 2010 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+m4_pushdef[MH_KEYWORDS],[anno])
+
+MH_CHECK([anno],[anno00],[
+MUT_MBCOPY($abs_top_srcdir/testsuite/mh/mbox1,[Mail/inbox])
+echo "Current-Folder: inbox" > Mail/context
+echo "cur: 1" > Mail/inbox/.mh_sequences
+echo Replied | anno || exit $?
+sed -n '1{s/Replied: .*/REPLIED/p}' Mail/inbox/1
+],
+[0],
+[REPLIED
+])
+
+MH_CHECK([anno -component],[anno01 anno-component],[
+MUT_MBCOPY($abs_top_srcdir/testsuite/mh/mbox1,[Mail/inbox])
+echo "Current-Folder: inbox" > Mail/context
+anno -component Replied 1 || exit $?
+sed -n '1{s/Replied: .*/REPLIED/p}' Mail/inbox/1
+],
+[0],
+[REPLIED
+])
+
+MH_CHECK([anno -component -text],[anno02 anno-component-text],[
+MUT_MBCOPY($abs_top_srcdir/testsuite/mh/mbox1,[Mail/inbox])
+echo "Current-Folder: inbox" > Mail/context
+anno -component Replied -text OK 1 || exit $?
+sed -n '3,$d;/Replied/{s/Replied: [[A-Z][a-z][a-z], [0-9][0-9] [A-Z][a-z][a-z] [0-9][0-9][0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9] .*]/Replied: DATE/;p}' Mail/inbox/1
+],
+[0],
+[Replied: OK
+Replied: DATE
+])
+
+MH_CHECK([anno -component -text -nodate],[anno03 anno-component-text-nodate],[
+MUT_MBCOPY($abs_top_srcdir/testsuite/mh/mbox1,[Mail/inbox])
+echo "Current-Folder: inbox" > Mail/context
+anno -component Replied -text OK -nodate 1 || exit $?
+sed -n '3,$d;/Replied/{s/Replied: [[A-Z][a-z][a-z], [0-9][0-9] [A-Z][a-z][a-z] [0-9][0-9][0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9] .*]/Replied: DATE/;p}' Mail/inbox/1
+],
+[0],
+[Replied: OK
+])
+
+m4_popdef[MH_KEYWORDS])
+# End of anno.at

@@ -51,3 +51,4 @@ m4_include([mhparam.at])
 m4_include([refile.at])
 m4_include([mhpath.at])
 m4_include([mhl.at])
+m4_include([anno.at])