Enable backgrounding a single <mail> function.

Backgrounding exits to the index menu.  Re-invoking <mail> will resume
the backgrounded session, if one exists, otherwise start a new
session.

This is just to get basic support going.  Multiple background edits, a
landing page, a background compose menu list will be added next.

1 files changed, 27 insertions, 0 deletions

diff --git a/background.h b/background.h
new file mode 100644
index 00000000..afdde808
--- /dev/null
+++ b/background.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2020 Kevin J. McCarthy <kevin@8t8.us>
+ *
+ *     This program 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 2 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program 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 this program; if not, write to the Free Software
+ *     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef _BACKGROUND_H
+#define _BACKGROUND_H 1
+
+WHERE SEND_CONTEXT *BackgroundProcess;
+
+int mutt_background_edit_file (SEND_CONTEXT *sctx, const char *editor,
+                               const char *filename);
+
+#endif