[PATCH 4/7] reply: Support --format-version

[Austin Clements <amdragon@MIT.EDU>]

---
 man/man1/notmuch-reply.1 |   21 +++++++++++++++++++++
 notmuch-reply.c          |    3 +++
 2 files changed, 24 insertions(+)

diff --git a/man/man1/notmuch-reply.1 b/man/man1/notmuch-reply.1
index fa04c9e..9fa1956 100644
--- a/man/man1/notmuch-reply.1
+++ b/man/man1/notmuch-reply.1
@@ -57,6 +57,16 @@ to create a reply message intelligently.
 Only produces In\-Reply\-To, References, To, Cc, and Bcc headers.
 .RE
 .RE
+
+.RS
+.TP 4
+.BR \-\-format-version=N
+
+Use the specified structured output format version.  This is intended
+for programs that invoke \fBnotmuch\fR(1) internally.  If omitted, the
+latest supported version will be used.
+.RE
+
 .RS
 .TP 4
 .BR \-\-reply\-to= ( all | sender )
@@ -99,6 +109,17 @@ formats do not.
 .RE
 .RE
 
+.SH EXIT STATUS
+
+This command supports the following special exit status codes
+
+.TP
+.B 20
+The requested format version is too old.
+.TP
+.B 21
+The requested format version is too new.
+
 .SH SEE ALSO
 
 \fBnotmuch\fR(1), \fBnotmuch-config\fR(1), \fBnotmuch-count\fR(1),
diff --git a/notmuch-reply.c b/notmuch-reply.c
index 720749d..22c58ff 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -733,6 +733,7 @@ notmuch_reply_command (void *ctx, int argc, char *argv[])
 				  { "sexp", FORMAT_SEXP },
 				  { "headers-only", FORMAT_HEADERS_ONLY },
 				  { 0, 0 } } },
+	{ NOTMUCH_OPT_INT, &notmuch_format_version, "format-version", 0, 0 },
 	{ NOTMUCH_OPT_KEYWORD, &reply_all, "reply-to", 'r',
 	  (notmuch_keyword_t []){ { "all", TRUE },
 				  { "sender", FALSE },
@@ -759,6 +760,8 @@ notmuch_reply_command (void *ctx, int argc, char *argv[])
 	reply_format_func = notmuch_reply_format_default;
     }
 
+    notmuch_exit_if_unsupported_format ();
+
     config = notmuch_config_open (ctx, NULL, NULL);
     if (config == NULL)
 	return 1;
-- 
1.7.10.4