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+From: Austin Clements <amdragon@MIT.EDU>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH 03/10] show: Support --use-schema\r
+Date: Sat, 1 Dec 2012 21:39:55 -0500\r
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+\r
+---\r
+ man/man1/notmuch-show.1 | 20 ++++++++++++++++++++\r
+ notmuch-client.h | 2 ++\r
+ notmuch-show.c | 3 +++\r
+ 3 files changed, 25 insertions(+)\r
+\r
+diff --git a/man/man1/notmuch-show.1 b/man/man1/notmuch-show.1\r
+index 4481f21..e2fd0c2 100644\r
+--- a/man/man1/notmuch-show.1\r
++++ b/man/man1/notmuch-show.1\r
+@@ -108,6 +108,15 @@ message.\r
+ \r
+ .RS 4\r
+ .TP 4\r
++.BR \-\-use-schema=N\r
++\r
++Use the specified structured output schema version. This is intended\r
++for programs that invoke \fBnotmuch\fR(1) internally. If omitted, the\r
++latest supported version will be used.\r
++.RE\r
++\r
++.RS 4\r
++.TP 4\r
+ .B \-\-part=N\r
+ \r
+ Output the single decoded MIME part N of a single message. The search\r
+@@ -181,6 +190,17 @@ column of output from the\r
+ .B notmuch search\r
+ command.\r
+ \r
++.SH EXIT STATUS\r
++\r
++This command supports the following special exit status codes\r
++\r
++.TP\r
++.B 20\r
++The requested schema version is too old.\r
++.TP\r
++.B 21\r
++The requested schema version is too new.\r
++\r
+ .SH SEE ALSO\r
+ \r
+ \fBnotmuch\fR(1), \fBnotmuch-config\fR(1), \fBnotmuch-count\fR(1),\r
+diff --git a/notmuch-client.h b/notmuch-client.h\r
+index 95c4dd7..d931bbf 100644\r
+--- a/notmuch-client.h\r
++++ b/notmuch-client.h\r
+@@ -142,6 +142,8 @@ chomp_newline (char *str)\r
+ #define NOTMUCH_SCHEMA_CUR 1\r
+ /* The minimum schema version supported by the "search" command. */\r
+ #define NOTMUCH_SCHEMA_SEARCH 1\r
++/* The minimum schema version supported by the "show" command. */\r
++#define NOTMUCH_SCHEMA_SHOW 1\r
+ \r
+ /* The schema version requested by the caller on the command line. If\r
+ * no schema version is requested, this should be set to\r
+diff --git a/notmuch-show.c b/notmuch-show.c\r
+index 2fa2292..9d1f7c7 100644\r
+--- a/notmuch-show.c\r
++++ b/notmuch-show.c\r
+@@ -1059,6 +1059,7 @@ notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[]))\r
+ { "mbox", NOTMUCH_FORMAT_MBOX },\r
+ { "raw", NOTMUCH_FORMAT_RAW },\r
+ { 0, 0 } } },\r
++ { NOTMUCH_OPT_INT, ¬much_schema_version, "use-schema", 0, 0 },\r
+ { NOTMUCH_OPT_KEYWORD, &exclude, "exclude", 'x',\r
+ (notmuch_keyword_t []){ { "true", EXCLUDE_TRUE },\r
+ { "false", EXCLUDE_FALSE },\r
+@@ -1118,6 +1119,8 @@ notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[]))\r
+ break;\r
+ }\r
+ \r
++ notmuch_exit_if_unsupported_schema ("show", NOTMUCH_SCHEMA_SHOW);\r
++\r
+ /* Default is entire-thread = FALSE except for format=json. */\r
+ if (entire_thread == ENTIRE_THREAD_DEFAULT) {\r
+ if (format == &format_json)\r
+-- \r
+1.7.10.4\r
+\r