`^A` now accepts an optional integer to specify the message severityHEADmaster-fmsbw-cimaster

* I.e. you can now log warnings and errors from SciTECO code as well.
* We do not need a version of ^A accepting code points, since this is
  supported by ^T already.

2 files changed, 31 insertions, 8 deletions

diff --git a/src/interface.h b/src/interface.h
index 54f807b..3ee8742 100644
--- a/src/interface.h
+++ b/src/interface.h
@@ -60,10 +60,11 @@ GOptionGroup *teco_interface_get_options(void);
 void teco_interface_init_color(guint color, guint32 rgb);
 
 typedef enum {
-	TECO_MSG_USER,
+	TECO_MSG_USER = 0,
 	TECO_MSG_INFO,
 	TECO_MSG_WARNING,
-	TECO_MSG_ERROR
+	TECO_MSG_ERROR,
+	TECO_MSG_MAX = TECO_MSG_ERROR
 } teco_msg_t;
 
 extern teco_msg_t teco_interface_msg_level;
diff --git a/src/stdio-commands.c b/src/stdio-commands.c
index abb6566..123d0ea 100644
--- a/src/stdio-commands.c
+++ b/src/stdio-commands.c
@@ -255,17 +255,39 @@ teco_state_print_string_initial(teco_machine_main_t *ctx, GError **error)
 static teco_state_t *
 teco_state_print_string_done(teco_machine_main_t *ctx, teco_string_t str, GError **error)
 {
-	teco_interface_msg_literal(TECO_MSG_USER, str.data, str.len);
+	teco_int_t type;
+
+	if (!teco_expressions_pop_num_calc(&type, TECO_MSG_USER, error))
+		return NULL;
+	if (type < TECO_MSG_USER || type > TECO_MSG_MAX) {
+		g_set_error_literal(error, TECO_ERROR, TECO_ERROR_FAILED,
+		                    "Invalid message level specified for <^A>");
+		return NULL;
+	}
+
+	teco_interface_msg_literal(type, str.data, str.len);
 	return &teco_state_start;
 }
 
 /*$ "^A" ":^A" print "print string"
- * ^A<string>^A -- Print string as message
- * @^A/string/
- * :^A<string>^A
+ * [type]^A<string>^A -- Print string as message
+ * [type]@^A/string/
+ * [type]:^A<string>^A
  *
- * Print <string> as a message, i.e. in the message line
- * in interactive mode and if possible on the terminal (stdout) as well.
+ * Print <string> as a message with severity <type>, i.e. in the
+ * message line in interactive mode and if possible on the terminal
+ * as well.
+ * The following message levels are supported:
+ * .IP 0: 3
+ * User-level message:
+ * They are written without any prefixes directly to stdout.
+ * This is the default if <type> is omitted.
+ * .IP 1:
+ * Info-level message
+ * .IP 2:
+ * Warnings
+ * .IP 3:
+ * Errors
  *
  * \fB^A\fP differs from all other commands in the way <string>
  * is terminated.