[groff] 12/35: [grotty]: Warn of unrecognized device commands.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 8571e2d05d6b657471d5cfbf7938fd1c8ecf0ee4
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Wed Feb 16 14:48:17 2022 +1100

    [grotty]: Warn of unrecognized device commands.
    
    * src/devices/grotty/tty.cpp (tty_printer::special): Warn upon
      encountering unrecognized device control commands using the 'tty:'
      tag.
---
 ChangeLog                  | 6 ++++++
 src/devices/grotty/tty.cpp | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 97b9cd8a..87e6ca4c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2022-02-16  G. Branden Robinson <g.branden.robinson@gmail.com>
+
+       * src/devices/grotty/tty.cpp (tty_printer::special): Warn upon
+       encountering unrecognized device control commands using the
+       'tty:' tag.
+
 2022-02-16  G. Branden Robinson <g.branden.robinson@gmail.com>
 
        [grotty]: Remove 'sgr' device control command.
diff --git a/src/devices/grotty/tty.cpp b/src/devices/grotty/tty.cpp
index 5d94310a..eced8e60 100644
--- a/src/devices/grotty/tty.cpp
+++ b/src/devices/grotty/tty.cpp
@@ -447,6 +447,8 @@ void tty_printer::special(char *arg, const environment 
*env, char type)
   }
   if (strncmp(command, "link", p - command) == 0)
     special_link(p, env);
+  else
+    warning("unrecognized X command '%1' ignored", command);
 }
 
 // Produce an OSC 8 hyperlink.  Given ditroff input of the form: