Message ID | DM6PR04MB6574BE4A4CB7FC83AB6E2C08EF5A9@DM6PR04MB6574.namprd04.prod.outlook.com |
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State | Deferred |
Delegated to: | Tom Rini |
Headers | show
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cli: Fix non-printable character handling
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diff --git a/common/cli_readline.c b/common/cli_readline.c index c7614a4c90..c481917d5e 100644 --- a/common/cli_readline.c +++ b/common/cli_readline.c @@ -637,6 +637,12 @@ int cli_readline_into_buffer(const char *const prompt, char *buffer, } else { char __maybe_unused buf[2]; + if (c <= 0x1f || c > 0x7f) { + /* all special characters shall be handled above; + otherwise output an alarm here without changing col */ + putc('\a'); + continue; + } /* * Echo input using puts() to force an * LCD flush if we are using an LCD