[U-Boot] [PATCH 2/4] Add ctrlc_ignore environment variable to ignore Ctrl-C

[Wolfgang Denk]

Dear Simon Glass,

In message <1401992872-31985-3-git-send-email-sjg at chromium.org> you wrote:
> Sometimes it is useful to ignore Ctrl-C, because checking for it causes the
> CLI to drop characters. In particular for tests involving sandbox, where
> input commands are piped in, some commands will call ctrlc() which will
> drop characters from the test script.

Why would that be the case?

If this happens, I consider it a bug that should be fixed, and not
papered over.

> Add a CONFIG_SYS_CTRLC_IGNORE option which enables this variable. If the
> variable is present (e.g. "setenv ctrlc_ignore ignore") then no checking
> for Ctrl-C will be performed.

I dislike this idea. It looks wrong to me.  Can we not fix the problem
at the root cause?

Best regards,

Wolfgang Denk

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