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Re: [Nano-devel] Escape-Escape keyboard sequences

From: Benno Schulenberg
Subject: Re: [Nano-devel] Escape-Escape keyboard sequences
Date: Wed, 23 Mar 2016 17:28:14 +0100

Hi Mike,

Thanks for the patch.

On Wed, Mar 23, 2016, at 12:27, Mike Scalora wrote:
> After trying several workarounds unsuccessfully, I've created a patch for
> nano to support some escape sequences used by iTerm, a terminal program on
> the Mac that is very popular among programmers.

Do you mean iTerm sec, or iTerm2?  Or doesn't that make a

> I'm happy to go into more detail why I think this patch should be accepted

Yes, please.

> and I would be happy to revise the implementation.
> The escape sequences I added support for are:
> ^[^[[a  -  Option-<up-arrow> - home
> ^[^[[b  -  Option-<down-arrow> - end

Aren't Command+Left-arrow, Command+Riight-arrow used for
Home and End, that is: for beginning-of-line and end-of-line?

> ^[^[[c  -  Option-<right-arrow> - word_right
> ^[^[[d  -  Option-<left-arrow> - word_left
> nano then matches the use of these keystrokes by the command line editor.

You use lowercase letters here, but in the patch uppercase.
I suppose the latter ones are correct?

> Please let me know if you are open to accepting a patch for this and/or
> what adjustments you would like.

When the patch works, doesn't break anything, and adds
intuitive keybindings on one more terminal, it's fine with me.

About the patch itself...  I don't like the 'escescob' name.
First I made it into 'esc_esc', then into 'mac_esc' for more
contrast with 'escapes'.  If you find a still better name,
please use that.  Also, the thing can have just two values,
so better make it into a bool, for still more contrast with
'escapes'.  Further, instead of doing '&& !escescob', why
not put the escescob case first, then the setting of it,
and then the get_key_buffer_len() == 0 case?


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