[Nano-devel] multi-character escape sequences

[Benno Schulenberg]

On Mon, Jun 27, 2016, at 22:40, David Ramsey wrote:
> when it comes to
> escape sequences, there's no way to know when they're complete other
> than cessation of input.  (For example: If you press Esc O to toggle
> more-space mode, and then type A as part of the current buffer, that's
> one thing.  However, if input is stalled and keystrokes accumulate, as
> you put it, Esc O A will be read as a complete sequence, in which case
> it'll be interpreted as the Up arrow key, which users probably won't
> expect.)

I hadn't thought of that.  Luckily, though, there are just a few
characters that, when they follow Esc, will start a multi-character
escape sequence: O, o, [, and Esc itself.  So for all other characters
after an Escape, nano shouldn't even be trying to interpret it as a
multicharacter sequence.  See attached patch.  This fixes bug #48395
for me.

  https://savannah.gnu.org/bugs/?48395

Benno

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consider-only-a-few-as-sequence-starters.patch
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