From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] acme + plumber question
Date: Fri, 5 Oct 2012 10:25:33 -0400 [thread overview]
Message-ID: <37362a64c5aa9018d47a5ba6f10fcba5@brasstown.quanstro.net> (raw)
In-Reply-To: <5945870.BeEu8mdyey@coil>
> i've tried in two ways, both failed: data matches='foo
> ' (literal newline) and data matches='foo\n' (C-style escape sequence). first
> trips plumber's parser, the other doesn't match anything -- perhaps \n is
> taken literaly.
it looks like plumber's failure of vision. regexps don't take escapes like that.
and on the other hand you can't say \ + literal newline, either. plumber
misparses that.
however, i thought of a really sneaky cheat, that is almost correct. since
\n is 0a, and we almost never see 09 or 0b (ht and vt), we could build a
sneaky character class to elude the parser:
data matches 'error[ -\v]'
plumb start window
and i've verified this does work on plan 9. a proper fix would be to
change the string parser in plumber to convert '\' + 'n' to a newline.
(but i do feel dirty.)
- erik
next prev parent reply other threads:[~2012-10-05 14:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-05 10:23 dexen deVries
2012-10-05 11:49 ` erik quanstrom
2012-10-05 12:31 ` dexen deVries
2012-10-05 12:44 ` dexen deVries
2012-10-05 13:04 ` erik quanstrom
2012-10-05 13:08 ` dexen deVries
2012-10-05 14:25 ` erik quanstrom [this message]
2012-10-05 14:34 ` erik quanstrom
2012-10-05 14:48 ` dexen deVries
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