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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: how to calculate the size of string in bytes?
Date: Tue, 18 Aug 2015 17:47:27 -0400	[thread overview]
Message-ID: <jwvk2ssqni6.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: 20150818101352.GA6744@tuxteam.de

> It seems somewhat wasteful to encode msg (to find its length) just
> to let process-send-string encode again -- perhaps there's a better
> idiom around for that.

Yup: communicate with the process using bytes rather than chars!

I.e. set the process's coding system to binary.

Then you just need to call (encode-coding-string msg coding-system) once
to get the bytes and you send them as is: they won't be re-encoded.


        Stefan




  parent reply	other threads:[~2015-08-18 21:47 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-18  9:11 how to calculate the size of string in bytes? Sam Halliday
2015-08-18 10:13 ` tomas
2015-08-18 14:37   ` Eli Zaretskii
2015-08-18 14:45     ` tomas
2015-08-18 15:00       ` Eli Zaretskii
2015-08-18 16:01         ` tomas
2015-08-18 16:35           ` Eli Zaretskii
2015-08-18 19:30             ` tomas
2015-08-18 19:49               ` Eli Zaretskii
2015-08-18 20:11                 ` tomas
2015-08-18 21:47   ` Stefan Monnier [this message]
2015-08-19  5:43     ` tomas
     [not found]   ` <mailman.8577.1439934462.904.help-gnu-emacs@gnu.org>
2015-08-19  8:57     ` Sam Halliday
2015-08-19  9:22       ` Sam Halliday
2015-08-19 19:47       ` Stefan Monnier
     [not found] ` <mailman.8504.1439892841.904.help-gnu-emacs@gnu.org>
2015-08-18 10:43   ` Sam Halliday
2015-08-18 11:47     ` tomas
     [not found]     ` <mailman.8510.1439898432.904.help-gnu-emacs@gnu.org>
2015-08-18 12:06       ` Sam Halliday
2015-08-18 14:34 ` Eli Zaretskii

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