From: Eli Zaretskii <eliz@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: How to check whether a character (or one-character string) is a letter?
Date: Sat, 04 Oct 2014 10:29:38 +0300 [thread overview]
Message-ID: <83r3yogun1.fsf@gnu.org> (raw)
In-Reply-To: <87iok0y8wr.fsf@wmi.amu.edu.pl>
> From: Marcin Borkowski <mbork@wmi.amu.edu.pl>
> Date: Sat, 04 Oct 2014 02:29:24 +0200
>
> Assume that I have a character (taken from some string, which in turn is
> copied from the buffer - so it need not be ASCII). What is the best way
> to check whether it is a letter within ASCII range?
One way is this:
(= 1 (string-bytes (char-to-string ch)))
where 'ch' is the character you want to test. Note that this will
pass any 7-bit ASCII character, including control characters, digits,
and punctuation, not just "letters".
prev parent reply other threads:[~2014-10-04 7:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-04 0:29 How to check whether a character (or one-character string) is a letter? Marcin Borkowski
2014-10-04 1:38 ` Thorsten Jolitz
[not found] ` <CAOj2CQQsnNxtUPzPV8Vw_DgfGFXUUkZExHbArAu_zDjQn-prvw@mail.gmail.com>
2014-10-04 2:47 ` Fwd: " John Mastro
2014-10-05 0:11 ` Marcin Borkowski
2014-10-04 2:58 ` Eric Abrahamsen
2014-10-04 4:08 ` Yuri Khan
2014-10-05 0:08 ` Marcin Borkowski
2014-10-04 7:29 ` Eli Zaretskii [this message]
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