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Re: How to check whether a character (or one-character string) is a lett
From: |
Thorsten Jolitz |
Subject: |
Re: How to check whether a character (or one-character string) is a letter? |
Date: |
Sat, 04 Oct 2014 03:38:46 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Marcin Borkowski <mbork@wmi.amu.edu.pl> writes:
Hello,
> this is a problem I have.
>
> 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?
>
> The reason I'm asking is that I'm writing a function which converts an
> arbitrary string to a valid (and nice) filename (e.g., only letters and
> hyphens) - so basically I want to walk a string character by character
> and convert any space to a hyphen and omit any other non-letter. Am I
> reinventing the wheel?
there is something similar in PicoLisp:
#+BEGIN_SRC picolisp :results pp
(fold "abc-?/@ä-12 YZ #+ü")
#+END_SRC
#+results:
: "abcä12yzü"
but not quite ...
--
cheers,
Thorsten