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Reading file in emacs

From: Qiang Guo
Subject: Reading file in emacs
Date: Tue, 22 Jun 2010 22:05:18 -0600
User-agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (Goj┼Ź) APEL/10.7 Emacs/23.2 (x86_64-apple-darwin10.3.0) MULE/6.0 (HANACHIRUSATO)


I'm wondering if there is a way to read the content of files, say, to a
variable rather than a buffer ? Of course, one way to do
this is first read file into buffer and then edit the
buffer. Here comes my second question, how to process file
in a byte-by-byte fashion, for instance, instead of editing
a line of text, I'd like to edit directly their binary
representations ?

I know this is best done by C/C++, or some other
languages. However, I just wonder the possibility of doing
this in emacs, the greatest editor ever :-)



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