Re: request for review: Doing direct file I/O in Emacs Lisp

[Richard Stallman]

    I understand that rationale, but in this case Eshell has a crying need
    for being able to directly write to files.  It makes output
    redirection thousands of times faster, and also makes it possible to
    output to device files and named pipes.

Could you tell me more?  What data does eshell want to write into
files?  Where is the data coming from?  Is it coming from subprocesses
started by eshell, or is it generated from eshell itself?