From: Sean McAfee <eefacm@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Iterating over all buffer lines
Date: Thu, 17 Jan 2013 12:55:00 -0800 [thread overview]
Message-ID: <bp8a9s7lecb.fsf@usca1uw-JZWWPM1.sanmateo.corp.akamai.com> (raw)
I have some code where I want to loop over all of the lines of text in a
buffer. I had a prior solution that involved repeatedly searching for
the regexp "^.+$", but that seemed a little heavyweight. Also, it only
found non-empty lines, and changing the "+" to a "*" to return all lines
causes an infinite loop.
I just tried my hand at writing a general iterate-all-lines construct,
and came up with this:
(loop for last-point = (point)
while (= 0 (forward-line))
for line = (buffer-substring-no-properties
last-point
(- (point) (if (bolp) 1 0)))
;; do something with line
)
Newlines are not returned, and as can be seen, I have to take care to
handle a final line that is missing a terminating newline.
Is there a better and/or more idiomatic way to go about it?
next reply other threads:[~2013-01-17 20:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-17 20:55 Sean McAfee [this message]
2013-01-18 2:15 ` Iterating over all buffer lines Le Wang
2013-01-18 2:43 ` Eric Abrahamsen
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