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Iterating over all buffer lines
From: |
Sean McAfee |
Subject: |
Iterating over all buffer lines |
Date: |
Thu, 17 Jan 2013 12:55:00 -0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
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?
- Iterating over all buffer lines,
Sean McAfee <=