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How remove lines which are not equal in two buffers?
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
Announcing the arrival of Valued Associate #679: Cesar Manara
Unicorn Meta Zoo #1: Why another podcast?How to insert text after point?Green lines are invisible in diff output for some files in *shell*How to implement remove-key to completely undo the effect of define-keyScheme-like lambda expressions?Can I edit several files synchronously?How remove whitespaces in the beginning of lines?How show (filter) only text lines with all uppercase chars?How to swap strings in all lines?How keep only duplicate lines?How do I delete all blank lines in a buffer?
Consider the following buffers
buffer_1:
11111111
22222222
33333333
44444444
buffer_2:
55555555
66666666
22222222
44444444
I need to remove all lines which are not equal in buffer_1 and buffer_2.
The resulting buffer_3 must only contain equal lines, i.e.
buffer_3 must be like this
22222222
44444444
The lines which where NOT EQUAL and are removed from buffer_2 are
55555555
66666666
Is it possible in Emacs?
elisp text-editing text
edited yesterday
Lorem Ipsum
1,460515
asked 2 days ago
AlexeiAlexei
783212
add a comment |
Consider the following buffers
buffer_1:
11111111
22222222
33333333
44444444
buffer_2:
55555555
66666666
22222222
44444444
I need to remove all lines which are not equal in buffer_1 and buffer_2.
The resulting buffer_3 must only contain equal lines, i.e.
buffer_3 must be like this
22222222
44444444
The lines which where NOT EQUAL and are removed from buffer_2 are
55555555
66666666
Is it possible in Emacs?
elisp text-editing text
edited yesterday
Lorem Ipsum
1,460515
asked 2 days ago
AlexeiAlexei
783212
2
comm -12 <(sort file1) <(sort file2)should work too (see this SO question: stackoverflow.com/q/2696055).
– D. Ben Knoble
2 days ago
@D.BenKnoble not work for me
– Alexei
yesterday
add a comment |
Consider the following buffers
buffer_1:
11111111
22222222
33333333
44444444
buffer_2:
55555555
66666666
22222222
44444444
I need to remove all lines which are not equal in buffer_1 and buffer_2.
The resulting buffer_3 must only contain equal lines, i.e.
buffer_3 must be like this
22222222
44444444
The lines which where NOT EQUAL and are removed from buffer_2 are
55555555
66666666
Is it possible in Emacs?
elisp text-editing text
edited yesterday
Lorem Ipsum
1,460515
asked 2 days ago
AlexeiAlexei
783212
Consider the following buffers
buffer_1:
11111111
22222222
33333333
44444444
buffer_2:
55555555
66666666
22222222
44444444
I need to remove all lines which are not equal in buffer_1 and buffer_2.
The resulting buffer_3 must only contain equal lines, i.e.
buffer_3 must be like this
22222222
44444444
The lines which where NOT EQUAL and are removed from buffer_2 are
55555555
66666666
Is it possible in Emacs?
elisp text-editing text
elisp text-editing text
edited yesterday
Lorem Ipsum
1,460515
asked 2 days ago
AlexeiAlexei
783212
edited yesterday
Lorem Ipsum
1,460515
asked 2 days ago
AlexeiAlexei
783212
edited yesterday
Lorem Ipsum
1,460515
edited yesterday
Lorem Ipsum
1,460515
edited yesterday
Lorem Ipsum
1,460515
1,460515
asked 2 days ago
AlexeiAlexei
783212
asked 2 days ago
AlexeiAlexei
783212
asked 2 days ago
AlexeiAlexei
783212
783212
2
comm -12 <(sort file1) <(sort file2)should work too (see this SO question: stackoverflow.com/q/2696055).
– D. Ben Knoble
2 days ago
@D.BenKnoble not work for me
– Alexei
yesterday
add a comment |
2
comm -12 <(sort file1) <(sort file2)should work too (see this SO question: stackoverflow.com/q/2696055).
– D. Ben Knoble
2 days ago
@D.BenKnoble not work for me
– Alexei
yesterday
2
2
comm -12 <(sort file1) <(sort file2) should work too (see this SO question: stackoverflow.com/q/2696055).– D. Ben Knoble
2 days ago
comm -12 <(sort file1) <(sort file2) should work too (see this SO question: stackoverflow.com/q/2696055).– D. Ben Knoble
2 days ago
@D.BenKnoble not work for me
– Alexei
yesterday
@D.BenKnoble not work for me
– Alexei
yesterday
add a comment |
1 Answer
1
active
oldest
votes
In the following I assume that the order of the lines in the result buffer is irrelevant.
For medium size buffers you can use cl-intersection:
(defun txt-intersection (buffer-a buffer-b)
"Only keep the set theoretic intersection of lines in BUFFER-A and BUFFER-B."
(interactive "bBuffer A: nbBuffer B: ")
(with-current-buffer (generate-new-buffer (concat (buffer-name (get-buffer buffer-a))
"∩"
(buffer-name (get-buffer buffer-b))))
(insert
(mapconcat #'identity
(cl-intersection
(split-string
(with-current-buffer buffer-a (buffer-string))
"n")
(split-string
(with-current-buffer buffer-b (buffer-string))
"n")
:test #'string-equal)
"n"))
(display-buffer (current-buffer))))
The second case is the analogous with intersection substituted by set-difference.
answered 2 days ago
TobiasTobias
15.3k11035
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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active
oldest
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active
oldest
votes
In the following I assume that the order of the lines in the result buffer is irrelevant.
For medium size buffers you can use cl-intersection:
(defun txt-intersection (buffer-a buffer-b)
"Only keep the set theoretic intersection of lines in BUFFER-A and BUFFER-B."
(interactive "bBuffer A: nbBuffer B: ")
(with-current-buffer (generate-new-buffer (concat (buffer-name (get-buffer buffer-a))
"∩"
(buffer-name (get-buffer buffer-b))))
(insert
(mapconcat #'identity
(cl-intersection
(split-string
(with-current-buffer buffer-a (buffer-string))
"n")
(split-string
(with-current-buffer buffer-b (buffer-string))
"n")
:test #'string-equal)
"n"))
(display-buffer (current-buffer))))
The second case is the analogous with intersection substituted by set-difference.
answered 2 days ago
TobiasTobias
15.3k11035
add a comment |
In the following I assume that the order of the lines in the result buffer is irrelevant.
For medium size buffers you can use cl-intersection:
(defun txt-intersection (buffer-a buffer-b)
"Only keep the set theoretic intersection of lines in BUFFER-A and BUFFER-B."
(interactive "bBuffer A: nbBuffer B: ")
(with-current-buffer (generate-new-buffer (concat (buffer-name (get-buffer buffer-a))
"∩"
(buffer-name (get-buffer buffer-b))))
(insert
(mapconcat #'identity
(cl-intersection
(split-string
(with-current-buffer buffer-a (buffer-string))
"n")
(split-string
(with-current-buffer buffer-b (buffer-string))
"n")
:test #'string-equal)
"n"))
(display-buffer (current-buffer))))
The second case is the analogous with intersection substituted by set-difference.
answered 2 days ago
TobiasTobias
15.3k11035
add a comment |
In the following I assume that the order of the lines in the result buffer is irrelevant.
For medium size buffers you can use cl-intersection:
(defun txt-intersection (buffer-a buffer-b)
"Only keep the set theoretic intersection of lines in BUFFER-A and BUFFER-B."
(interactive "bBuffer A: nbBuffer B: ")
(with-current-buffer (generate-new-buffer (concat (buffer-name (get-buffer buffer-a))
"∩"
(buffer-name (get-buffer buffer-b))))
(insert
(mapconcat #'identity
(cl-intersection
(split-string
(with-current-buffer buffer-a (buffer-string))
"n")
(split-string
(with-current-buffer buffer-b (buffer-string))
"n")
:test #'string-equal)
"n"))
(display-buffer (current-buffer))))
The second case is the analogous with intersection substituted by set-difference.
answered 2 days ago
TobiasTobias
15.3k11035
In the following I assume that the order of the lines in the result buffer is irrelevant.
For medium size buffers you can use cl-intersection:
(defun txt-intersection (buffer-a buffer-b)
"Only keep the set theoretic intersection of lines in BUFFER-A and BUFFER-B."
(interactive "bBuffer A: nbBuffer B: ")
(with-current-buffer (generate-new-buffer (concat (buffer-name (get-buffer buffer-a))
"∩"
(buffer-name (get-buffer buffer-b))))
(insert
(mapconcat #'identity
(cl-intersection
(split-string
(with-current-buffer buffer-a (buffer-string))
"n")
(split-string
(with-current-buffer buffer-b (buffer-string))
"n")
:test #'string-equal)
"n"))
(display-buffer (current-buffer))))
The second case is the analogous with intersection substituted by set-difference.
answered 2 days ago
TobiasTobias
15.3k11035
answered 2 days ago
TobiasTobias
15.3k11035
answered 2 days ago
TobiasTobias
15.3k11035
answered 2 days ago
TobiasTobias
15.3k11035
15.3k11035
add a comment |
add a comment |
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2
comm -12 <(sort file1) <(sort file2)should work too (see this SO question: stackoverflow.com/q/2696055).– D. Ben Knoble
2 days ago
@D.BenKnoble not work for me
– Alexei
yesterday