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Add absolute optional parameter to line-number-at-pos (Bug#26417)

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* lisp/simple.el (line-number-at-pos): Add a second optional
  argument 'absolute'.
* test/list/simple-tests.el: Add tests for 'line-number-at-pos'.
This commit is contained in:
Damien Cassou 2017-04-09 12:46:57 +02:00 • committed by Nicolas Petton
parent 2d846eece7
commit a7754a250b
4 changed files with 82 additions and 14 deletions
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49
test/lisp/simple-tests.el
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@ -448,5 +448,54 @@ See Bug#21722."
(call-interactively #'eval-expression)
(should (equal (current-message) "66 (#o102, #x42, ?B)"))))))
(ert-deftest line-number-at-pos-in-widen-buffer ()
(let ((target-line 3))
(with-temp-buffer
(insert "a\nb\nc\nd\n")
(goto-char (point-min))
(forward-line (1- target-line))
(should (equal (line-number-at-pos) target-line))
(should (equal (line-number-at-pos nil t) target-line)))))
(ert-deftest line-number-at-pos-in-narrow-buffer ()
(let ((target-line 3))
(with-temp-buffer
(insert "a\nb\nc\nd\n")
(goto-char (point-min))
(forward-line (1- target-line))
(narrow-to-region (line-beginning-position) (line-end-position))
(should (equal (line-number-at-pos) 1))
(should (equal (line-number-at-pos nil t) target-line)))))
(ert-deftest line-number-at-pos-keeps-restriction ()
(with-temp-buffer
(insert "a\nb\nc\nd\n")
(goto-char (point-min))
(forward-line 2)
(narrow-to-region (line-beginning-position) (line-end-position))
(should (equal (line-number-at-pos) 1))
(line-number-at-pos nil t)
(should (equal (line-number-at-pos) 1))))
(ert-deftest line-number-at-pos-keeps-point ()
(let (pos)
(with-temp-buffer
(insert "a\nb\nc\nd\n")
(goto-char (point-min))
(forward-line 2)
(setq pos (point))
(line-number-at-pos)
(line-number-at-pos nil t)
(should (equal pos (point))))))
(ert-deftest line-number-at-pos-when-passing-point ()
(let (pos)
(with-temp-buffer
(insert "a\nb\nc\nd\n")
(should (equal (line-number-at-pos 1) 1))
(should (equal (line-number-at-pos 3) 2))
(should (equal (line-number-at-pos 5) 3))
(should (equal (line-number-at-pos 7) 4)))))
(provide 'simple-test)
;;; simple-test.el ends here