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Fix string-distance for two empty strings

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* fns.c (Fstring_distance): Avoid using uninitialized memory.
* test/src/fns-tests.el (test-string-distance): Add test cases.
This commit is contained in:
Philip Kaludercic
2021-09-23 18:12:41 +02:00
committed by Mattias Engdegård
parent 13d930dedd
commit c44190ca5b
2 changed files with 10 additions and 2 deletions
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10
test/src/fns-tests.el
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@@ -786,7 +786,15 @@
;; string containing hanzi character, compare by character
(should (equal 2 (string-distance "ab" "ab我她")))
(should (equal 1 (string-distance "ab" "a我b")))
(should (equal 1 (string-distance "我" "她"))))
(should (equal 1 (string-distance "我" "她")))
;; correct behaviour with empty strings
(should (equal 0 (string-distance "" "")))
(should (equal 0 (string-distance "" "" t)))
(should (equal 1 (string-distance "x" "")))
(should (equal 1 (string-distance "x" "" t)))
(should (equal 1 (string-distance "" "x")))
(should (equal 1 (string-distance "" "x" t))))
(ert-deftest test-bignum-eql ()
"Test that `eql' works for bignums."