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vim-patch:8.0.1410: hang when using count() with an empty string

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Problem:    Hang when using count() with an empty string.
Solution:   Return zero for an empty string. (Dominique Pelle, closes vim/vim#2465)
338e47fdfd
This commit is contained in:
Jan Edmund Lazo 2018-08-08 23:16:36 -04:00
parent fe6cf2812b
commit a445887985
3 changed files with 4 additions and 3 deletions
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4
runtime/doc/eval.txt
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@ -2998,8 +2998,8 @@ count({comp}, {expr} [, {ic} [, {start}]]) *count()*
When {ic} is given and it's |TRUE| then case is ignored. When {ic} is given and it's |TRUE| then case is ignored.
When {comp} is a string then the number of not overlapping When {comp} is a string then the number of not overlapping
occurences of {expr} is returned. occurrences of {expr} is returned. Zero is returned when
{expr} is an empty string.
*cscope_connection()* *cscope_connection()*
cscope_connection([{num} , {dbpath} [, {prepend}]]) cscope_connection([{num} , {dbpath} [, {prepend}]])

2
src/nvim/eval.c
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@ -7603,7 +7603,7 @@ static void f_count(typval_T *argvars, typval_T *rettv, FunPtr fptr)
const char_u *expr = (char_u *)tv_get_string_chk(&argvars[1]); const char_u *expr = (char_u *)tv_get_string_chk(&argvars[1]);
const char_u *p = argvars[0].vval.v_string; const char_u *p = argvars[0].vval.v_string;
if (!error && expr != NULL && p != NULL) { if (!error && expr != NULL && *expr != NUL && p != NULL) {
if (ic) { if (ic) {
const size_t len = STRLEN(expr); const size_t len = STRLEN(expr);

1
src/nvim/testdir/test_functions.vim
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@ -723,6 +723,7 @@ func Test_count()
call assert_equal(0, count("foo", "O")) call assert_equal(0, count("foo", "O"))
call assert_equal(2, count("foo", "O", 1)) call assert_equal(2, count("foo", "O", 1))
call assert_equal(2, count("fooooo", "oo")) call assert_equal(2, count("fooooo", "oo"))
call assert_equal(0, count("foo", ""))
endfunc endfunc
func Test_changenr() func Test_changenr()