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vim-patch:8.2.1517: cannot easily get the character under the cursor

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Problem:    Cannot easily get the character under the cursor.
Solution:   Add the {chars} argument to strpart().
6c53fca023
This commit is contained in:
Jan Edmund Lazo
2020-08-23 18:03:41 -04:00
parent bf8d96a30d
commit 107e50b25e
4 changed files with 32 additions and 10 deletions
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2
src/nvim/eval.lua
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@@ -336,7 +336,7 @@ return {
stridx={args={2, 3}},
string={args=1},
strlen={args=1},
strpart={args={2, 3}},
strpart={args={2, 4}},
strridx={args={2, 3}},
strtrans={args=1},
strwidth={args=1},

10
src/nvim/eval/funcs.c
View File

@@ -9946,6 +9946,16 @@ static void f_strpart(typval_T *argvars, typval_T *rettv, FunPtr fptr)
len = slen - n;
}
if (argvars[2].v_type != VAR_UNKNOWN && argvars[3].v_type != VAR_UNKNOWN) {
int off;
// length in characters
for (off = n; off < (int)slen && len > 0; len--) {
off += utfc_ptr2len((char_u *)p + off);
}
len = off - n;
}
rettv->v_type = VAR_STRING;
rettv->vval.v_string = (char_u *)xmemdupz(p + n, (size_t)len);
}

4
src/nvim/testdir/test_functions.vim
View File

@@ -334,6 +334,10 @@ func Test_strpart()
call assert_equal('lép', strpart('éléphant', 2, 4))
call assert_equal('léphant', strpart('éléphant', 2))
call assert_equal('é', strpart('éléphant', 0, 1, 1))
call assert_equal('ép', strpart('éléphant', 3, 2, v:true))
call assert_equal('ó', strpart('cómposed', 1, 1, 1))
endfunc
func Test_tolower()