Hi,
The byteidx() function returns the length of a string in bytes when
the specified character
index is equal to the number of characters in the string:
echo byteidx("abc", 3)
3
But the charidx() function returns -1 when the specified byte index is
equal to the number
of bytes in the string:
echo charidx("abc", 3)
-1
When I implemented the support for charidx() in 8.2.2233, I didn't
handle this case properly.
Should we change charidx() to return the number of characters in the
string in this case?
This will help in the LSP plugin where the language server specifies
the index after the
last character in some cases (e.g. completion). The LSP plugin
currently checks for this
case and then uses strcharlen() to get the number of characters. This
involves computing
the string length two times.
Thanks,
Yegappan
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