A Perl 6 port of this module.
wcwidth
takes a single codepoint and outputs its width:
wcwidth(0x3042) # "あ" - returns 2
Returns:
-1
for a control character0
for a character that does not advance the cursor (NULL or combining)1
for most characters2
for full width characters
wcswidth
takes a string and outputs its total width:
wcswidth("*ウルヰ*") # returns 8 = 2 + 6
Returns -1 if any control characters are found.
Unlike the Python version, this module does not support getting the width of
only the first n
characters of a string, as you can use the substr
method.
Thanks to Jeff Quast (jquast), the author of the Python module, which in turn is based on the C library by Markus Kuhn.