The function length() always reports the number of characters in the string: you do not need to know whether the UTF8 flag is set on your string to understand what it will do.

The function lc() on the other hand will give different results for the same string (ie a string consisting of the same characters) depending on whether the UTF8 flag is set or not. As such it is an example of the Unicode bug in action.

This is not necessarily wrong - it is after all documented behaviour. But it does mean that, despite the intent, the programmer needs to know how the UTF8 flag will have been set to correctly predict the behaviour of lc() on strings containing certain characters.

In reply to Re^4: Seeking Perl docs about how UTF8 flag propagates by hv
in thread Seeking Perl docs about how UTF8 flag propagates by raygun

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