Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Except of course where the embedded null is a legitimate part of a multi-byte character--which means a full unicode verification of every string passed to every system API

Um, sorry, but if you're talking about the perl-internal representation of unicode, which is utf-8, the only thing that involves a null byte is the unicode code-point U+0000 (i.e. "NULL") -- and this, BTW, is simply the single-byte-null itself in utf-8. For every other utf-8 character, every byte is always non-null. And I don't know of any pre-unicode encodings that use nulls as parts of multi-byte characters.

If a string of octets is supposed to represent utf-16, then sure, we would expect some of those octets to be null -- each octet is supposed to be treated as half of a 16-bit binary "word"; but this is a very different situation. Here we are talking about something more akin to plain old raw binary data, not a string of characters that can be transmuted directly to a char* and treated as a string in C.

In reply to Re^3: How is perl able to handle the null byte? by graff
in thread How is perl able to handle the null byte? by muba

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others musing on the Monastery: (2)
As of 2022-07-05 22:37 GMT
Find Nodes?
    Voting Booth?

    No recent polls found