in reply to Re^4: Detect line endings with CGI.pm upload
in thread Detect line endings with CGI.pm upload

On Windows \n is CRLF, not LF, even in C. This can cause problems when reading and writing files that shold be binary but are written as text and vice versa.

Update: as ikegami correctly points out, I was conflating the disk version with the in memory version of these strings. \n should always be the line feed (in memory) and the I/O subsystem should have converted it.

G. Wade

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Re^6: Detect line endings with CGI.pm upload
by ikegami (Patriarch) on Dec 29, 2008 at 00:39 UTC

    Not true. 

    >perl -le"print length qq{\n}"
1

>perl -le"print unpack 'H*', qq{\n}"
0a

    [download]
    Read more... It's not true in C either. (735 Bytes)

    In Perl, LF gets converted to CRLF on input/output when the crlf PerlIO layer is used. While the string is in memory, you want to work with just LF, and \n is just LF.

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