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[Good news] here docs portability!

by blazar (Canon)
on Jun 16, 2007 at 12:56 UTC ( #621580=perlmeditation: print w/replies, xml ) Need Help??

From the reply to a post of mine in a clpmisc thread (link @ GG), both to the author's (Peter J. Holzer) and my own surprise:

>>If you don't convert the *script* (as opposed to print statements wi +thin >>the script), apache probably can't even start the script because the >>linux kernel will try to invoke "/usr/bin/perl\r" which doesn't exis +t. > > BTW: I've always wondered... how 'bout HERE docs? Are they portable > across platforms or is the line ending deemed to be that of the > script. To my surprise they are portable at least between Unix and Windows. Pe +rl seems to automatically detect the line endings and convert them to \x{0A} at compile time. A string written as a here document always contains simple "\n" characters as line endings regardless of whether the source file contained CRLFs or LF and whether it's executed on Windows or Unix.

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Re: [Good news] here docs portability!
by Anonymous Monk on Jun 17, 2007 at 02:19 UTC
    this is not news
      Well, it was obviously news to blazar, and it's pretty certain to be news to a good many others too.

      And sudo ln -s /usr/bin/perl /usr/bin/perl`echo -e '\r'`

        Better make that /bin/echo...

        What was I thinking, qx// is executed with /bin/sh regardless of user's favorite shell.

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