Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

It may not exactly be that cmd.exe is being called. What you are more likely seeing is a side effect of the way programs need to pass arguments to MS-Win programs. A similar issue (parameter list mangling) was seen recently when someone ran into problems passing parameters from Java to Perl with a system call. He too was passing a list.

The issue is this: MS-Windows programs don't actually get lists when they are called by Ms-Win. They expect to get a single string (lpCmdLine). Programs usually have some internal code that converts that string back into an array. In order to play nicely with that code, Java (and I now suspect Perl) takes your list and concatenates it into a string before passing it. The program (in this case Perl) then splits it back into arguments and viola.

For some in depth discussion about why there just aren't any good choices in this matter, see You might also want to look at these two posts on the Java/Perl thread: Re^9: Running perl from java and Re^8: Running perl from java or the thread as a whole.

In reply to Re^3: exec always invokes the shell? win32 by ELISHEVA
in thread exec always invokes the shell? win32 by Anonymous Monk

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

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others exploiting the Monastery: (10)
    As of 2018-05-21 13:24 GMT
    Find Nodes?
      Voting Booth?