UPDATE:
Calling eof on the file handle after the pipe open catches the error.
open (ARTICLE, "-|", "caesar <article");
eof ARTICLE and die "Can't start caesar:\n$!\n$^E";
Thank you BrowserUk for your help!
Good morning!
I have a question regarding ActivePerl 5.020 on Windows: How do I catch errors with a 3-arg pipe open?
Perldoc offers the following example in the open documentation under "General Examples"
open(ARTICLE, "-|", "caesar <article")
or die "Can't start caesar: $!"; # N.B. this is never reached
I would expect this to fail with the "Can't start caesar" error since I do not have a "caesar" program in $PATH, but the die portion is never reached.
Am I doing something wrong? Do things work differently when running under Windows?
Thank you for your time
edit:
Just for clarification, I am wondering why the example provided from Perldoc does not work as advertised
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, details, 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, summary, 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: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.