So in my endless quest for syntactic sugar, I discovered the standard
Shell.pm module. This will make my random glue much more readable, thought
I. So I tried it out, and it was good; even better when combined with
autoquoting arrows (not demonstrated here for clarity). Trouble is, try as
I might, I was unable to pass arguments with spaces to the spawned process:
they were always seen as two separate arguments, no matter how much I
escaped them.
use Shell qw(oggenc);
# ("bar.wav" doesn't exist, so errors of the form "cannot open input f
+ile
# 'bar.wav' indicate the command is being parsed correctly. "Multiple
+ input
# files" type errors indicate that the spaced argument is being seen a
+s two.)
# All the system() calls work...
# ERROR: Cannot open input file "bar.wav": No such file or directory
system("oggenc -o foo.ogg -c " . quotemeta("composer=J. Random Hacker"
+) . " bar.wav");
# ERROR: Cannot open input file "bar.wav": No such file or directory
system("oggenc", "-o", "foo.ogg", "-c", "composer=J. Random Hacker", "
+bar.wav");
# None of the Shell.pm ones do.
# ERROR: Multiple input files with specified output filename: suggest
+using -n
oggenc("-o", "foo.ogg", "-c", "composer=J. Random Hacker", "bar.wav");
# ERROR: Multiple input files with specified output filename: suggest
+using -n
oggenc("-o", "foo.ogg", "-c", quotemeta("composer=J. Random Hacker"),
+"bar.wav");
# ERROR: Multiple input files with specified output filename: suggest
+using -n
oggenc("-o foo.ogg -c " . quotemeta("composer=J. Random Hacker") . " b
+ar.wav");
Does anyone know how I can pass an argument with whitespace in it? If
not, why, and is this to be construed as a bug or a feature? Thanks in
advance. (Looking back, I have no idea why the first part of this node is
written in the past tense. Nevermind.)
--
amoe