William Stacey [C# MVP]

In psh, you can use a space or a colon to seperate the parm name from the
value of the parm:

# Use a space or a colon
mycmd -namene -name2:$var1 -name3 $var2

So in your last example your parm name is everything upto the colon
(i.e. -hello=c and the value is everything after the colon upto the first
space. So in terms of a psh script, this is expected behavior.
If you have a Param that matches the parm name on the cmd line, that param
will be set with the value.

# parms.ps1 test script
#
param(${hello=c}) # We have the use the ${} syntax to hide the "="
'$hello=c value: ' + ${hello=c}
"Args value: $args" # everything left over not pluged into a param

Test
---------
PS C:\> .\parms.ps1 one two three
$hello=c value: one
Args value: two three

PS C:\> .\parms.ps1 two -hello=cne
$hello=c value: one
Args value: two

Note in both cmd line example the var $hello=c is set to one. The first
case is because "one" is Position 1. In the second example, the var is set
to one because it *matches the Param name of "hello=c".

--
William Stacey [C# MVP]


"Dan" <dz.open@gmail.com> wrote in message
news:1178921284.945251.87840@u30g2000hsc.googlegroups.com...
|I discovered that when I execute a program from the PS command line
| and I try to pass an argument that starts with a hyphen (-) and
| contains a colon (, the argument will be split into 2 arguments at
| the colon.
|
| To demonstrate, I wrote a simple python script then merely echoes out
| all the arguments in argv:
|
| PS C:\3rdParty> .\testPSArgs.py c:\goodbye
| arg: C:\3rdParty\testPSArgs.py
| arg: c:\goodbye
| PS C:\3rdParty> .\testPSArgs.py =c:\goodbye
| arg: C:\3rdParty\testPSArgs.py
| arg: =c:\goodbye
| PS C:\3rdParty> .\testPSArgs.py hello=c:\goodbye
| arg: C:\3rdParty\testPSArgs.py
| arg: hello=c:\goodbye
| PS C:\3rdParty> .\testPSArgs.py -hello=c:\goodbye
| arg: C:\3rdParty\testPSArgs.py
| arg: -hello=c:
| arg: \goodbye
|
| Now, of course, the workaround is fairly simple, merely enclose the
| argument in quotes:
| PS C:\3rdParty> .\testPSArgs.py "-hello=c:\goodbye"
| arg: C:\3rdParty\testPSArgs.py
| arg: -hello=c:\goodbye
|
| I was just wondering, why does it parse the command line in this way?
|
| thanks,
| Dan
|