* Tom Conlin <[EMAIL PROTECTED]> [060420 14:09]:
>
> Hi Tim,
> I duplicated your examples on RH Linux & solaris
> I think it should be ramboed
Ramboed it is....
tj
> Tim Johnson wrote:
> > I'm picking up this topic again:
> > there are features to 'call on linux that are downright baffling, and if
> > I were to use it in an application, rather strange to me.
> > Let's look at some examples:
> >
> >>> res: call "ls *.r"
> > user.r ;; okay
> > == 0 ;; exit code of 0 is correct
> > ;; now let's introduce a legitimate call that has unsuccessful results
> > res: call "ls *.cpp"
> > ls: *.cpp: No such file or directory
> > == 0 ;; hmmm! now let's do the same from the shell.
> > [EMAIL PROTECTED] tim]$ ls *.cpp
> > ls: *.cpp: No such file or directory
> > [EMAIL PROTECTED] tim]$ echo $?
> > 1
> > ;; NOTE the differences in the exit code.
> >
> > Now let's 'buffer' the output
> >>> buffer: copy ""
> > == ""
> > res: call/output "ls *.r" buffer
> > == 214 ;; say what?
> >>> buffer
> > == "user.r^/" ;; good
> >
> > ;; now the following is definitely unsettling, because it disables the
> > ;; programmer's ability to gracefully handle errors:
> >>> clear buffer
> > == ""
> >>> res: call/output "ls *.cpp" buffer
> > ;; Hoy moly, prints to stdout
> > ls: *.cpp: No such file or directory
> > == 214 ;; again exit code is inconsistant with shell command
> >>> buffer
> > == "" ;; and nothing in the buffer
> > ;; Trying another refinement
> > res: call/error "ls *.cpp" buffer
> > == 214
> >>> buffer
> > == "ls: *.cpp: No such file or directory^/"
> > ;; now that's a bit better, at least we've captured the error message.
> >
> > ;; but I'm still baffled about the anomalies in the exit codes.
> > ;; BTW: using the /info refinement returns the same exit code as
> > ;; an attribute
> >
> > Just curious. Does anyone think that this should be treated as a bug?
> > Otherwise, I could wrap this in a function that could handle some of
> > these inconsistancies.
> >
> > tim
> >
>
> --
> ... nice weather eh [EMAIL PROTECTED]
>
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--
Tim Johnson <[EMAIL PROTECTED]>
http://www.alaska-internet-solutions.com
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