o.'a' = 'alt'
is NOT a valid way to set a compound variable. That syntax ends up being
an expression that evaluates to the value "0", which then gets issued as a
shell command. Run that using Trace I and you can see exactly how those
instructions are getting evaluated.
To set a compound variable using a literal string tail, you need to use the
square bracket syntax:
o.['a'] = 'alt'
Rick
On Sun, Apr 27, 2014 at 7:57 PM, J. Leslie Turriff <
jlturr...@centurylink.net> wrote:
> I'm getting a strange result when I try to initialize some stem
> variables
> whose stem names start with "o". I don't understand how the shell is
> getting
> its fingers into an ordinary rexx assignment statement?
> My system is OpenSuSE 13.1 on x86_64 hardware.
> I ran across this while trying to set various opt.X variables, so
> I tried
> changing opt. to optn.. When the problem persisted, I created a little
> testcase program. Here's what I have:
>
> | 18:42:08,leslie@pinto
> | ~/bin/rexx
> | $rexx -v
> | Open Object Rexx Version 4.2.0
> | Build date: Dec 28 2013
> | Addressing Mode: 64
> |
> | Copyright (c) IBM Corporation 1995, 2004.
> | Copyright (c) RexxLA 2005-2013.
> | All Rights Reserved.
> | This program and the accompanying materials are made available under
> | the terms of the Common Public License v1.0 which accompanies this
> | distribution or at
> | http://www.oorexx.org/license.html
> |
> | 18:42:32,leslie@pinto
> | ~/bin/rexx
> | $testcase
> | 3 *-* o. = ''
> | >>> ""
> | 4 *-* op. = ''
> | >>> ""
> | 5 *-* opt. = ''
> | >>> ""
> | 6 *-* opti. = ''
> | >>> ""
> | 7 *-* optio. = ''
> | >>> ""
> | 8 *-* option. = ''
> | >>> ""
> | 9 *-* optn. = ''
> | >>> ""
> | 10 *-* o.'a' = 'alt'
> | >>> "0"
> | sh: /home/leslie/bin/rexx/0: Permission denied
> | +++ "RC(126)"
> | 11 *-* op.'B' = 'amb'
> | >>> "0"
> | sh: /home/leslie/bin/rexx/0: Permission denied
> | +++ "RC(126)"
> | 12 *-* opt.'c' = 'cap'
> | >>> "0"
> | sh: /home/leslie/bin/rexx/0: Permission denied
> | +++ "RC(126)"
> | 13 *-* opti.'C' = 'col'
> | >>> "0"
> | sh: /home/leslie/bin/rexx/0: Permission denied
> | +++ "RC(126)"
> | 14 *-* optio.'n' = 'num'
> | >>> "0"
> | sh: /home/leslie/bin/rexx/0: Permission denied
> | +++ "RC(126)"
> | 15 *-* option.'H' = 'sha'
> | >>> "0"
> | sh: /home/leslie/bin/rexx/0: Permission denied
> | +++ "RC(126)"
> | 16 *-* optn.'s' = 'sec'
> | >>> "0"
> | sh: /home/leslie/bin/rexx/0: Permission denied
> | +++ "RC(126)"
> | 17 *-* exit
> |
> | 18:42:41,leslie@pinto
> | ~/bin/rexx
> | $cat testcase
> | #!/usr/bin/rexx
> | trace rnormal
> | o. = ''
> | op. = ''
> | opt. = ''
> | opti. = ''
> | optio. = ''
> | option. = ''
> | optn. = ''
> | o.'a' = 'alt'
> | op.'B' = 'amb'
> | opt.'c' = 'cap'
> | opti.'C' = 'col'
> | optio.'n' = 'num'
> | option.'H' = 'sha'
> | optn.'s' = 'sec'
> | exit
> | 18:42:54,leslie@pinto
> | ~/bin/rexx
>
> Can anyone explain what's happening here?
>
> Leslie
>
> btw
> There is an empty file 0 in my bin/rexx/ directory; some arcane
> subsystem on
> my machine creates one in every directory, so if I delete it it's back the
> next day; so that's where the error message gets it, but how is bash
> getting
> invoked during a Rexx assignment?
>
> | 18:45:12,leslie@pinto
> | ~/bin/rexx
> | $ls -l
> | total 1276
> | -rw-r--r-- 1 leslie users 0 2014-04-11 18:56:20 0
> | :
>
>
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