Quotation mark in argument

[Brandon Grudt]

All,

I have a global tcl script that checks a subfield and if the content of that message is in the list of arguments called OLDVALS, it will translate to the corresponding list of arguments called NEWVALS.  The argument looks like this:

{SEGNAME GT1} {FIELDNUM 3} {SUBFIELDNUM 0} {OLDVALS {OLD1 OLD2 OLD3}} {NEWVALS {NEW1 NEW2 NEW3}}

This works exactly how I need it.  The problem I have run into, is that I am trying to apply this script to an old value of “”.  I need to turn it to ND.  When I try this, I get a tcl error saying there is an unmatched open quote in list:

{SEGNAME GT1} {FIELDNUM 3} {SUBFIELDNUM 0} {OLDVALS {“”}} {NEWVALS {ND}}

When I try to escape it, it will simply not perform the translation:

{SEGNAME GT1} {FIELDNUM 3} {SUBFIELDNUM 0} {OLDVALS {“”}} {NEWVALS {ND}}

I’m relatively green, so hopefully there is something obvious I am omitting.  I can write a script to do this, but I make every attempt to not write a new tcl script if I do not have to do it.

Topic

[Jim Kosloskey]

Have you tried escaping the escape (\”)?

email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.

[Charlie Bursell]

I tried it and it seems you double quote get converted to a single quote.  An issue that should be reported to Support as an “undocumented enhancement” or bug  😀

However, as Jim stated if you double quote it like:

{OLDVALS {“”}

It should work for you.

This is a reason I am vey much against procs that receive multiple arguments to do multiple tasks.  In Tcl it is so easy and *MUCH* more maintainable to write a proc for a single task.

[David Coffey]

The double quotes indicate no argument?  a null value?  

Use a code to indicate the “” and convert the indicator code to the double quotes inside the proc.

[Author]

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