Problems with {034} inside strings in Print statements

mattcro · Joined: 03 Oct 2007 Posts: 327 Location: Scotland

I'm trying to use the {034} trick in string constants to insert quotation marks in AT commands, but the strings are not correctly compiled. For example:

MAK3 · Joined: 24 Sep 2010 Posts: 449 Location: Germany

Hi mattcro,

to get this:

bzijlstra · "10/02/15,08:02:00"

This is also a nice solution...

MWS · Joined: 22 Aug 2009 Posts: 2262

mattcro · Joined: 03 Oct 2007 Posts: 327 Location: Scotland

It looks like the parser/compiler gets confused, and treats some of the {034} as delimiter quote marks instead of part of the literal string. Some more tests:

MWS · Joined: 22 Aug 2009 Posts: 2262

Just wondering why you get stuck to an undocumented trick, while there's a dedicated function especially for the right use ?
And, if you'd insist it must work, not everything has to Smile

Evert :-) · Joined: 18 Feb 2005 Posts: 2156

It's not an undocumented trick, it's described in the help file under Language Fundamentals.

To insert special characters into the string :
s= "AB{027}cd"
The {ascii} will insert the ASCII value into the string.

It doesn't work at described, so it looks like a bug.

athomeelectronics · Joined: 13 Jun 2007 Posts: 60

Similar thread:

http://www.mcselec.com/index2.php?option=com_forum&Itemid=59&page=viewtopic&t=9334&highlight=

albertsm · Joined: 09 Apr 2004 Posts: 5921 Location: Holland

when you use print, you can best use ;
print "something" ; somevar ; "etc"

the problem with multiple quotes is that it is hard to know what is part of the strings and what isnt.
print "s"""; """ ' is ; part of the string or not?
As it worked, it checks if there are surrounding quotes.
The {034} solution is nice, but it was converted too early to " internal , leading to problems.
I rewrote it, and i checked with print, assigning, const, etc.
It seems to work fine now but from experience i know there is always some construction that makes it fail.
so i will make a beta available for customers that can only be downloaded with the wiz.
i will add a news item when it is available.

mattcro · Joined: 03 Oct 2007 Posts: 327 Location: Scotland

Ok Mark. I was going to write a support email but it looks like you are already working on this. Smile

Yes, it looks like the {xxx} gets converted to the corresponding byte value too early in the compile process, and then it is impossible to tell what is string delimiter and what is part of the string.

I wanted to have {034} in the strings to reduce the code size and execution time. It makes sense to have as few string concatenation operation in code execution as possible, when they can be stored as complete string constants.

When I was testing the {034} issues I tried with Print "this; myvar; "that" as well as Print "this" + myvar + "that" but I did not notice any difference. I guess the semicolon is the correct way to do it in a print statement though, since they are separate variables/constants.

albertsm · Joined: 09 Apr 2004 Posts: 5921 Location: Holland

maybe you can write a test sample that uses print, const , if and assign using {034} and send it to support. i had to make some tricky changes and do not like to break existing {} code.