C10: New Line in strings: when to use <13,10> and CHR(13) & CHR(10)?

questions
1

Please help a confused C10 newbie.

I noticed that MESSAGE interprets the pipe symbol “|” as a CR LF
TIP and report examples accept <13,10>

Visual Basic has a built in constant called vbCrLf which is the equivalent of Clarion’s CHR(13) & CHR(10). Does C10 have anything like that?

Does Clarion do some magic and convert <13,10> to CR LF in all strings, or am I missing something?

I have tried to RTFM but I can’t find anything to clarify the situation, and the CHR function notes don’t give an example.

2

Pipe symbol is interpreted as CLRF only by MESSAGE function, in other places you can use your own equate like
eq::CLRF EQUATE('<13,10>')

multilineString = 'Line1'& eq::CRLF &'Line2'& eq::CRLF &'Line3'

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3

Thanks Mike. I noticed that String Theory also uses <13,10> so I guess its the way to do it. Thanks for the example too.

I really appreciate the time that people take to answer my newbie questions. :smile:

4

I rarely use CHR().

CHR() can only be used in CODE, while string literals can be used in data/equate declarations AND code.

The “magic” of <13,10> is the brackets. There are other “magic” characters as well.

<13> = <0dh> = CHR(13) = CHR(0dh)

'a{4}'  = 'aaaa'
'xa{5}' = 'xaaaaa'

If you have a string such as ‘<I am cool>’, you can escape the left bracket by doubling it. ‘<<I am cool>’. The compiler is a lot better at ascertaining the intended usage than the old days. Often times you can get by without doubling up.

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5

For anyone new, this is a simple example of defining an equate in a global include file so that something like <13,10> never has to be included in ones code.

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6

Well, I extended printf function, now it replaces a pipe with CRLFsequence:
multilineString1 = printf('%s|%s|%s', 'Line 1', 'Line 2', 'Line 3')
multilineString2 = printf('Line1|Line2|Line3')

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