How to merge two symbols in assembler from Code Composer Studio?

I don't think thsi is possible in assembly.

If the symbols are symbols defined with the standard C preprocessor (#define etc.), then you can concat them, stringize them etc. with the same preprocessor using '##' and similar operators.

But AFAIK these are not available in assembly.

But you can mix both (if your toolchain invokes the preprocessor for assembly files): the assmbler will get the preprocessed output as its input file, and the preprocessor does not care for any assembly syntax. It just does text substitution.

I've done it myself when writing some MSP header files (yes, it was for C, but the preprocessor doesn't know nor care for the target language)

Yes, indeed I expected something like ## operator or automatic merge two neighbour strings.
Unfortunately, regular preprocesor is not in this place in CCS compilation chain (I would rather avoid changing it).

Anyway, thank you for inspiration :)
I read again, and again all examples of macros in CCS assembler document and found that symbols may be accessed like that:

:SYMBOL:   - colons on the begining and at the end of symbol name,

so following code should concatenate symbols:

.asg     "ABC", symbol1
.asg     "123", symbol2

.asg   ":symbol1::symbol2:", result

result    ; will be substituted by ABC123

Regards,
Piotr Romaniuk
ELESOFTROM