Preprocessor replaces patterns in string constants

[fachat]

If you have a string constant like

.asc "COPYCON^@DUP^@CD^@DEVCMD^@COPY^@"
This breaks if there is a pre-processor define like
#define DUP 123
As a mitigation you have to split the string constant like so
.asc "COPYCON^@D","UP^@CD^@DEVCMD^@COPY^@"

[fachat]

Little test program:
`
#define DUP 123

    .asc "DUP^@"

    .asc '0DUP^@'

    .asc "D","UP^@"

    .asc "DUP

    .asc "DU0

    .asc "DU

`