* module/language/c99/compiler.mes (initzer->value): New function. (initzer->data): Use it to support bitwise-or initializer. * scaffold/tests/74-multi-line-string.c (test): Test it.
* module/language/c99/compiler.mes (expr->accu): Handle comma operator. * scaffold/tests/74-multi-line-string.c (test): Test it.
* module/language/c99/compiler.mes (initzer->data, expr->global): Handle multi-line strings. * scaffold/tests/74-multi-line-string.c: New file. * make.scm (add-scaffold-test): Build it.