Lines Matching defs:expression
800 * apply expression with optional head and tail queries to files in argv
804 dssrun(Dss_t* dss, const char* expression, const char* head, const char* tail, char** argv)
814 if (!expression || !*expression || *expression == '-' && !*(expression + 1))
815 expression = tail ? tail : "{write}";
816 if (!(expr = dsscomp(dss, expression, NiL)))
820 if (expression == tail)
852 (*dss->disc->errorf)(dss, dss->disc, 2, "%s: expression already has %s head", head, x->query->name);