ref: 38ea1ac105f4484f02bba3bfbc790ebe4f18f016
dir: /sys/src/ape/lib/l/allprint.c/
#include <libl.h> #include <stdio.h> extern FILE* yyout; int printable(int c) { return 040 < c && c < 0177; } void allprint(char c) { switch(c) { case '\n': fprintf(yyout,"\\n"); break; case '\t': fprintf(yyout,"\\t"); break; case '\b': fprintf(yyout,"\\b"); break; case ' ': fprintf(yyout,"\\\bb"); break; default: if(!printable(c)) fprintf(yyout,"\\%-3o",c); else c = putc(c,yyout); USED(c); break; } return; }