escchars.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 50 行

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//  escape codes to be used when recognized by scanner

// from ISO C 2.2.2
#define ESCAPE_a        0x07    // alert
#define ESCAPE_b        0x08    // backspace
#define ESCAPE_f        0x0C    // form feed
#define ESCAPE_n        0x0A    // new line
#define ESCAPE_r        0x0D    // carriage return
#define ESCAPE_t        0x09    // horizontal tab
#define ESCAPE_v        0x0B    // vertical tab

//  escape classifications

#define ESCAPE_NONE     0   // - no escaping
#define ESCAPE_OCTAL    1   // - escape octal found
#define ESCAPE_HEX      2   // - \x found
//                          // - otherwise, classified as \char (ESCAPE_?)