vim-55/src/regexp.c

236  * Magic characters have a special meaning, they don't match literally.
237  * Magic characters are negative.  This separates them from literal characters
238  * (possibly multi-byte).  Only ASCII characters can be Magic.
240 #define Magic(x)	((int)(x) - 256)
262     return Magic(x);
356     if (c == Magic('@') || c == Magic('=') || c == Magic('?'))
358     if (c == Magic('*') || c == Magic('+') || c == Magic('{'))
409  * Translate '\x' to its control character, except "\n", which is Magic.
1272     while (peekchr() == Magic('|'))
1298     if (paren != REG_NOPAREN && getchr() != Magic(')'))
1312 	if (curchr == Magic(')'))
1357 	if (peekchr() != Magic('&'))
1391 	    case Magic('|'):
1392 	    case Magic('&'):
1393 	    case Magic(')'):
1396 	    case Magic('Z'):
1402 	    case Magic('c'):
1406 	    case Magic('C'):
1410 	    case Magic('v'):
1415 	    case Magic('m'):
1420 	    case Magic('M'):
1425 	    case Magic('V'):
1486 	case Magic('*'):
1500 	case Magic('+'):
1515 	case Magic('@'):
1544 	case Magic('?'):
1545 	case Magic('='):
1554 	case Magic('{'):
1580 	if (peekchr() == Magic('*'))
1627       case Magic('^'):
1631       case Magic('$'):
1638       case Magic('<'):
1642       case Magic('>'):
1646       case Magic('_'):
1675       case Magic('.'):
1676       case Magic('i'):
1677       case Magic('I'):
1678       case Magic('k'):
1679       case Magic('K'):
1680       case Magic('f'):
1681       case Magic('F'):
1682       case Magic('p'):
1683       case Magic('P'):
1684       case Magic('s'):
1685       case Magic('S'):
1686       case Magic('d'):
1687       case Magic('D'):
1688       case Magic('x'):
1689       case Magic('X'):
1690       case Magic('o'):
1691       case Magic('O'):
1692       case Magic('w'):
1693       case Magic('W'):
1694       case Magic('h'):
1695       case Magic('H'):
1696       case Magic('a'):
1697       case Magic('A'):
1698       case Magic('l'):
1699       case Magic('L'):
1700       case Magic('u'):
1701       case Magic('U'):
1708 	if (enc_utf8 && c == Magic('.') && utf_iscomposing(peekchr()))
1718       case Magic('n'):
1735       case Magic('('):
1745       case Magic('|'):
1746       case Magic('&'):
1747       case Magic(')'):
1753       case Magic('='):
1754       case Magic('?'):
1755       case Magic('+'):
1756       case Magic('@'):
1757       case Magic('{'):
1758       case Magic('*'):
1766       case Magic('~'):		/* previous substitute pattern */
1787       case Magic('1'):
1788       case Magic('2'):
1789       case Magic('3'):
1790       case Magic('4'):
1791       case Magic('5'):
1792       case Magic('6'):
1793       case Magic('7'):
1794       case Magic('8'):
1795       case Magic('9'):
1799 		refnum = c - Magic('0');
1822       case Magic('z'):
1865       case Magic('%'):
2050       case Magic('['):
2365 	     * - not running into a Magic character
2660 		curchr = Magic(curchr);
2686 		curchr = Magic(curchr);
2694 		    && !(prev_at_start && prevchr == Magic('^'))
2696 			|| (prevchr != Magic('(')
2697 			    && prevchr != Magic('&')
2698 			    && prevchr != Magic('|'))))
2699 		curchr = Magic('*');
2707 			|| prevchr == Magic('(')
2708 			|| prevchr == Magic('|')
2709 			|| prevchr == Magic('&')
2710 			|| prevchr == Magic('n')
2712 			    && prevprevchr == Magic('%'))))
2714 		curchr = Magic('^');
2735 		    curchr = Magic('$');