From dc0b0be755b41f3c195913631fedf023ad69192e Mon Sep 17 00:00:00 2001
From: Paul Fox <pgf@foxharp.boston.ma.us>
Date: Fri, 31 Mar 2006 15:14:49 +0000
Subject: [PATCH] this commit:     - adds range support to character classes  
   - fixes out-of-bounds references to the case-folding
 array         when doing case comparisons for 8-bit message
 text     - makes character classes as case tolerant as the
 rest         of the pick regexp machine.  (where lowercase
 chars in         patterns should match uppercase in the
 text.)     - fixes an uninitialized pointer warning, which
 might actually have         been a real bug

---
 uip/picksbr.c |   43 +++++++++++++++++++++++++++++++++++++------
 1 file changed, 37 insertions(+), 6 deletions(-)

diff --git a/uip/picksbr.c b/uip/picksbr.c
index a7276d7..001bf08 100644
--- a/uip/picksbr.c
+++ b/uip/picksbr.c
@@ -82,7 +82,7 @@ static struct swit parswit[] = {
 #define	STAR	01
 
 #define LBSIZE  1024
-#define	ESIZE	256
+#define	ESIZE	1024
 
 
 static char linebuf[LBSIZE + 1];
@@ -105,6 +105,23 @@ static char cc[] = {
 	0150,0151,0152,0153,0154,0155,0156,0157,
 	0160,0161,0162,0163,0164,0165,0166,0167,
 	0170,0171,0172,0173,0174,0175,0176,0177,
+
+	0200,0201,0202,0203,0204,0205,0206,0207,
+	0210,0211,0212,0213,0214,0215,0216,0217,
+	0220,0221,0222,0223,0224,0225,0226,0227,
+	0230,0231,0232,0233,0234,0235,0236,0237,
+	0240,0241,0242,0243,0244,0245,0246,0247,
+	0250,0251,0252,0253,0254,0255,0256,0257,
+	0260,0261,0262,0263,0264,0265,0266,0267,
+	0270,0271,0272,0273,0274,0275,0276,0277,
+	0300,0301,0302,0303,0304,0305,0306,0307,
+	0310,0311,0312,0313,0314,0315,0316,0317,
+	0320,0321,0322,0323,0324,0325,0326,0327,
+	0330,0331,0332,0333,0334,0335,0336,0337,
+	0340,0341,0342,0343,0344,0345,0346,0347,
+	0350,0351,0352,0353,0354,0355,0356,0357,
+	0360,0361,0362,0363,0364,0365,0366,0367,
+	0370,0371,0372,0373,0374,0375,0376,0377,
 };
 
 /*
@@ -558,7 +575,7 @@ gcompile (struct nexus *n, char *astr)
 {
     register int c;
     int cclcnt;
-    register char *ep, *dp, *sp, *lastep;
+    register char *ep, *dp, *sp, *lastep = 0;
 
     dp = (ep = n->n_expbuf) + sizeof n->n_expbuf;
     sp = astr;
@@ -602,11 +619,25 @@ gcompile (struct nexus *n, char *astr)
 		    c = *sp++;
 		    ep[-2] = NCCL;
 		}
-		do {
+		if (c == '-') {
 		    *ep++ = c;
 		    cclcnt++;
-		    if (c == '\0' || ep >= dp)
-			goto cerror;
+		    c = *sp++;
+		}
+		do {
+		    if (c == '-' && *sp != '\0' && *sp != ']') {
+			for (c = ep[-1]+1; c < *sp; c++) {
+		    	    *ep++ = c;
+		    	    cclcnt++;
+			    if (c == '\0' || ep >= dp)
+				goto cerror;
+			}
+		    } else {
+			*ep++ = c;
+			cclcnt++;
+			if (c == '\0' || ep >= dp)
+			    goto cerror;
+		    }
 		} while ((c = *sp++) != ']');
 		lastep[1] = cclcnt;
 		continue;
@@ -800,7 +831,7 @@ cclass (char *aset, int ac, int af)
 
     n = *set++;
     while (--n)
-	if (*set++ == c)
+	if (*set++ == c || set[-1] == cc[(unsigned char)c])
 	    return (af);
 
     return (!af);
-- 
1.7.10.4