make buffer_get_token write \0 to buffer on end of file so it can be

distinguished from a length 0 token.

CHANGES

@@ -1,4 +1,5 @@
 0.13:
+  fixed several bugs in test/uudecode.c
 
 0.12:
   add textcode api for uuencode/uudecode, base64, quoted printable,

buffer.h

@@ -38,6 +38,11 @@ extern int buffer_bget(buffer* b,char* x,unsigned int len);
 extern int buffer_feed(buffer* b);
 extern int buffer_getc(buffer* b,char* x);
 extern int buffer_getn(buffer* b,char* x,unsigned int len);
+
+/* read bytes until the destination buffer is full (len bytes), end of
+ * file is reached or the read char is in charset (setlen bytes).  An
+ * empty line when looking for \n will write '\n' to x and return 0.  If
+ * EOF is reached, \0 is written to the buffer */
 extern int buffer_get_token(buffer* b,char* x,unsigned int len,const char* charset,unsigned int setlen);
 #define buffer_getline(b,x,len) buffer_get_token((b),(x),(len),"\n",1)
 

buffer/buffer_get_token.c

@@ -8,7 +8,7 @@ int buffer_get_token(buffer* b,char* x,unsigned int len,const char* charset,unsi
   for (blen=0;blen<len;++blen) {
     register int r;
     if ((r=buffer_getc(b,x))<0) return r;
-    if (r==0) break;
+    if (r==0) { *x=0; break; }
     if (byte_chr(charset,setlen,*x)<setlen) break;
     ++x;
   }