allow DS names starting with the same letters as operators

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@828 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_rpncalc.c b/src/rrd_rpncalc.c
index 3c6510f..104ea8f 100644 (file)
--- a/src/rrd_rpncalc.c
+++ b/src/rrd_rpncalc.c
@@ -274,9 +274,9 @@ rpn_parse(void *key_hash,const char *const expr_const,long (*lookup)(void *,char
        } 
        
 #define match_op(VV,VVV) \
-        else if (strncmp(expr, #VVV, strlen(#VVV))==0){ \
-           rpnp[steps].op = VV; \
-           expr+=strlen(#VVV); \
+        else if (strncmp(expr, #VVV, strlen(#VVV))==0 && ( expr[strlen(#VVV)] == ',' || expr[strlen(#VVV)] == '\0' )){ \
+            rpnp[steps].op = VV; \
+            expr+=strlen(#VVV); \
        }