diff -r 1d2be1b31e70 -r d7c4ba50b7d8 dav/scfg.c
--- a/dav/scfg.c	Mon Nov 14 19:02:40 2016 +0100
+++ b/dav/scfg.c	Fri Nov 18 13:39:20 2016 +0100
@@ -39,13 +39,17 @@
 #define xstreq(a,b) xmlStrEqual(BAD_CAST a, BAD_CAST b)
 
 
-#define print_error(...) \
+#define print_error(lineno, ...) \
     do {\
-        fprintf(stderr, "Error (sync.xml): " __VA_ARGS__); \
+        fprintf(stderr, "Error (sync.xml line %u): ", lineno); \
+        fprintf(stderr, __VA_ARGS__); \
         fprintf(stderr, "Abort.\n"); \
     } while(0);
-#define print_warning(...) \
-    fprintf(stderr, "Warning (sync.xml): " __VA_ARGS__);
+#define print_warning(lineno, ...) \
+    do {\
+        fprintf(stderr, "Warning (sync.xml line %u): ", lineno); \
+        fprintf(stderr, __VA_ARGS__); \
+    } while(0);
 
 #ifdef _WIN32
 #define ENV_HOME getenv("USERPROFILE")
@@ -106,7 +110,8 @@
             if(xstreq(node->name, "directory")) {
                 ret = scfg_load_directory(node);
             } else {
-                print_error("unknown config element: %s\n", node->name);
+                print_error(node->line,
+                        "unknown config element: %s\n", node->name);
                 ret = 1;
             }
         }
@@ -118,17 +123,20 @@
     return ret;
 }
 
-static UcxList* add_regex_pattern(UcxList *list, char *value) {
+static UcxList* add_regex_pattern(UcxList *list, char *value,
+        unsigned short xmlline) {
     regex_t *regex = malloc(sizeof(regex_t));
     if (regcomp(regex, value, REG_EXTENDED|REG_NOSUB)) {
-        fprintf(stderr, "Invalid regular expression (%s) ... skipped\n", value);
+        print_warning(xmlline,
+                "Invalid regular expression (%s) ... skipped\n", value);
         return list;
     } else {
         return ucx_list_append(list, regex);
     }
 }
 
-static int scfg_load_filter(xmlNode *node, UcxList **include, UcxList **exclude) {
+static int scfg_load_filter(xmlNode *node,
+        UcxList **include, UcxList **exclude) {
     node = node->children;
     
     while(node) {
@@ -136,18 +144,20 @@
             char *value = util_xml_get_text(node);
             if(xstreq(node->name, "include")) {
                 if(value) {
-                    *include = add_regex_pattern(*include, value);
+                    *include = add_regex_pattern(*include, value, node->line);
                 }
             } else if(xstreq(node->name, "exclude")) {
                 if(value) {
-                    *exclude = add_regex_pattern(*exclude, value);
+                    *exclude = add_regex_pattern(*exclude, value, node->line);
                 }
             } else {
-                print_error("unknown filter config element: %s\n", node->name);
+                print_error(node->line,
+                        "unknown filter config element: %s\n", node->name);
                 return 1;
             }
             if(!value) {
-                print_error("missing value for filter: %s\n", node->name);
+                print_error(node->line,
+                        "missing value for filter: %s\n", node->name);
                 return 1;
             }
         }
@@ -172,6 +182,7 @@
     bool lockpull = false;
     bool lockpush = false;
     
+    unsigned short parentlineno = node->line;
     node = node->children;
     while(node) {
         if(node->type == XML_ELEMENT_NODE) {
@@ -181,7 +192,8 @@
                 /* TODO: maybe this should only be reported, if the key is valid
                  * But this makes the code very ugly.
                  */
-                print_error("missing value for directory element: %s\n",
+                print_error(node->line,
+                        "missing value for directory element: %s\n",
                         node->name);
                 return 1;
             }
@@ -206,7 +218,7 @@
                 if(util_strtoint(value, &i) && i >= 0) {
                     max_retry = (int)i;
                 } else {
-                    print_warning("unsigned integer value "
+                    print_warning(node->line, "unsigned integer value "
                             "expected in <max-retry> element\n");
                 }
             } else if(xstreq(node->name, "backup-on-pull")) {
@@ -216,8 +228,8 @@
             } else if(xstreq(node->name, "lock-push")) {
                 lockpush = util_getboolean(value);
             } else {
-                print_error("unknown directory config element: %s\n",
-                        node->name);
+                print_error(node->line,
+                        "unknown directory config element: %s\n", node->name);
                 return 1;
             }
         }
@@ -225,19 +237,22 @@
     }
     
     if(!name) {
-        print_error("missing name element for directory\n");
+        print_error(parentlineno, "missing name element for directory\n");
         return 1;
     }
     if(!path) {
-        print_error("missing path element for directory %s\n", name);
+        print_error(parentlineno,
+                "missing path element for directory %s\n", name);
         return 1;
     }
     if(!repository) {
-        print_error("missing repository element for directory %s\n", name);
+        print_error(parentlineno,
+                "missing repository element for directory %s\n", name);
         return 1;
     }
     if(!database) {
-        print_error("missing database element for directory %s\n", name);
+        print_error(parentlineno,
+                "missing database element for directory %s\n", name);
         return 1;
     }