diff --git a/HISTORY b/HISTORY
index c96f635..af272d3 100644
--- a/HISTORY
+++ b/HISTORY
@@ -3,6 +3,7 @@ Version 1.40  2018-08-20
   * add function conn_pool_parse_server_info and conn_pool_load_server_info
   * support directive: #@add_annotation, for example:
     #@add_annotation CONFIG_GET /usr/lib/libshmcache.so /etc/libshmcache.conf
+  * add function fc_split_string and fc_match_delim
 
 Version 1.39  2018-07-31
   * add #@function REPLACE_VARS
diff --git a/src/ini_file_reader.c b/src/ini_file_reader.c
index 820d64e..6fc16e4 100644
--- a/src/ini_file_reader.c
+++ b/src/ini_file_reader.c
@@ -840,7 +840,7 @@ static int iniAddAnnotation(char *params)
     int result;
 
     trim(params);
-    count = splitEx(params, ' ', cols, MAX_PARAMS);
+    count = fc_split_string(params, " \t", cols, MAX_PARAMS);
     if (count < 2)
     {
         logError("file: "__FILE__", line: %d, "
@@ -987,6 +987,7 @@ static int iniDoLoadItemsFromBuffer(char *content, IniContext *pContext)
             isAnnotation = 0;
         }
 
+		STR_TRIM(pLine);
 		if (*pLine == '#' && \
 			strncasecmp(pLine+1, "include", 7) == 0 && \
 			(*(pLine+8) == ' ' || *(pLine+8) == '\t'))
@@ -1091,8 +1092,7 @@ static int iniDoLoadItemsFromBuffer(char *content, IniContext *pContext)
             continue;
         }
 
-		STR_TRIM(pLine);
-		if (*pLine == '#' || *pLine == '\0')
+		if (*pLine == '\0')
 		{
 			continue;
 		}
diff --git a/src/shared_func.c b/src/shared_func.c
index 6fbcb75..4aa3ae1 100644
--- a/src/shared_func.c
+++ b/src/shared_func.c
@@ -747,6 +747,59 @@ int splitEx(char *src, const char seperator, char **pCols, const int nMaxCols)
 	return count;
 }
 
+bool fc_match_delim(const char *str, const char *delim)
+{
+    const char *sp;
+    const char *send;
+    const char *dp;
+    const char *dend;
+
+    send = str + strlen(str);
+    dend = delim + strlen(delim);
+    for (sp=str; sp<send; sp++)
+    {
+        for (dp=delim; dp<dend; dp++)
+        {
+            if (*sp == *dp)
+            {
+                break;
+            }
+        }
+
+        if (dp == dend)
+        {
+            return false;
+        }
+    }
+
+    return true;
+}
+ 
+int fc_split_string(char *src, const char *delim, char **pCols, const int nMaxCols)
+{
+    char *token;
+    char *stringp;
+    int count = 0;
+
+    stringp = src;
+    while ((token=strsep(&stringp, delim)) != NULL)
+    {
+        if (count >= nMaxCols)
+        {
+            break;
+        }
+
+        if (fc_match_delim(token, delim))
+        {
+            continue;
+        }
+
+        pCols[count++] = token;
+    }
+
+    return count;
+}
+
 int my_strtok(char *src, const char *delim, char **pCols, const int nMaxCols)
 {
     char *p;
diff --git a/src/shared_func.h b/src/shared_func.h
index 346f19f..81423d2 100644
--- a/src/shared_func.h
+++ b/src/shared_func.h
@@ -366,6 +366,25 @@ void freeSplit(char **p);
 */
 int splitEx(char *src, const char seperator, char **pCols, const int nMaxCols);
 
+
+/** split string by delimiter characters
+ *  parameters:
+ *  	src: the source string, will be modified by this function
+ *  	delim: the delimiter characters
+ *  	pCols: store split strings
+ *  	nMaxCols: max columns (max split count)
+ *  return: string array / column count
+*/
+int fc_split_string(char *src, const char *delim, char **pCols, const int nMaxCols);
+
+/** if the input string contains all delimiter characters
+ *  parameters:
+ *  	str: the input string
+ *  	delim: the delimiter characters
+ *  return: true for contains all delimiter characters, otherwise false
+*/
+bool fc_match_delim(const char *str, const char *delim);
+
 /** split string
  *  parameters:
  *  	src: the source string, will be modified by this function
diff --git a/src/tests/test.ini b/src/tests/test.ini
index 9215d26..b43a45f 100644
--- a/src/tests/test.ini
+++ b/src/tests/test.ini
@@ -1,13 +1,19 @@
+
+#@set author_name = yuqing
+#@set OS_NAME = $(uname -a | awk '{print $1;}')
+
 # to support #@function CONFIG_GET
 # the version of libshmcache >= 1.0.7
-#@add_annotation CONFIG_GET /usr/local/lib/libshmcache.so /usr/local/etc/libshmcache.conf
+
+#@if %{OS_NAME} in [Darwin]
+  #@add_annotation CONFIG_GET /usr/local/lib/libshmcache.so /usr/local/etc/libshmcache.conf
+#@else
+  #@add_annotation CONFIG_GET /usr/lib/libshmcache.so /etc/libshmcache.conf
+#@endif
 
 #@function CONFIG_GET
 app.version = app1.key1
 
-#@set author_name = yuqing
-#@set os_name = $(uname -a | awk '{print $1;}')
-
 #@function SHELL_EXEC
 host = hostname
 
@@ -17,7 +23,7 @@ bind_ip = inner[0]
 #@function EXPRESS_CALC
 thread_count = 5 * 4 + 6
 
-#@if %{os_name} in [Linux, Darwin]
+#@if %{OS_NAME} in [Linux, Darwin]
 [AccessLogSpaceCharConvert]
 # format: src = dest
 # src can be a printable char or a backslash char pair such as \t