Discard leading whitespace after semicolon properly

main.c

@@ -18,7 +18,7 @@ int main()
 	send_cmd("*SRE 4\n"); // enable SRQ on error
 	send_cmd("FOO:BAR:BAZ\n"); // invalid command causes error
 	send_cmd("SYST:ERR:COUNT?\n"); // error subsystem
-	send_cmd("SYST:ERR:NEXT?;COUNT?;NEXT?\n"); // semicolon works according to spec
+	send_cmd("SYST:ERR:NEXT?; COUNT?; NEXT?\n"); // semicolon works according to spec
 	send_cmd("DATA:BLOB #216abcdefghijklmnop\n"); // binary data block
 
 	send_cmd("APPLY:SINE 50, 1.0, 2.17\n"); // floats

scpi.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.5.1, 2015-12-05T17:34:08. -->
+<!-- Written by QtCreator 3.5.1, 2015-12-05T18:39:54. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

source/scpi_parser.c

@@ -431,7 +431,7 @@ static void pars_cmd_colon(void)
 
 		if (pst.cur_level_i == 0 || pst.cmdbuf_kept) {
 			// top level command starts with colon (or after semicolon - reset level)
-			pars_reset_cmd();
+			pars_reset_cmd(); // clears keep flag
 		} else {
 			// colon after nothing - error
 			scpi_add_error(E_CMD_SYNTAX_ERROR, "Unexpected colon.");
@@ -443,6 +443,7 @@ static void pars_cmd_colon(void)
 		// internal colon - partial match
 		if (match_cmd(true)) {
 			// ok
+			pst.cmdbuf_kept = false; // drop the flag (needed for rejecting whitespace)
 		} else {
 			// error
 			err_no_such_command_partial();
@@ -517,7 +518,7 @@ static void pars_cmd_newline(void)
 /** Whitespace received when collecting command parts */
 static void pars_cmd_space(void)
 {
-	if (pst.cur_level_i == 0 && pst.charbuf_i == 0) {
+	if ((pst.cmdbuf_kept || pst.cur_level_i == 0) && pst.charbuf_i == 0) {
 		// leading whitespace, ignore
 		return;
 	}