fix parsing of multiline strings (#516)

Author: shueybubbles

Diff for: pkg/sqlcmd/batch.go

@@ -104,10 +104,13 @@ parse:
 			if ok {
 				b.quote = 0
 			}
+			// don't bother looking for a command
+			scannedCommand = true
 		// inside a multiline comment
 		case b.comment:
 			i, ok = readMultilineComment(b.raw, i, b.rawlen)
 			b.comment = !ok
+			scannedCommand = true
 		// start of a string
 		case c == '\'' || c == '"' || c == '[':
 			b.quote = c

Diff for: pkg/sqlcmd/batch_test.go

@@ -38,6 +38,8 @@ func TestBatchNext(t *testing.T) {
 		{"select [bracket", []string{"select [bracket"}, nil, "["},
 		{"select [bracket]]a]", []string{"select [bracket]]a]"}, nil, "-"},
 		{"exit_1", []string{"exit_1"}, nil, "-"},
+		{"print ('me\n!!me')", []string{"print ('me" + SqlcmdEol + "!!me')"}, nil, "-"},
+		{"/*comment\n!!me*/", []string{"/*comment" + SqlcmdEol + "!!me*/"}, nil, "-"},
 	}
 	for _, test := range tests {
 		b := NewBatch(sp(test.s, "\n"), newCommands())