+ was properly escaped but only once. $ was not escaped at all. This would result in messages with message IDs containing more than one + or at least on $ to not be shown after limiting. $ itself has to be escaped presumably for the shell. This results in three prepended backslashes in the limit string and six in the config file, as there backslashes themselves have to be escaped.
+was properly escaped but only once.$was not escaped at all. This would result in messages with message IDs containing more than one+or at least on$to not be shown after limiting.$itself has to be escaped presumably for the shell. This results in three prepended backslashes in the limit string and six in the config file, as there backslashes themselves have to be escaped.