> Le 9 févr. 2019 à 00:21, Peng Yu <pengyu...@gmail.com> a écrit : > > Hi Simon, > >> Normally, you'd use lexer states to activate/deactivate rules. The >> primitive approach would be >> >> %x INITIAL HEREDOC > > I see %x is from flex. Bash can support nested heredoc. How can it be > implemented in flex?
Flex offers push/pop for start conditions. See yypush_buffer_state and yypop_buffer_state. _______________________________________________ help-bison@gnu.org https://lists.gnu.org/mailman/listinfo/help-bison
