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- # UNFIXED BUG: hush thinks that ; && || & have the same precedence.
- # According to this doc, && || have higher precedence than ; &.
- # See example below.
- # Precedence of ; is not a problem in practice. Precedence of & is.
- #
- #http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
- #
- #2.9.3 Lists
- #
- #An AND-OR list is a sequence of one or more pipelines separated by
- #the operators "&&" and "||" .
- #
- #A list is a sequence of one or more AND-OR lists separated by the operators
- #';' and '&' and optionally terminated by ';', '&', or <newline>.
- #
- #The operators "&&" and "||" shall have equal precedence and shall be
- #evaluated with left associativity. For example, both of the following
- #commands write solely bar to standard output:
- #
- # false && echo foo || echo bar
- # true || echo foo && echo bar
- #
- #A ';' or <newline> terminator shall cause the preceding AND-OR list
- #to be executed sequentially; an '&' shall cause asynchronous execution
- #of the preceding AND-OR list.
- echo First && sleep 0.2 && echo Third &
- sleep 0.1
- echo Second
- wait
- echo Done
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