The rewrite engine is an absolutely brilliant invention by John Brant and Don Roberts, introduced with the Refactoring Browser (see “A Refactoring Tool for Smalltalk”, 1997). It gives us AST-level matching and rewriting with astonishing power.
&& echo "${USERNAME}:${PASSWORD}" | chpasswd \
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Жители Санкт-Петербурга устроили «крысогон»17:52
Backpressure: good in theory, broken in practice
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