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of a regex literal and deciding if `/` is the start of a
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regex or the division operator depends on parsing context.
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The read algorithm follows but see also the DLS 14 [paper](https://github.com/mozilla/sweet.js/blob/master/doc/dls2014/sweetjs.pdf?raw=true) which goes into more detail.
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### Give lookbehind to the reader
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So to handle the problem of `/` we can use "almost one" lookbehind to
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| ... | ... | @@ -463,4 +465,3 @@ Useful papers on macros: |
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* Refining Syntactic Sugar: Tools for Supporting Macro Development
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* Fortifying Macros
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* Composable and Compilable Macros |
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