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e83dcff6
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2015-10-06T17:18:16
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Add support for arithmetic environments for the Bash language
Currently arithmetic operators are wrongly matched all over the
place. For example the dash in `ls -la` is highlighted as
a minus operator, but for Bash it is only a string. Another
example would be a simple path like this `cat 801-file.txt`. Here
`801` is wrongly highlighted as a number and `-` is highlighted as
an operator.
Bash only supports numbers and arithmetic operators inside of a so called
arithemtic environment `$((3 + 4))`. By supporting this and
limiting numbers and arithmetic operators to arithemtic
environments, a lot of wrongly highlighted stuff can be avoided.
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