====== regex ======

<code>Replace $abc$ with $`abc`$:

\$([^$]*)\$

\$`\1`\$</code>



Replace 4. 5 with 4.5

<code>
(\d)[.]\s+(\d)

$1.$2


([a-zA-Z])[.]([a-zA-Z])
$1. $2

</code>
{{tag>}}

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