Regex pattern should not be escaped

[steinybot]

Description

A clear and concise description of what the bug is.

Versions

Component	Version
Zsh Escape	da39a3ee5e6b4b0d3255bfef95601890afd80709 (git rev-parse HEAD)
OS	Windows 10
Zsh	zsh 5.5.1 (i686-pc-cygwin) (zsh --version)

Steps To Reproduce

Steps to reproduce the bug:

1. Use the following file bad-script.zsh:

dir=$1
cd $dir

2. Run:

zsh-escape.zsh report bad-script.zsh

Expected Behaviour

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Actual Behaviour

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Screenshots and/or Logs

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Additional Context

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