Issue 272 implement

[milssky]

#272

[sobolevn]

There are couple of main things we need to address before I can even start reviewing it:

• This should be off by default, this can break users' stuff. Since behaviour change like this can be very hard to debug
• We need a CLI flag to enable this feature
• We need to find some other way to evaluate variables, re is not good enough for that

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (6bd75f4) to head (0ed121c).
Report is 29 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #357   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines           83        96   +13     
  Branches        18        21    +3     
=========================================
+ Hits            83        96   +13     

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[milssky]

There are couple of main things we need to address before I can even start reviewing it:

• This should be off by default, this can break users' stuff. Since behaviour change like this can be very hard to debug
• We need a CLI flag to enable this feature
• We need to find some other way to evaluate variables, re is not good enough for that

Done.
The code without regex some ugly =D