Match comments

[macman]

hello everyone,
I wanted to use regular expressions to match comments, 

But, lables and comments are very similar. How to distinguish them?

In the following example:
Line 1 was deleted
Line 3 was not deleted
Line 8 was not deleted

Expected results:
___________________________
 lable1
run "notepad"
_i+1
if _i=3
    ret
goto lable1
___________________________

Any suggestions are welcome. Thanks in advance

Macro Match comments
Trigger Aq /QM     

Code:

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_s.getsel
_s.replacerx("^\s.+\n|\s;;.+" "")
mes _s
out _s

Macro comment test

Code:

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;lable1
run "notepad" ;;comment
;run "notepad" ;;comment2
_i+1
if _i=3
,ret
goto lable1
;coment3