fork(2) download 
  1. import re
  2. text = "  \t  hello there\n  \t  how are you?\n  \t HHHH"
  3. match = re.search(r'(?m)\A(.*).*(?:\n?^\1.*$)*\n?\Z', text)
  4. print ("'" + match.group(1) + "'")
Success #stdin #stdout 0.09s 10840KB
comments (?)
stdin 
Standard input is empty
stdout 
'  	 '
https://ideone.com/cr0fG9
language:
Python (cpython 2.7.16)
created:
12 years ago
visibility:
public

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