vis

a vi-like editor based on Plan 9's structural regular expressions

line-begin.ref

(186B)

      1 0	To the first character of the line.
      2 1 From start to start
      3 _ to start
      4 
      5 
      6 
      7 6 Spaces
      8 7 Tabs
      9 8 Backspace
     10 9 Vertical tab
     11 10 Form feed
     12 11 Carriage return
     13 12 Idempotent (count has no effect)