Gray area
It's a golf metaphor or something.
Start file
a_golf_ball - > - > - > - > |___________| -
End file
- > - > - > - > |a_golf_ball| -
View Diff
1c1 < a_golf_ball - > - > - > - > |___________| - --- > - > - > - > - > |a_golf_ball| -
Solutions by @zulolosi:
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