prepend * to every non-blank line
Prepend an asterisk to every non-blank line in the input file.
Start file
This is a very short file, but it is still full of surpises.
End file
*This is a *very short *file, but it is *still *full *of *surpises.
View Diff
1,2c1,2 < This is a < very short --- > *This is a > *very short 4,6c4,6 < file, but it is < still < full --- > *file, but it is > *still > *full 8c8 < of --- > *of 10c10 < surpises. --- > *surpises.
Solutions by @marlow_th:
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