I don't think this would work as diff compares line by line. Meaning that if I have: 
ABC a b
+ value=3.14
+ value2="name"

[download]
and 
ABC a b
+ value="other"
+ value2="name"

[download]

Then I would have either 1 or 2 lines (depending if returning matched or unmatched lines), which is not what I want. I need to have the full 'line' (starting with a letter plus all the following starting by a +) if either of these are different.

Unless diff understands and deals with continuation lines, which in case I don't know that.

In reply to Re^2: Reading concurrently two files with different number of lines by frogsausage
in thread Reading concurrently two files with different number of lines by frogsausage

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