This snippet turns tabs into "jump to the next multiple of four" padding. This is useful for programs in which tab-stops are hardcoded to a fixed location, rather than a fixed length. (Came out of a comment made by davido in the chatterbox.)

Update:

Two strokes of credited to davido ...

Update:

Modification to allow arbitrary tab stop length.

$_="1\t12\t123\t1234\t12345\t";
$s=4;split/\t/;print map{$_.=q/ /x$s;substr $_,0,$s*int(length($_)/$s)
+}@_;

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In reply to Tab Stop Converter by idsfa

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