That's not quite true. Only STDOUT is line-buffered by default. In fact, only STDOUT is ever line-buffered(*). I verified this with the following snippet:

perl -e "open(FH, q{>test}); print FH (qq{a\n}); sleep(5); print FH (q
+q{a\n});"

[download]

The lines only appeared after the 5 seconds were over.

(*) Maybe XS or PerlIO can change this? Of course, tie could.

In reply to Re^4: Newline vs Return by ikegami
in thread Newline vs Return by DuaneCenveo

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