Op 15-04-21 om 22:43 schreef Harald van Dijk: [...]
In specific cases, the shell may be able to detect that these issues cannot be a problem. In those specific cases, the optimisation should be perfectly valid and any reasons why it should or should not be performed are not of a technical nature.
It makes sense now: instead of stdio, ksh93 uses libast's sfio, which on most systems is capable of peeking ahead on arbitrary files without consuming data. And it doesn't care if the input is a file or a string because both are turned into sfio input streams. Thanks to Chet and Harald for confirming that I've not overlooked some reason why the optimisation shouldn't be re-enabled.
-- || modernish -- harness the shell || https://github.com/modernish/modernish || || KornShell lives! || https://github.com/ksh93/ksh
