On 09/11/10 23:02, Eric Blake wrote:
2. User aspect: Is anyone aware of a script that intentionally uses the full power of dynamic scoping available through 'local' which would break if scoping switched to static?
FWIW, some scripts use "local IFS" to reset IFS to a sane value, and have the shell take care of restoring it afterwards. This works with ksh's typeset, but because of the static scoping only so long as no other shell functions get called, or those other shell functions also take the effort to handle IFS correctly. In the scripts I have been able to find, other shell functions do get called, but they themselves set IFS too. Still, it may be worth keeping in mind, if only to serve as one of the few examples of when dynamic scoping would have been slightly more useful.
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