On 1/30/21 6:50 PM, L A Walsh wrote:
Since this "https://tiswww.case.edu/php/chet/bash/POSIX"; doesn't
seem to be version specific, I'm assuming these are
in the latest bash version.
I don't understand the benefit of the differences involving
hashed-commands and recovery behavior. It seemed like these
behaviors may have served a purpose at one time, but now seem
more likely to create an unnecessary failure case.
First behavior: How is it beneficial for bash to
store a non-executable in the command-hash?
Probably not very, but it's not all that harmful. The `checkhash' option
overrides this.
What's really wasteful is to put something non-executable in the hash table
when `checkhash' is set, only to remove it the next time you try to execute
it. I changed that a few weeks back.
And second, related behavior: Not searching for an alternative
in the PATH if the old hashed value stops working.
Again, `checkhash' covers this.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU [email protected] http://tiswww.cwru.edu/~chet/
