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Re: ! in PS1 in posix mode

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Chet Ramey wrote:
> On 10/12/15 7:02 PM, Linda Walsh wrote:
> 
>>> It happens in posix mode.
>> ---
>>     How lame!  It's a '!' in a quoted string.  Another example
>> of posix braindeath -- how long before people realize that the
>> thing branded 'posix' now isn't the real posix that was started
>> to *describe* behaviors, not prescribe or proscribe behaviors.
> 
> Do you realize that this prompt expansion was in ksh since at least
> ksh-86?  ksh-88 was one of the Posix base documents, and that
> expansion was estabished behavior by the time Posix started its work.
---
Haven't used ksh for some time....I thought the '!' stuff came
from csh?  It seemed so pointless, since having to look up
things by command number I thought, was way too much work... searching
via a string in the line seemed so much faster...

For stuff I typed last week or earlier, I'd use grep on the hist files.

I thought to have all my hist files merged and deduped... but the resulting
master hist file -- .. I used it for a while (somewhat accidently  as it was
renamed to a normal hist file @ around 2-3M in length).

command response was quite slow (took a while to figure out it was
the history updating every command that caused a delay of about
2-3 seconds/command).  
I don't think I have all the kinks in the combining routines worked
out yet either... but certainly wouldn't want to switch to the newest
master @ 6.4M until history updating is sped up a bit... (I'm not
holding my break... at least I can still browse/grep it by tty#)...

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Re: ! in PS1 in posix mode Linda Walsh <bash@tlinx.org> - 2015-10-12 22:46 -0700

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