Hello all,

I've got a problem with running the "history" command in a sourced
(preloaded) function:

- - - - - - - - - -
histtest() {
history -c
history -s "foobar"
}
histtest
- - - - - - - - - -

When I source this script the history gets cleared and the "foobar" entry is added to it. IOW, it works as expected.

However, when I than afterwards just type "histtest" on the commandline the history is cleared, but the "foobar" entry isn't added.

Question: what causes the difference and how do I fix it ?

Remark: the trouble seems to come from clearing the history. When I remove that line the "foobar" entry is, in both cases, added as expected.

Regards,
Rudy Wieser

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Can someone at least test the script and tell me if it works the same (unexpected to me) way for you ?

Regards,
Rudy Wieser

--- SoupGate-Win32 v1.05
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On 22/05/2023 07:52, R.Wieser wrote:

Can someone at least test the script and tell me if it works the same (unexpected to me) way for you ?

yes.
not tested on a pi but on x86 machine running mint.

when I type the commands it does clear the history then adds foobar but
when run with the command histtest it just clears the history.

almost looks as if the clear is performed on exit from the function.


--
Nev
It causes me a great deal of regret and remorse
that so many people are unable to understand what I write.

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On 2023-05-22, R.Wieser <address@is.invalid> wrote:

Can someone at least test the script and tell me if it works the same (unexpected to me) way for you ?

Might be worth asking in comp.unix.shell ?

--- SoupGate-Win32 v1.05
* Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)

Nev,

Can someone at least test the script and tell me if it works the same
(unexpected to me) way for you ?

yes.

not tested on a pi but on x86 machine running mint.

Even better ! It means (to me) that its common behaviour, not because of
some RPi specific adjustment.

almost looks as if the clear is performed on exit from the function.

Yes, thats pretty-much the same conclusion I came to. On the other hand, I
do not know anything about the innards of bash, so it /could/ be something
else altogether .. :-)

Thanks for the testing.

Regards,
Rudy Wieser

--- SoupGate-Win32 v1.05
* Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)

Jim,

Might be worth asking in comp.unix.shell ?

Thanks for that. Just copy-pasted the question into that newsgroup. Lets
see if they know what causes it ...

I also posted a similar/same question into alt.os.linux, but have not seen
any response. :-\

Regards,
Rudy Wieser

--- SoupGate-Win32 v1.05
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On 22/05/2023 13:06, Jim Jackson wrote:

On 2023-05-22, R.Wieser <address@is.invalid> wrote:

Can someone at least test the script and tell me if it works the same
(unexpected to me) way for you ?

Might be worth asking in comp.unix.shell ?

comp.os.linux.misc will have the answer
--
Socialism is the philosophy of failure, the creed of ignorance and the
gospel of envy.

Its inherent virtue is the equal sharing of misery.

Winston Churchill

--- SoupGate-Win32 v1.05
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