Hi,
I have tested CLE and noticed this side effect.
My system has background tasks at boot. these tasks write messages on
the console. At boot, a DHCP thread gets an IP after a delay.
When I typed the help command, the first h appeared twice: at first
position of the line, and also at the correct expected place because of
the prompt length.
This happens because the prompt is "hidden".
It looks like this:
dhcp thread done
h help
help usage: help [-v] [<cmd>]
Notice the h, 4 spaces, help.
This is not very important, but since you are working on it, maybe you
want to have a look at this.
I dont know if that is a regression, I did not use CLE before.
I wanted a simple test to reproduce the issue.
I tried:
nsh> echo "abcd" &
I think this produces a strange behaviour that requires control-C to
recover and then writes:
nsh: nsh_session: cle failed: 22
This may be another bug? what do you think? Do you want me to send a new
github issue to work on this?
Sebastien
Le 10/03/2023 à 10:38, Qi3 Huang 黄齐 a écrit :
Hi all:
I've submitted a new patch to GitHub
(https://github.com/apache/nuttx-apps/pull/1650), in this is to maintain the
cursor position in cle's internal instead of query from terminal, this avoid
the query operation before each line read operation.
Then the cle's behavior is much more like readline, and also avoid some
potential issues if the connection between nuttx and PC is not so stable
(serial driver? or cable link?).
But, this patch assume that the nsh prompt is always shown at line start
(ensure it by clear line command in vt100), is there any side effect for you?
BR,
Huang Qi
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