shell redirection unable to append

[adbennet]

$ echo foo>tmp.txt
$ ls
tmp.txt
$ echo bar>>tmp.txt
$ ls
>tmp.txt tmp.txt

I tried looking at the code to track this down, but quickly got lost.

[holzschu]

Yes, that is a known issue of ios_system. It has been on the todo list for quite some time: holzschu/ios_system#4
The issue is in lines 1040-1080 of ios_system.m. I will look into it at some point.