Truncated names of subvolumes and/or snapshots containing spaces

[SpiritInAShell]

> btrfs-list --version
btrfs-list v2.2 using btrfs v5.4.1

Having a snapshot and a subvolume containing spaces in its name.

CAMERA_BACKUP/@2023-07-02                                                                                   subvol       -  
CAMERA_BACKUP/.@2023-07-02                                                                                  rosnap       -  

Original was something like CAMERA_BACKUP/.@2023-07-02 Some description

[speed47]

Indeed, this bug can be reproduced easily:

root@nas:/git# btrfs sub create "foo bar with space"
Create subvolume './foo bar with space'
root@nas:/git# btrfs-list /git
WARNING: to get refer/excl size information, please enable qgroups (btrfs quota enable /git)
NAME                                  TYPE     EXCL  MOUNTPOINT
git                                     fs   71.47G (single/dup, 22.52G/100.00G free, 22.52%)
   [main]                          mainvol       -  /git
   foo                              subvol       -