[gparted/systemd-masking] Don't try to mask nonsense Systemd \xe2\x97\x8f.service (#129)

[Mike Fleetwood <mfleetwo src gnome org>]

commit d5ddf907b872f409bc1f1a3670c53161c9e72fcc
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Mon Jan 4 21:46:56 2021 +0000

    Don't try to mask nonsense Systemd \xe2\x97\x8f.service (#129)
    
    With Systemd 246 on Fedora 33, running GParted reports this error and no
    longer masks the system mount units when running:
    
        $ gparted
        Unit \xe2\x97\x8f.service does not exist, proceeding anyway.
        Unit \xe2\x97\x8f.service does not exist, proceeding anyway.
        GParted 1.1.0
        configuration --enable-libparted-dmraid --enable-online-resize
        libparted 3.3
    
        $ systemctl list-units -t mount --full --all --no-legend
          -.mount                       loaded    active   mounted Root Mount
          boot.mount                    loaded    active   mounted /boot
          dev-hugepages.mount           loaded    active   mounted Huge Pages File System
          dev-mqueue.mount              loaded    active   mounted POSIX Message Queue File System
          home.mount                    loaded    active   mounted /home
          proc-fs-nfsd.mount            loaded    inactive dead    NFSD configuration filesystem
          proc-sys-fs-binfmt_misc.mount loaded    inactive dead    Arbitrary Executable File Formats File 
System
          run-user-1000-gvfs.mount      loaded    active   mounted /run/user/1000/gvfs
          run-user-1000.mount           loaded    active   mounted /run/user/1000
          run-user-42.mount             loaded    active   mounted /run/user/42
          sys-fs-fuse-connections.mount loaded    active   mounted FUSE Control File System
          sys-kernel-config.mount       loaded    active   mounted Kernel Configuration File System
          sys-kernel-debug.mount        loaded    active   mounted Kernel Debug File System
          sys-kernel-tracing.mount      loaded    active   mounted Kernel Trace File System
        * sysroot.mount                 not-found inactive dead    sysroot.mount
          tmp.mount                     loaded    active   mounted Temporary Directory (/tmp)
          var-lib-machines.mount        loaded    inactive dead    Virtual Machine and Container Storage 
(Compatibility)
          var-lib-nfs-rpc_pipefs.mount  loaded    active   mounted RPC Pipe File System
        * var.mount                     not-found inactive dead    var.mount
    
        ^
       [Unicode Black Circle character (U+25CF) replaced with star to avoid
       making this this commit message Unicode.]
    
    Currently the gparted shell wrapper lists the Systemd mount units and
    takes the first space separated column as the unit name to mask.  If the
    LOAD status of the unit not "loaded" then Systemd prefixes the name with
    an optional Black Circle.  Prior to Systemd 246 these extra 2 characters
    at the start of the line, including the optional Black Circle, were
    suppressed by the --no-legend option.  But with Systemd 246 this no
    longer happens.  As the mount unit names no longer start in the first
    character no units are masked; and as Unicode Black Circle character is
    UTF-8 byte sequence E2 97 8F this error message is produced for each
    highlighted line:
        Unit \xe2\x97\x8f.service does not exist, proceeding anyway.
    
    Fix by adding the --plain option to suppress the optional Black Circle
    in the systemctl output.  Confirmed this option is available in the
    oldest supported distributions with Systemd.
        RedHat / CentOS 7   Systemd 219   systemctl has --plain option.
        Ubuntu 16.04 LTS    Systemd 229   systemctl has --plain option.
    
    Closes #129 - Unit \xe2\x97\x8f.service does not exist, proceeding
                  anyway

 gparted.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gparted.in b/gparted.in
index e021eb25..7fa8b363 100755
--- a/gparted.in
+++ b/gparted.in
@@ -144,7 +144,7 @@ done
 #  Use systemctl to prevent automount by masking currently unmasked mount points
 #
 if test "x$HAVE_SYSTEMCTL" = "xyes"; then
-       MOUNTLIST=`systemctl list-units --full --all -t mount --no-legend \
+       MOUNTLIST=`systemctl list-units --full --all -t mount --no-legend --plain \
          | grep -v masked | cut -f1 -d' ' \
          | egrep -v 
'^(dev-hugepages|dev-mqueue|proc-sys-fs-binfmt_misc|run-user-.*-gvfs|sys-fs-fuse-connections|sys-kernel-config|sys-kernel-debug)'`
        systemctl --runtime mask --quiet -- $MOUNTLIST