The dot loses its special meaning in classes, so a backslash sequence is not necessary.

I have corrected the vocabulary mistakes in Indonesian, changing "Lompat" to "Lompat Pagar"

thanks that fixed it and now it is starting! (now i have to find time to do the quickstart learning ;-) )

Build of de.gmo is broken with gettext-tiny since version 1.3.2 and commit 80e0f662861e6d0ad8888f61c19c0695978779bf:

file=`echo de | sed 's,.*/,,'`.gmo \
  && rm -f $file && /home/buildroot/autobuild/instance-2/output-1/host/bin/msgfmt -o $file de.po
Makefile:102: recipe for target 'de.gmo' failed

Fixes:

• http://autobuild.buildroot.org/results/69f4e5fa44208429b143011640971a61d709d5b1

Signed-off-by: Fabrice Fontaine [email protected]

In on_remove_theme_clicked: both variable is used uninitialized, which causes lxappearance segfault when removing theme. Initialize this correctly.

============================================================= Ref: https://sourceforge.net/p/lxde/bugs/866/
Actually this causes lxappearance segfault when trying

• Move to "Icon Theme" tab
• Select one icon theme
• Click "Remove" icon

Then:

Thread 1 "lxappearance" received signal SIGSEGV, Segmentation fault.
0x000055555555e904 in on_remove_theme_clicked (btn=0x555555750e40, user_data=<optimized out>)
    at /home/tasaka1/rpmbuild/fedora-specific/LXDE/lxappearance/rawhide/lxappearance-0.6.3/lxappearance/src/icon-theme.c:174
174	        gboolean both = theme->has_icon && theme->has_cursor;
Missing separate debuginfos, use: dnf debuginfo-install adwaita-gtk2-theme-3.28-12.fc34.x86_64 atk-2.36.0-3.fc34.x86_64 bzip2-libs-1.0.8-6.fc34.x86_64 cairo-1.17.4-3.fc34.x86_64 cairo-gobject-1.17.4-3.fc34.x86_64 dbus-libs-1.12.20-3.fc34.x86_64 fontconfig-2.13.93-5.fc34.x86_64 freetype-2.10.4-3.fc34.x86_64 fribidi-1.0.10-4.fc34.x86_64 gdk-pixbuf2-2.42.2-2.fc34.x86_64 graphite2-1.3.14-7.fc34.x86_64 gvfs-client-1.47.91-1.fc34.x86_64 harfbuzz-2.7.4-3.fc34.x86_64 ibus-gtk2-1.5.24-1.fc34.x86_64 ibus-libs-1.5.24-1.fc34.x86_64 imlib2-1.6.1-3.fc34.x86_64 libICE-1.0.10-6.fc34.x86_64 libSM-1.2.3-8.fc34.x86_64 libXau-1.0.9-6.fc34.x86_64 libXcomposite-0.4.5-5.fc34.x86_64 libXcursor-1.2.0-5.fc34.x86_64 libXdamage-1.1.5-5.fc34.x86_64 libXext-1.3.4-6.fc34.x86_64 libXfixes-5.0.3-14.fc34.x86_64 libXft-2.3.3-6.fc34.x86_64 libXi-1.7.10-6.fc34.x86_64 libXinerama-1.1.4-8.fc34.x86_64 libXrandr-1.5.2-6.fc34.x86_64 libXrender-0.9.10-14.fc34.x86_64 libblkid-2.36.2-1.fc34.x86_64 libbrotli-1.0.9-4.fc34.x86_64 libcap-2.48-2.fc34.x86_64 libdatrie-0.2.13-1.fc34.x86_64 libffi-3.1-28.fc34.x86_64 libgcc-11.0.0-0.20.fc34.x86_64 libgcrypt-1.9.2-1.fc34.x86_64 libgpg-error-1.41-2.fc34.x86_64 libmount-2.36.2-1.fc34.x86_64 libpng-1.6.37-8.fc34.x86_64 libselinux-3.2-1.fc34.x86_64 libthai-0.1.28-6.fc34.x86_64 libuuid-2.36.2-1.fc34.x86_64 libxcb-1.13.1-7.fc34.x86_64 libxml2-2.9.10-10.fc34.x86_64 libzstd-1.4.9-1.fc34.x86_64 lxappearance-obconf-0.2.3-11.fc34.x86_64 lz4-libs-1.9.3-2.fc34.x86_64 openbox-libs-3.6.1-17.fc34.x86_64 openssl-libs-1.1.1j-1.fc34.x86_64 p11-kit-0.23.22-3.fc34.x86_64 pcre-8.44-3.fc34.1.x86_64 pixman-0.40.0-3.fc34.x86_64 sssd-client-2.4.2-2.fc34.x86_64 systemd-libs-248~rc4-1.fc34.x86_64 xz-libs-5.2.5-5.fc34.x86_64 zlib-1.2.11-24.fc34.x86_64
(gdb) bt
#0  0x000055555555e904 in on_remove_theme_clicked (btn=0x555555750e40, user_data=<optimized out>)
    at /home/tasaka1/rpmbuild/fedora-specific/LXDE/lxappearance/rawhide/lxappearance-0.6.3/lxappearance/src/icon-theme.c:174
#4  0x00007ffff77f4993 in <emit signal ??? on instance ???> (instance=instance@entry=0x555555750e40, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3553
    #1  0x00007ffff77d6c2f in g_closure_invoke (closure=0x5555558112c0, return_value=0x0, n_param_values=1, param_values=0x7fffffffcfe0, invocation_hint=0x7fffffffcf60)
    at ../gobject/gclosure.c:810
    #2  0x00007ffff77f2eb6 in signal_emit_unlocked_R
    (node=node@entry=0x555555643c50, detail=detail@entry=0, instance=instance@entry=0x555555750e40, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffffffcfe0) at ../gobject/gsignal.c:3741
    #3  0x00007ffff77f477a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffffffd190)
    at ../gobject/gsignal.c:3497
#5  0x00007ffff7b83272 in IA__gtk_button_clicked (button=button@entry=0x555555750e40) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkbutton.c:1115
#6  0x00007ffff7b832e6 in gtk_real_button_released (button=0x555555750e40) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkbutton.c:1712
#7  gtk_real_button_released (button=0x555555750e40) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkbutton.c:1702
#11 0x00007ffff77f4993 in <emit signal ??? on instance ???> (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3553
    #8  0x00007ffff77d6c2f in g_closure_invoke (closure=0x5555556437f0, return_value=0x0, n_param_values=1, param_values=0x7fffffffd420, invocation_hint=0x7fffffffd3a0)
    at ../gobject/gclosure.c:810
    #9  0x00007ffff77f2b15 in signal_emit_unlocked_R
    (node=node@entry=0x555555643820, detail=detail@entry=0, instance=instance@entry=0x555555750e40, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffffffd420) at ../gobject/gsignal.c:3671
    #10 0x00007ffff77f477a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffffffd5d0)
    at ../gobject/gsignal.c:3497
#12 0x00007ffff7b83eb2 in gtk_button_released (button=<optimized out>) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkbutton.c:1107
#13 0x00007ffff7b83fa3 in gtk_button_button_release (event=<optimized out>, widget=0x555555750e40) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkbutton.c:1604
#14 gtk_button_button_release (widget=widget@entry=0x555555750e40, event=<optimized out>) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkbutton.c:1596
#19 0x00007ffff77f4993 in <emit signal ??? on instance ???> (instance=instance@entry=0x555555750e40, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3553
    #15 0x00007ffff7c44449 in _gtk_marshal_BOOLEAN__BOXED
    (closure=0x5555555e8b00, return_value=0x7fffffffd840, n_param_values=<optimized out>, param_values=0x7fffffffd8a0, invocation_hint=<optimized out>, marshal_data=<optimized out>)
    at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkmarshalers.c:84
    #16 0x00007ffff77d6c2f in g_closure_invoke (closure=0x5555555e8b00, return_value=0x7fffffffd840, n_param_values=2, param_values=0x7fffffffd8a0, invocation_hint=0x7fffffffd820)
    at ../gobject/gclosure.c:810
    #17 0x00007ffff77f28a4 in signal_emit_unlocked_R
    (node=<optimized out>, detail=detail@entry=0, instance=instance@entry=0x555555750e40, emission_return=emission_return@entry=0x7fffffffd9c0, instance_and_params=instance_and_params@entry=0x7fffffffd8a0) at ../gobject/gsignal.c:3780
    #18 0x00007ffff77f42ee in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffffffda70)
    at ../gobject/gsignal.c:3507
#20 0x00007ffff7d87144 in gtk_widget_event_internal (widget=0x555555750e40, event=0x555555d1f710) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkwidget.c:5017
#21 0x00007ffff7c46fc4 in IA__gtk_propagate_event (widget=0x555555750e40, event=0x555555d1f710) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkmain.c:2503
#22 0x00007ffff7c48c93 in IA__gtk_main_do_event (event=0x555555d1f710) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkmain.c:1698
#23 IA__gtk_main_do_event (event=<optimized out>) at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkmain.c:1503
#24 0x00007ffff7a89673 in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at x11/gdkevents-x11.c:2425
#25 0x00007ffff76de377 in g_main_dispatch (context=0x5555555b6780) at ../glib/gmain.c:3337
#26 g_main_context_dispatch (context=0x5555555b6780) at ../glib/gmain.c:4055
#27 0x00007ffff77322c8 in g_main_context_iterate.constprop.0 (context=0x5555555b6780, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4131
#28 0x00007ffff76dd943 in g_main_loop_run (loop=0x55555581dea0) at ../glib/gmain.c:4329
--Type <RET> for more, q to quit, c to continue without paging--
#29 0x00007ffff7c42142 in IA__gtk_main () at /usr/src/debug/gtk2-2.24.33-4.fc34.x86_64/gtk/gtkmain.c:1270
#30 0x000055555555ac20 in main (argc=<optimized out>, argv=<optimized out>)
    at /home/tasaka1/rpmbuild/fedora-specific/LXDE/lxappearance/rawhide/lxappearance-0.6.3/lxappearance/src/lxappearance.c:702

As written on: https://developer.gnome.org/glib/stable/glib-Key-value-file-parser.html#g-key-file-load-from-file an empty GKeyFile object must be passed to g_key_file_load_from_file .

======================================================== Again, like https://github.com/lxde/lxsession/pull/27 , on Fedora 34 (using glib2-2.68.0-1.fc34.x86_64), lxappearance immediately segfaults like:

[tasaka1@localhost x86_64]$ gdb --args lxappearance 
GNU gdb (GDB) Fedora 10.1-10.fc34

(gdb) r
Starting program: /usr/bin/lxappearance 

Thread 1 "lxappearance" received signal SIGSEGV, Segmentation fault.
g_key_file_locale_is_interesting (locale=0x55555584b650 "af", key_file=0x5555558034f0) at ../glib/gkeyfile.c:1241
1241	  for (i = 0; key_file->locales[i] != NULL; i++)
Missing separate debuginfos, use: dnf debuginfo-install adwaita-gtk2-theme-3.28-12.fc34.x86_64 atk-2.36.0-3.fc34.x86_64 bzip2-libs-1.0.8-6.fc34.x86_64 cairo-1.17.4-3.fc34.x86_64 fontconfig-2.13.93-5.fc34.x86_64 freetype-2.10.4-3.fc34.x86_64 fribidi-1.0.10-4.fc34.x86_64 gdk-pixbuf2-2.42.2-2.fc34.x86_64 graphite2-1.3.14-7.fc34.x86_64 harfbuzz-2.7.4-3.fc34.x86_64 libXau-1.0.9-6.fc34.x86_64 libXcomposite-0.4.5-5.fc34.x86_64 libXcursor-1.2.0-5.fc34.x86_64 libXdamage-1.1.5-5.fc34.x86_64 libXext-1.3.4-6.fc34.x86_64 libXfixes-5.0.3-14.fc34.x86_64 libXi-1.7.10-6.fc34.x86_64 libXinerama-1.1.4-8.fc34.x86_64 libXrandr-1.5.2-6.fc34.x86_64 libXrender-0.9.10-14.fc34.x86_64 libblkid-2.36.2-1.fc34.x86_64 libbrotli-1.0.9-4.fc34.x86_64 libdatrie-0.2.13-1.fc34.x86_64 libffi-3.1-28.fc34.x86_64 libmount-2.36.2-1.fc34.x86_64 libpng-1.6.37-8.fc34.x86_64 libselinux-3.2-1.fc34.x86_64 libthai-0.1.28-6.fc34.x86_64 libxcb-1.13.1-7.fc34.x86_64 libxml2-2.9.10-10.fc34.x86_64 pcre-8.44-3.fc34.1.x86_64 pixman-0.40.0-3.fc34.x86_64 xz-libs-5.2.5-5.fc34.x86_64 zlib-1.2.11-24.fc34.x86_64
(gdb) bt
#0  g_key_file_locale_is_interesting (locale=0x55555584b650 "af", key_file=0x5555558034f0) at ../glib/gkeyfile.c:1241
#1  g_key_file_parse_key_value_pair (error=0x7fffffffcc40, length=<optimized out>, line=<optimized out>, key_file=0x5555558034f0) at ../glib/gkeyfile.c:1427
#2  g_key_file_parse_line (error=0x7fffffffcc38, length=<optimized out>, line=<optimized out>, key_file=0x5555558034f0) at ../glib/gkeyfile.c:1273
#3  g_key_file_flush_parse_buffer (key_file=key_file@entry=0x5555558034f0, error=error@entry=0x7fffffffcca0) at ../glib/gkeyfile.c:1542
#4  0x00007ffff76d6cdc in g_key_file_parse_data
    (key_file=0x5555558034f0, data=0x7fffffffcda0 "[Icon Theme]\nName=Mist\nName[af]=Mis\nName[ar]=غشى\nName[as]=কুঁৱলী\nName[ast]=Ñeblina\nName[az]=Çən\nName[be]=Туман\nName[be@latin]=Mist\nName[bg]=Мъгла\nName[bn]=কুয়া", <incomplete sequence \340\246>..., length=4096, error=0x7fffffffcd08) at ../glib/gkeyfile.c:1496
#5  0x00007ffff76d6f59 in g_key_file_load_from_fd (key_file=key_file@entry=0x5555558034f0, fd=fd@entry=9, flags=flags@entry=G_KEY_FILE_NONE, error=error@entry=0x7fffffffddf0)
    at ../glib/gkeyfile.c:857
#6  0x00007ffff76d7054 in g_key_file_load_from_file (key_file=0x5555558034f0, file=<optimized out>, flags=G_KEY_FILE_NONE, error=0x0) at ../glib/gkeyfile.c:924
#7  0x000055555555d55e in load_icon_themes_from_dir (base_dir=0x55555566d330 "/usr/share/icons", theme_dir=0x55555566d330 "/usr/share/icons", kf=0x5555558034f0)
    at /usr/src/debug/lxappearance-0.6.3-12.100.D20200807gitd132fdd8.fc35.x86_64/lxappearance/src/icon-theme.c:84
#8  0x000055555555d892 in load_icon_themes () at /usr/src/debug/lxappearance-0.6.3-12.100.D20200807gitd132fdd8.fc35.x86_64/lxappearance/src/icon-theme.c:125
#9  icon_theme_init (b=<optimized out>) at /usr/src/debug/lxappearance-0.6.3-12.100.D20200807gitd132fdd8.fc35.x86_64/lxappearance/src/icon-theme.c:247
#10 0x000055555555abaf in main (argc=<optimized out>, argv=<optimized out>)
    at /usr/src/debug/lxappearance-0.6.3-12.100.D20200807gitd132fdd8.fc35.x86_64/lxappearance/src/lxappearance.c:688

2 other things I said on IRC that are solved in my patch are:

• GtkFontChooser (and its gtk_font_chooser_get_font) is introduced in GTK 3.2, so you could check for GTK 3.2 instead of GTK 3.22, where gtk_font_button_set_font_name got deprecated
• gtk_font_chooser_get_font is transfer full, so g_strdup isn't needed

<details><summary>Patch I suggested</summary>

diff --git a/src/appearance.c b/src/appearance.c
index a9b139d..0434232 100644
--- a/src/appearance.c
+++ b/src/appearance.c
@@ -254,7 +254,11 @@ static RrFont *read_font(GtkFontButton *w, const gchar *place)
     }
 
     fontstring = g_strdup_printf("%s %s %s %s", name, weight, slant, size);
+#if GTK_CHECK_VERSION(3, 2, 0)
+    gtk_font_chooser_set_font(GTK_FONT_CHOOSER(w), fontstring);
+#else
     gtk_font_button_set_font_name(w, fontstring);
+#endif
 
     if (!g_ascii_strcasecmp(weight, "Bold")) rr_weight = RR_FONTWEIGHT_BOLD;
     if (!g_ascii_strcasecmp(slant, "Italic")) rr_slant = RR_FONTSLANT_ITALIC;
@@ -285,7 +289,11 @@ static RrFont *write_font(GtkFontButton *w, const gchar *place)
 
     if (mapping) return NULL;
 
+#if GTK_CHECK_VERSION(3, 2, 0)
+    font = gtk_font_chooser_get_font(GTK_FONT_CHOOSER(w));
+#else
     font = g_strdup(gtk_font_button_get_font_name(w));
+#endif
     while ((c = strrchr(font, ' '))) {
         if (!bold && !italic && !size && atoi(c+1))
             size = c+1;
diff --git a/src/theme.c b/src/theme.c
index 4d7b988..86d447b 100644
--- a/src/theme.c
+++ b/src/theme.c
@@ -112,8 +112,13 @@ void on_install_theme_clicked(GtkButton *w, gpointer data)
     d = gtk_file_chooser_dialog_new(_("Choose an Openbox theme"),
                                     GTK_WINDOW(mainwin),
                                     GTK_FILE_CHOOSER_ACTION_OPEN,
+#if GTK_CHECK_VERSION(3, 10, 0)
+                                    _("_OK"), GTK_RESPONSE_OK,
+                                    _("_Cancel"), GTK_RESPONSE_NONE,
+#else
                                     GTK_STOCK_OK, GTK_RESPONSE_OK,
                                     GTK_STOCK_CANCEL, GTK_RESPONSE_NONE,
+#endif
                                     NULL);
 
     gtk_file_chooser_set_show_hidden(GTK_FILE_CHOOSER(d), FALSE);
@@ -144,8 +149,13 @@ void on_theme_archive_clicked(GtkButton *w, gpointer data)
     d = gtk_file_chooser_dialog_new(_("Choose an Openbox theme"),
                                     GTK_WINDOW(mainwin),
                                     GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER,
+#if GTK_CHECK_VERSION(3, 10, 0)
+                                    _("_OK"), GTK_RESPONSE_OK,
+                                    _("_Cancel"), GTK_RESPONSE_NONE,
+#else
                                     GTK_STOCK_OK, GTK_RESPONSE_OK,
                                     GTK_STOCK_CANCEL, GTK_RESPONSE_NONE,
+#endif
                                     NULL);
 
     gtk_file_chooser_set_show_hidden(GTK_FILE_CHOOSER(d), TRUE);

</details>

This causes it to not crash on e.g. Wayland

@bill-auger: There is no need to change GtkFontButton to GtkWidget, because it's still a GtkFontButton in GTK 3. It's just that you shouldn't use the the get/set name functions on the GtkFontButton itself as of GTK 3.22, but on GtkFontChooser, which is an interface implemented by GtkFontButton.

As for using e.g. "_OK" instead of GTK_STOCK_OK, that would cause you to not have the appropriate icon with it and you'll have to handle translating those yourself, but you didn't call gettext's _().

@LStranger: This should be good to go now.

I prefer to use simple range, anyways I did it everywhere before so it's too late for such details now. :D

Nitpick: I think you want 2012-2014, 2021 instead, because 2012-2021 would mean you've also touched the code in 2015, 2016, 2017, 2018, 2019, and 2020.

It seems to be broken now: when I add a monitor, it doesn't come up there, while when I remove a monitor, it gets stuck in a loop in renumber_monitors.

It should not enumerate them but remember plugs instead and associate config with them. When monitor is getting plugged off then plugged on, it will get remembered config back.

This change is made instead of #3 to handle it more correctly. Some fixes from #3 should be pulled separately though.

that is my system information from the KDE GUI as i use the Kubuntu variation iam using an KDE desktop - i think this is called Plasma (but iam not 100% sure on the what is what / naming...)

Operating System: Kubuntu 20.04
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
Kernel Version: 5.4.0-67-generic
OS Type: 64-bit
Processors: 16 × Intel® Core™ i9-9980HK CPU @ 2.40GHz
Memory: 31,2 GiB of RAM

i just installed freewheeling from the git sources - i run

autoreconf -ivf
./configure
make
sudo make install

that was all fine -

but on start it crashes:

FreeWheeling 0.6.6
May we return to the circle.
MEMMGR: Stacksize: 131072.
CORE: Register ringbuffer writer thread: 140706348095232
CORE: RingBuffer 0x55f2caba4e60: Update reader and writer threads to 2
MEM: Memory manager thread (p0)
CONFIG: Starting with 1024 triggers.
CONFIG: Starting with 100 max snapshots.
CONFIG: Library path: 'fw-lib'
CONFIG: Config sets 4 MIDI outputs.
CONFIG: Set 1 MIDI sync outputs: 1 
CONFIG: Starting with 4 external audio input(s)
        and 1 internal audio input(s)--
CONFIG: Input #1 is mono
CONFIG: Input #2 is mono
CONFIG: Input #3 is stereo
CONFIG: Input #4 is stereo
CONFIG: Input #1 is not monitored
CONFIG: Input #2 is not monitored
CONFIG: Input #3 is not monitored
CONFIG: Input #4 is not monitored
CONFIG: Input #1 is not streamed
CONFIG: Input #2 is streamed
CONFIG: Input #3 is streamed
CONFIG: Input #4 is not streamed
CONFIG: Disable final stream
CONFIG: Enable loop stream
CONFIG: No maximum play volume set! Watch your levels!
CONFIG: Maximum limiter gain set to 100.00%.
CONFIG: Limiter threshhold set to 75.00%.
CONFIG: Limiter release rate set to 0.00%.
CONFIG: Fader max dB set to 6.00.
CONFIG: Loop out format is: ogg
CONFIG: Stream out format is: ogg
CONFIG: OGG Quality: 0.500000
CONFIG: FluidSynth running in stereo
CONFIG: FreeWheeling is running in stereo.
        * Please be aware, this significantly increases memory usage. *
CONFIG: Starting with (640,480) resolution.
CONFIG: Video delay: 40 ms
CONFIG: New onscreen font: main: truetype/ttf-bitstream-vera/VeraBd.ttf (20 pt)
CONFIG: New onscreen font: help: truetype/ttf-bitstream-vera/Vera.ttf (16 pt)
CONFIG: New onscreen font: small: truetype/ttf-bitstream-vera/VeraBd.ttf (14 pt)
CONFIG: New onscreen font: tiny: truetype/ttf-bitstream-vera/Vera.ttf (10 pt)
INIT: Load interface 'coreinterface.xml' [first pass]

...

CONFIG: # of interfaces: 4 switchable / 7 non-switchable
Start event manager.
EVENT: Stacksize: 131072.
CORE: Register ringbuffer writer thread: 140706284033792
CORE: RingBuffer 0x55f2caba4e60: Update reader and writer threads to 3
VIDEO: Starting handler..
VIDEO: Stacksize: 131072.
VIDEO: (start) pthread_create failed, exitingMAIN: ERROR: Can't start video handler!
Error starting FreeWheeling!

is it expected that the master/main github branch does not start on an kubuntu 20.04? (i have a new - one year old - laptop - just if this makes any differences)

the packaged version is currently not available for this os-version..

This fixes that when you enable another monitor while PCManFM's desktop manager is running, it will properly load the desktop for that monitor you just enabled.

These patches made by @mtasaka come from https://src.fedoraproject.org/rpms/pcmanfm/tree/master