[gthumb: 2/2] Merge branch 'issue-229' into 'master'

[Paolo Bacchilega <paobac src gnome org>]

commit 706504531bba5d438a59d9219c73cb8fd999e448
Merge: 9a2dedeb d8636d0c
Author: Paolo Bacchilega <paolo bacchilega libero it>
Date:   Mon May 2 16:43:23 2022 +0000

    Merge branch 'issue-229' into 'master'
    
    drag&drop: allow alt action via keyboard modifiers
    
    See merge request GNOME/gthumb!36

 extensions/file_manager/callbacks.c |  9 +++++++--
 gthumb/gth-browser.c                |  6 +++++-
 gthumb/gtk-utils.c                  | 18 ++++++++++++++++++
 gthumb/gtk-utils.h                  |  1 +
 4 files changed, 31 insertions(+), 3 deletions(-)
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