gsu_gui: Add check for dialog executable.

Currently, programs which use gsu_gui exit silently with no indication about
what went wrong if dialog is not installed. This patch makes it print an error
message in this case.

diff --git a/misc/gsu/gui b/misc/gsu/gui
index 30c95a43d662e17067cc058f1ce0eb14b3f14fe7..5b108e1ad4521d74ec5a8b6a16c061484c8a0cef 100644 (file)
--- a/misc/gsu/gui
+++ b/misc/gsu/gui
@@ -201,6 +201,11 @@ gsu_gui()
        local tree="$1" subtree
 
        _gsu_setup
+       type -t dialog &> /dev/null
+       if (($? != 0)); then
+               gsu_msg "dialog executable not found"
+               exit 1
+       fi
        _get_root_nodes "$tree"
        subtree="$result"
        _browse "$gsu_name main menu" "$tree" "$subtree"