In /usr/bin/debconf-updatepo line 23:
: ${PODEBCONF_LIB=/usr/share/intltool-debian}
  ^-- SC2223: This default assignment may cause DoS due to globbing. Quote it.


In /usr/bin/debconf-updatepo line 111:
cd "$podir"
^---------^ SC2164: Use 'cd ... || exit' or 'cd ... || return' in case cd fails.

Did you mean: 
cd "$podir" || exit


In /usr/bin/debconf-updatepo line 121:
			package_name="$source_package"
                        ^----------^ SC2034: package_name appears unused. Verify use (or export if used externally).


In /usr/bin/debconf-updatepo line 127:
                XGETTEXT_ARGS="--msgid-bugs-address=\"$msgid_bugs_address\" --package-name=\"$source_package\""
                               ^---------------------^ SC2089: Quotes/backslashes will be treated literally. Rewrite using set/"$@" or functions.


In /usr/bin/debconf-updatepo line 128:
                export XGETTEXT_ARGS
                       ^-----------^ SC2090: Quotes/backslashes in this variable will not be respected.


In /usr/bin/debconf-updatepo line 137:
                [ -n "$verbose" ] && printf "Merging $lang with $domain.pot... " 1>&2
                                            ^-- SC2059: Don't use variables in the printf format string. Use printf '..%s..' "$foo".


In /usr/bin/debconf-updatepo line 138:
                msgmerge --backup=none --previous -q -U $lang $domain.pot
                                                        ^---^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
                msgmerge --backup=none --previous -q -U "$lang" $domain.pot


In /usr/bin/debconf-updatepo line 139:
                [ -n "$verbose" ] && msgfmt -v -o /dev/null $lang
                                                            ^---^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
                [ -n "$verbose" ] && msgfmt -v -o /dev/null "$lang"

For more information:
  https://www.shellcheck.net/wiki/SC2034 -- package_name appears unused. Veri...
  https://www.shellcheck.net/wiki/SC2089 -- Quotes/backslashes will be treate...
  https://www.shellcheck.net/wiki/SC2090 -- Quotes/backslashes in this variab...