In /usr/bin/dpatch2quilt line 20:
        quilt import -P $p.patch debian/patches/$p.dpatch
                        ^-- SC2086: Double quote to prevent globbing and word splitting.
                                                ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
        quilt import -P "$p".patch debian/patches/"$p".dpatch


In /usr/bin/dpatch2quilt line 21:
        AUTHOR=$(dpatch cat --author-only $p.dpatch)
                                          ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
        AUTHOR=$(dpatch cat --author-only "$p".dpatch)


In /usr/bin/dpatch2quilt line 22:
        DESC=$(dpatch cat --desc-only $p.dpatch)
                                      ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
        DESC=$(dpatch cat --desc-only "$p".dpatch)


In /usr/bin/dpatch2quilt line 23:
        echo "Author: $AUTHOR" | quilt header -r $p.patch
                                                 ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
        echo "Author: $AUTHOR" | quilt header -r "$p".patch


In /usr/bin/dpatch2quilt line 24:
        echo "Description: $DESC" | quilt header -a $p.patch
                                                    ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
        echo "Description: $DESC" | quilt header -a "$p".patch


In /usr/bin/dpatch2quilt line 33:
COUNT_D=$(ls -1 debian/patches/*.dpatch | wc -l)
          ^---------------------------^ SC2012: Use find instead of ls to better handle non-alphanumeric filenames.


In /usr/bin/dpatch2quilt line 34:
COUNT_Q=$(ls -1 debian/patches/*.patch | wc -l)
          ^--------------------------^ SC2012: Use find instead of ls to better handle non-alphanumeric filenames.


In /usr/bin/dpatch2quilt line 41:
sed -i -e 's;patch-stamp;$(QUILT_STAMPFN);' debian/rules
          ^-- SC2016: Expressions don't expand in single quotes, use double quotes for that.

For more information:
  https://www.shellcheck.net/wiki/SC2012 -- Use find instead of ls to better ...
  https://www.shellcheck.net/wiki/SC2016 -- Expressions don't expand in singl...
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...