In /usr/bin/quilt line 20:
: ${QUILT_DIR=/usr/share/quilt}
  ^---------------------------^ SC2223: This default assignment may cause DoS due to globbing. Quote it.


In /usr/bin/quilt line 26:
		[ -e $QUILTRC ] && break
                     ^------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
		[ -e "$QUILTRC" ] && break


In /usr/bin/quilt line 69:
	for command in $QUILT_DIR/*
                       ^--------^ SC2231: Quote expansions in this for loop glob to prevent wordsplitting, e.g. "$dir"/*.txt .


In /usr/bin/quilt line 71:
		if [ -f "$command" -a -x "$command" ]
                                   ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.


In /usr/bin/quilt line 73:
			echo ${command##$QUILT_DIR/}
                             ^---------------------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
			echo "${command##$QUILT_DIR/}"


In /usr/bin/quilt line 78:
if [ $# -eq 1 -a "$1" == "--version" ]
              ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.


In /usr/bin/quilt line 121:
if ! [ -f "$QUILT_DIR/$command" -a -x "$QUILT_DIR/$command" ]
                                ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.

For more information:
  https://www.shellcheck.net/wiki/SC2166 -- Prefer [ p ] && [ q ] as [ p -a q...
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...
  https://www.shellcheck.net/wiki/SC2223 -- This default assignment may cause...