diff --git a/dotdrop/utils.py b/dotdrop/utils.py
index 09340bf..a601992 100644
--- a/dotdrop/utils.py
+++ b/dotdrop/utils.py
@@ -220,6 +220,7 @@ def must_ignore(paths, ignores, debug=False):
             if fnmatch.fnmatch(p, ni):
                 if debug:
                     LOG.dbg('negative ignore \"{}\" match: {}'.format(ni, p))
+                # TODO: catch error and report it
                 ignore_matches.remove(p)
         if ignore_matches:
             return True
diff --git a/tests-ng/compare-negative-ignore.sh b/tests-ng/compare-negative-ignore.sh
new file mode 100755
index 0000000..a25f115
--- /dev/null
+++ b/tests-ng/compare-negative-ignore.sh
@@ -0,0 +1,132 @@
+#!/usr/bin/env bash
+# author: jtt9340 (https://github.com/jtt9340)
+#
+# test install negative ignore absolute/relative
+# returns 1 in case of error
+#
+
+# exit on first error
+#set -e
+
+# all this crap to get current path
+if [ $(uname) = Darwin ]; then
+  # Unfortunately, readlink works differently on macOS than it does on GNU/Linux
+  # (the -f option behaves differently) and the realpath command does not exist.
+  # Workarounds I find on the Internet suggest just using Homebrew to install coreutils
+  # so you can get the GNU coreutils on your Mac. But, I don't want this script to
+  # assume (a) users have Homebrew installed and (b) if they have Homebrew installed, that
+  # they then installed the GNU coreutils.
+  readlink() {
+    TARGET_FILE=$1
+
+    cd `dirname $TARGET_FILE`
+    TARGET_FILE=`basename $TARGET_FILE`
+
+    # Iterate down a (possible) chain of symlinks
+    while [ -L "$TARGET_FILE" ]; do
+      TARGET_FILE=`readlink $TARGET_FILE`
+      cd `dirname $TARGET_FILE`
+      TARGET_FILE=`basename $TARGET_FILE`
+    done
+
+    # Compute the canonicalized name by finding the physical path
+    # for the directory we're in and appending the target file.
+    PHYS_DIR=`pwd -P`
+    RESULT=$PHYS_DIR/$TARGET_FILE
+    echo $RESULT
+  }
+  rl="readlink"
+else
+  rl="readlink -f"
+  if ! ${rl} "${0}" >/dev/null 2>&1; then
+    rl="realpath"
+
+    if ! hash ${rl}; then
+      echo "\"${rl}\" not found !" && exit 1
+    fi
+  fi
+fi
+cur=$(dirname "$(${rl} "${0}")")
+
+# dotdrop path can be pass as argument
+ddpath="${cur}/../"
+[ "${1}" != "" ] && ddpath="${1}"
+[ ! -d ${ddpath} ] && echo "ddpath \"${ddpath}\" is not a directory" && exit 1
+
+export PYTHONPATH="${ddpath}:${PYTHONPATH}"
+bin="python3 -m dotdrop.dotdrop"
+
+echo "dotdrop path: ${ddpath}"
+echo "pythonpath: ${PYTHONPATH}"
+
+# get the helpers
+source ${cur}/helpers
+
+echo -e "$(tput setaf 6)==> RUNNING $(basename $BASH_SOURCE) <==$(tput sgr0)"
+
+################################################################
+# this is the test
+################################################################
+
+# dotdrop directory
+basedir=`mktemp -d --suffix='-dotdrop-tests' 2>/dev/null || mktemp -d`
+echo "[+] dotdrop dir: ${basedir}"
+echo "[+] dotpath dir: ${basedir}/dotfiles"
+
+# the dotfile to be imported
+tmpd=`mktemp -d --suffix='-dotdrop-tests' 2>/dev/null || mktemp -d`
+
+# some files
+mkdir -p ${tmpd}/program/ignore_me
+echo "some data" > ${tmpd}/program/a
+echo "some data" > ${tmpd}/program/ignore_me/b
+echo "some data" > ${tmpd}/program/ignore_me/c
+
+# create the config file
+cfg="${basedir}/config.yaml"
+create_conf ${cfg} # sets token
+
+# import
+echo "[+] import"
+cd ${ddpath} | ${bin} import -c ${cfg} ${tmpd}/program
+
+# make some changes to generate a diff
+echo "some other data" > ${tmpd}/program/a
+echo "some other data" > ${tmpd}/program/ignore_me/b
+echo "some other data" > ${tmpd}/program/ignore_me/c
+
+echo "[+] comparing normal - 3 diffs"
+set +e
+cd ${ddpath} | ${bin} compare -c ${cfg} --verbose
+[ "$?" = 0 ] && exit 1 # We don't want an exit status of 0
+set -e
+
+# expects two diffs
+patt0="*/ignore_me/*"
+patt1="!*/ignore_me/c"
+echo "[+] comparing with ignore (patterns: ${patt0} and ${patt1}) - 2 diffs"
+set +e
+cd ${ddpath} | ${bin} compare -c ${cfg} --verbose --ignore=${patt0} --ignore=${patt1}
+[ "$?" = "0" ] && exit 1
+set -e
+
+# Adding ignore in dotfile
+cfg2="${basedir}/config2.yaml"
+sed '/d_program:/a\
+\ \ \ \ cmpignore:\
+\ \ \ \ - "*/ignore_me/*"\
+\ \ \ \ - "!*/ignore_me/c"
+' ${cfg} > ${cfg2}
+
+# still expects two diffs
+echo "[+] comparing with ignore in dotfile - 2 diffs"
+set +e
+cd ${ddpath} | ${bin} compare -c ${cfg2} --verbose
+[ "$?" = "0" ] && exit 1
+set -e
+
+# clean
+rm -rf ${basedir} ${tmpd}
+
+echo "OK"
+exit 0
\ No newline at end of file