diff --git a/regress/format-strings.sh b/regress/format-strings.sh
index da3fc0edb..bae66ab00 100644
--- a/regress/format-strings.sh
+++ b/regress/format-strings.sh
@@ -234,25 +234,4 @@ test_format "#{l:#{#}}}" "#{#}}"
 #test_format "#{l:#{}" ""
 #test_format "#{l:#{#}}" ""
 
-# Fuzzy (subsequence) match operator m/z
-test_format "#{m/z:wtr,window-tree}" "1"	# subsequence in order
-test_format "#{m/z:tree,window-tree}" "1"	# contiguous is a subsequence
-test_format "#{m/z:xyz,window-tree}" "0"	# not a subsequence
-test_format "#{m/z:wrt,window-tree}" "0"	# right letters, wrong order
-test_format "#{m/z:,window-tree}" "1"		# empty pattern matches
-test_format "#{m/z:window-tree,wtr}" "0"	# pattern longer than text
-test_format "#{m/z:WTR,window-tree}" "0"	# case-sensitive by default
-test_format "#{m/zi:WTR,window-tree}" "1"	# /zi is case-insensitive
-test_format "#{m/z:win tree,window-tree}" "1"	# space-separated tokens are ANDed
-test_format "#{m/z:wn tr,window-tree}" "1"	# each token matched as subsequence
-test_format "#{m/z:win xyz,window-tree}" "0"	# all tokens must match
-test_format "#{m/z: tree ,window-tree}" "1"	# leading/trailing spaces ignored
-test_format "#{m/z:wt   tr,window-tree}" "1"	# repeated spaces ignored
-
-# Space splits the pattern into tokens which must all match (AND)
-test_format "#{m/z:win tree,window-tree}" "1"	# both tokens present
-test_format "#{m/z:tree win,window-tree}" "1"	# token order independent
-test_format "#{m/z:win xyz,window-tree}" "0"	# second token absent
-test_format "#{m/z:  ,window-tree}" "1"		# only spaces is empty pattern
-
 exit 0