commit bash-20210217 snapshot

tests/case.right

@@ -14,6 +14,7 @@ no
 no
 no
 ok
+esac
 ok 1
 ok 2
 ok 3

tests/case.tests

@@ -62,6 +62,12 @@ case abc in (["$empty"]|[!a-z]*) echo yes ;; (*) echo no ;; esac
 
 case " " in ( [" "] ) echo ok;; ( * ) echo no;; esac
 
+# posix issue discovered after bash-5.1 was released
+case esac in (esac) echo esac;; esac
+case k in else|done|time|esac) for f in 1 2 3 ; do :; done esac
+
+
+
 # tests of quote removal and pattern matching
 ${THIS_SH} ./case1.sub
 ${THIS_SH} ./case2.sub

tests/comsub-posix5.sub

@@ -61,6 +61,8 @@
 : $(case in in esac)
 
 : $(case x in in|esac) foo;; esac)
+: $(case esac in (esac) echo esac;; esac)
+: $(case k in else|done|time|esac) for f in 1 2 3 ; do :; done esac)
 
 # this is an error
 ${THIS_SH} -c ': $(case x in esac|in) foo;; esac)' bash

tests/posix2.right

@@ -1,6 +1,4 @@
 Testing for POSIX.2 conformance
-./posix2.tests: eval: line 195: syntax error near unexpected token `esac'
-./posix2.tests: eval: line 195: `case esac in (esac) ;; *) echo "case esac test 3" ;; esac'
-./posix2.tests: eval: line 197: syntax error near unexpected token `)'
-./posix2.tests: eval: line 197: `case esac in esac) ;; *) echo "case esac test 4";; esac'
+./posix2.tests: eval: line 199: syntax error near unexpected token `)'
+./posix2.tests: eval: line 199: `case esac in esac) ;; *) echo "case esac test 4";; esac'
 All tests passed

tests/posix2.tests

@@ -190,11 +190,13 @@ case esac in (foo|esac) ;; *) testfail "case esac test 1" ;; esac
 newtest
 case esac in foo|esac) ;; *) testfail "case esac test 2" ;; esac
 
+# POSIX.2 grammar rule 4 problem through bash-5.1
+newtest
+eval 'case esac in (esac) ;; *) testfail "case esac test 3" ;; esac'
+
 # these are supposed to be syntax errors
 newtest
-eval 'case esac in (esac) ;; *) echo "case esac test 3" ;; esac'
-newtest
-eval 'case esac in esac) ;; *) echo "case esac test 4";; esac'
+eval 'case esac in esac) ;; *) echo "case esac test 4";; esac' && testfail 'case esac test 4'
 
 if [ $exitval = 0 ]; then
     echo "All tests passed"