Add case-insensitive matching to sed, using the 'I' flag, similarly to GNU sed.

For example,
	sed /foo/Id
	sed s/foo/bar/Ig

Reviewed by:	dds
Approved by:	re (hrs)

3 files changed, 10 insertions, 0 deletions

diff --git a/tools/regression/usr.bin/sed/regress.icase1.out b/tools/regression/usr.bin/sed/regress.icase1.out
new file mode 100644
index 0000000..a610a0b
--- /dev/null
+++ b/tools/regression/usr.bin/sed/regress.icase1.out
@@ -0,0 +1,3 @@
+input
+data
+for validation
diff --git a/tools/regression/usr.bin/sed/regress.icase2.out b/tools/regression/usr.bin/sed/regress.icase2.out
new file mode 100644
index 0000000..b803373
--- /dev/null
+++ b/tools/regression/usr.bin/sed/regress.icase2.out
@@ -0,0 +1,4 @@
+input
+data
+for validation
+of Foo(1)
diff --git a/tools/regression/usr.bin/sed/regress.sh b/tools/regression/usr.bin/sed/regress.sh
index 520abd5..64518a6 100644
--- a/tools/regression/usr.bin/sed/regress.sh
+++ b/tools/regression/usr.bin/sed/regress.sh
@@ -63,6 +63,9 @@ REGRESSION_TEST_FREEFORM(`inplace3', `inplace_test 20,99d')
 REGRESSION_TEST_FREEFORM(`inplace4', `inplace_test "{;{;8,30d;};}"')
 REGRESSION_TEST_FREEFORM(`inplace5', `inplace_test "3x;6G"')
 
+REGRESSION_TEST(`icase1', `sed /SED/Id < regress.in')
+REGRESSION_TEST(`icase2', `sed s/SED/Foo/I < regress.in')
+
 REGRESSION_TEST(`hanoi', `echo ":abcd: : :" | sed -f hanoi.sed')
 REGRESSION_TEST(`math', `echo "4+7*3+2^7/3" | sed -f math.sed')