diff --git a/README.md b/README.md
index efea1e7..f602562 100644
--- a/README.md
+++ b/README.md
@@ -88,8 +88,8 @@ Who is who in **bin** directory:
 - `h+ SYMBOL` draw a pretty heading
 - `hg+ MESSAGE` hg: commit and push to master
 - `lower` convert selection to lowercase
+- `lstrip` remove leading whitespace
 - `search` search with The Silver Searcher
-- `s-` remove leading whitespace
 - `s2t N_SPACES` spaces to tabs (default: 4 spaces to 1 tab)
 - `t2s N_SPACES` tabs to spaces (default: 1 tab to 4 spaces)
 - `t+` add tab
diff --git a/bin/lstrip b/bin/lstrip
new file mode 100755
index 0000000..cfc54fd
--- /dev/null
+++ b/bin/lstrip
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+# macOS (BSD) flavor of sed
+sed -E 's/^[[:space:]]+//'
diff --git a/bin/s- b/bin/s-
deleted file mode 100755
index 992aa64..0000000
--- a/bin/s-
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/usr/bin/env perl
-
-while (<>) {
-	if ($_ =~ m/^\s+$/) {
-		print "\n";
-	} else {
-		$_ =~ s/^\s+//;
-		print $_;
-	}
-}