feat(openssl): show only standard commands

We used to also complete digest and encryption algorithms as top level
commands, but they can all be used by the `dgst` and `enc` commands.

This also makes this work on the BSD sed version that comes with macos.
See #1324

fix(openssl): Make command extraction from help portable for BSD sed.

Author: yedayak

completions/openssl

@@ -46,7 +46,8 @@ _comp_cmd_openssl()
 
     if ((cword == 1)); then
         local commands
-        commands="$("$1" help 2>&1 | command sed -e '/commands\|help:/d')"
+        # We only want the standard commands, so we delete everything starting after and including "Message Digest commands"
+        commands="$("$1" help 2>&1 | command sed -e '/Standard commands/d;/help:/d' -e '/Message Digest commands/,$d')"
         _comp_compgen -- -W "$commands"
     else
         command=${words[1]}

test/t/test_openssl.py

@@ -5,9 +5,7 @@ class TestOpenssl:
     @pytest.mark.complete("openssl ", require_cmd=True)
     def test_1(self, completion):
         assert completion
-        assert all(
-            x in completion for x in "md5 x509 aes-128-cbc dgst pkey".split()
-        )
+        assert all(x in completion for x in "x509 dgst enc pkey".split())
 
     @pytest.mark.complete("openssl pkey -cipher ", require_cmd=True)
     def test_2(self, completion):