From e390b228c8be53ffa6b02bd06cad2189e5105024 Mon Sep 17 00:00:00 2001
From: Kevin Schoedel <kps@datatravelandexperiments.com>
Date: Thu, 11 May 2023 12:23:34 -0400
Subject: [PATCH 1/2] Support ksh versions
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Korn shell had two major versions: ’88 and ’93. Some systems have ksh
installed under the name `ksh93`. A few systems (maybe only Solaris
now) also have a `ksh88`. A few others use the `pdksh` (roughly ’88)
or `mksh` (roughly ’93) implementations, originated before ksh was
open source.

As far as the (very minor) use in rbenv is concerned, these are all
equivalent. This change accepts all of the above.

Tested with `ksh93`, `pdksh`, and `mksh`.
---
 libexec/rbenv-init | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libexec/rbenv-init b/libexec/rbenv-init
index ff79b3db..e4b487e7 100755
--- a/libexec/rbenv-init
+++ b/libexec/rbenv-init
@@ -62,7 +62,7 @@ if [ -z "$print" ]; then
   zsh )
     profile='~/.zshrc'
     ;;
-  ksh )
+  ksh | ksh93 | ksh88 | pdksh | mksh )
     profile='~/.profile'
     ;;
   fish )
@@ -144,7 +144,7 @@ function rbenv
 end
 EOS
   ;;
-ksh )
+ksh | ksh93 | ksh88 | pdksh | mksh )
   cat <<EOS
 function rbenv {
   typeset command

From cfe1c37d2691773b62c25232e52272480ac67f49 Mon Sep 17 00:00:00 2001
From: Kevin Schoedel <kps@datatravelandexperiments.com>
Date: Sat, 13 May 2023 12:56:22 -0400
Subject: [PATCH 2/2] Add explanatory comment, and remove obsolete versions

---
 libexec/rbenv-init | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/libexec/rbenv-init b/libexec/rbenv-init
index e4b487e7..7b944d21 100755
--- a/libexec/rbenv-init
+++ b/libexec/rbenv-init
@@ -62,7 +62,12 @@ if [ -z "$print" ]; then
   zsh )
     profile='~/.zshrc'
     ;;
-  ksh | ksh93 | ksh88 | pdksh | mksh )
+  ksh | ksh93 | mksh )
+    # There are two implementations of Korn shell: AT&T (ksh93) and Mir (mksh).
+    # Systems may have them installed under those names, or as ksh, so those
+    # are recognized here. The obsolete ksh88 (subsumed by ksh93) and pdksh
+    # (subsumed by mksh) are not included, since they are unlikely to still
+    # be in use as interactive shells anywhere.
     profile='~/.profile'
     ;;
   fish )
@@ -144,7 +149,7 @@ function rbenv
 end
 EOS
   ;;
-ksh | ksh93 | ksh88 | pdksh | mksh )
+ksh | ksh93 | mksh )
   cat <<EOS
 function rbenv {
   typeset command