From f4d9f1edb4eefacfaa0c9e56a972f64b3f4ee16e Mon Sep 17 00:00:00 2001
From: Oliver Ford <dev@ojford.com>
Date: Wed, 27 Jul 2022 19:22:26 +0100
Subject: [PATCH 1/5] Add test to reproduce #354

---
 test/test_use_minrequired.sh | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/test/test_use_minrequired.sh b/test/test_use_minrequired.sh
index b53b2fa..c39ea99 100755
--- a/test/test_use_minrequired.sh
+++ b/test/test_use_minrequired.sh
@@ -121,7 +121,7 @@ echo 'min-required' > .terraform-version;
 cleanup || log 'error' 'Cleanup failed?!';
 
 
-log 'info' '### Install min-required with TFENV_AUTO_INSTALL & -chdir';
+log 'info' '### Install min-required with TFENV_AUTO_INSTALL & -chdir with rel path';
 
 minv='1.1.0';
 
@@ -138,6 +138,24 @@ echo 'min-required' > chdir-dir/.terraform-version
 
 cleanup || log 'error' 'Cleanup failed?!';
 
+
+log 'info' '### Install min-required with TFENV_AUTO_INSTALL & -chdir with abs path';
+
+minv='1.2.3';
+
+mkdir -p chdir-dir
+echo "terraform {
+  required_version = \">=${minv}\"
+}" >> chdir-dir/min_required.tf;
+echo 'min-required' > chdir-dir/.terraform-version
+
+(
+  TFENV_AUTO_INSTALL=true terraform -chdir="${PWD}/chdir-dir" version;
+  check_active_version "${minv}" chdir-dir;
+) || error_and_proceed 'Min required version from -chdir does not match';
+
+cleanup || log 'error' 'Cleanup failed?!';
+
 if [ "${#errors[@]}" -gt 0 ]; then
   log 'warn' '===== The following use_minrequired tests failed =====';
   for error in "${errors[@]}"; do

From 4e3c605897a527a117095b5db947ee2b50b36a4f Mon Sep 17 00:00:00 2001
From: Oliver Ford <dev@ojford.com>
Date: Wed, 27 Jul 2022 19:35:04 +0100
Subject: [PATCH 2/5] Fix use of -chdir with an absolute path

Fixes #354.
---
 lib/tfenv-exec.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/tfenv-exec.sh b/lib/tfenv-exec.sh
index 189d222..6649df7 100644
--- a/lib/tfenv-exec.sh
+++ b/lib/tfenv-exec.sh
@@ -5,8 +5,10 @@ set -uo pipefail;
 function tfenv-exec() {
   for _arg in ${@:1}; do
     if [[ "${_arg}" == -chdir=* ]]; then
-      log 'debug' "Found -chdir arg. Setting TFENV_DIR to: ${_arg#-chdir=}";
-      export TFENV_DIR="${PWD}/${_arg#-chdir=}";
+      chdir="${_arg#-chdir=}";
+      log 'debug' "Found -chdir arg: ${chdir}";
+      export TFENV_DIR="${PWD}/$(realpath --relative-to="${PWD}" "$chdir")";
+      log 'debug' "Setting TFENV_DIR to: ${TFENV_DIR}";
     fi;
   done;
 

From 9cb216c4118a01748f9cbbb031c90f614f2e32b4 Mon Sep 17 00:00:00 2001
From: Oliver Ford <dev@ojford.com>
Date: Fri, 4 Nov 2022 22:05:45 +0000
Subject: [PATCH 3/5] Fix realpath not available on macOS

---
 lib/tfenv-exec.sh | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/lib/tfenv-exec.sh b/lib/tfenv-exec.sh
index 6649df7..66af4cd 100644
--- a/lib/tfenv-exec.sh
+++ b/lib/tfenv-exec.sh
@@ -2,12 +2,38 @@
 
 set -uo pipefail;
 
+function realpath-relative-to() {
+  # A basic implementation of GNU `realpath --relative-to=$1 $2`
+  # that can also be used on macOS.
+
+  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
+  readlink_f() {
+    local target_file="${1}";
+    local file_name;
+
+    while [ "${target_file}" != "" ]; do
+      cd "$(dirname "$target_file")" || early_death "Failed to 'cd \$(${target_file%/*})'";
+      file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"'";
+      target_file="$(readlink "${file_name}")";
+    done;
+
+    echo "$(pwd -P)/${file_name}";
+  };
+
+  local relative_to="$(readlink_f "${1}")";
+  local path="$(readlink_f "${2}")";
+
+  echo "${path#"${relative_to}/"}";
+  return 0;
+}
+export -f realpath-relative-to;
+
 function tfenv-exec() {
   for _arg in ${@:1}; do
     if [[ "${_arg}" == -chdir=* ]]; then
       chdir="${_arg#-chdir=}";
       log 'debug' "Found -chdir arg: ${chdir}";
-      export TFENV_DIR="${PWD}/$(realpath --relative-to="${PWD}" "$chdir")";
+      export TFENV_DIR="${PWD}/$(realpath-relative-to "${PWD}" "${chdir}")";
       log 'debug' "Setting TFENV_DIR to: ${TFENV_DIR}";
     fi;
   done;

From 23aea386b9deab7551f7458221cecbf34ae5b93d Mon Sep 17 00:00:00 2001
From: Oliver Ford <dev@ojford.com>
Date: Fri, 4 Nov 2022 22:47:37 +0000
Subject: [PATCH 4/5] Refactor readlink_f to common helpers

---
 bin/terraform                  | 13 -------------
 bin/tfenv                      | 13 -------------
 lib/helpers.sh                 | 28 +++++++++++++++-------------
 lib/tfenv-exec.sh              | 15 ---------------
 libexec/tfenv---version        | 14 --------------
 libexec/tfenv-exec             | 14 --------------
 libexec/tfenv-install          | 14 --------------
 libexec/tfenv-list             | 14 --------------
 libexec/tfenv-list-remote      | 14 --------------
 libexec/tfenv-min-required     | 14 --------------
 libexec/tfenv-pin              | 14 --------------
 libexec/tfenv-resolve-version  | 14 --------------
 libexec/tfenv-uninstall        | 14 --------------
 libexec/tfenv-use              | 14 --------------
 libexec/tfenv-version-file     | 14 --------------
 libexec/tfenv-version-name     | 14 --------------
 test/run.sh                    | 14 --------------
 test/test_install_and_use.sh   | 14 --------------
 test/test_list.sh              | 14 --------------
 test/test_symlink.sh           | 14 --------------
 test/test_uninstall.sh         | 14 --------------
 test/test_use_latestallowed.sh | 14 --------------
 test/test_use_minrequired.sh   | 14 --------------
 23 files changed, 15 insertions(+), 320 deletions(-)

diff --git a/bin/terraform b/bin/terraform
index cec01d2..c613df9 100755
--- a/bin/terraform
+++ b/bin/terraform
@@ -11,19 +11,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "${target_file%/*}" || early_death "Failed to 'cd \$(${target_file%/*})' while trying to determine TFENV_ROOT";
-      file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
   TFENV_SHIM=$(readlink_f "${0}")
   TFENV_ROOT="${TFENV_SHIM%/*/*}";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to determine TFENV_ROOT";
diff --git a/bin/tfenv b/bin/tfenv
index 28c24a1..d2fe313 100755
--- a/bin/tfenv
+++ b/bin/tfenv
@@ -11,19 +11,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "${target_file%/*}" || early_death "Failed to 'cd \$(${target_file%/*})' while trying to determine TFENV_ROOT";
-      file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
   TFENV_SHIM=$(readlink_f "${0}")
   TFENV_ROOT="${TFENV_SHIM%/*/*}";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to determine TFENV_ROOT";
diff --git a/lib/helpers.sh b/lib/helpers.sh
index 535232d..695dd7b 100755
--- a/lib/helpers.sh
+++ b/lib/helpers.sh
@@ -2,20 +2,22 @@
 
 set -uo pipefail;
 
+# http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
+readlink_f() {
+  local target_file="${1}";
+  local file_name;
+
+  while [ "${target_file}" != "" ]; do
+    cd "${target_file%/*}" || early_death "Failed to 'cd \$(${target_file%/*})'";
+    file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"'";
+    target_file="$(readlink "${file_name}")";
+  done;
+
+  echo "$(pwd -P)/${file_name}";
+};
+export -f readlink_f;
+
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "${target_file%/*}" || early_death "Failed to 'cd \$(${target_file%/*})' while trying to determine TFENV_ROOT";
-      file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
   TFENV_SHIM=$(readlink_f "${0}")
   TFENV_ROOT="${TFENV_SHIM%/*/*}";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to determine TFENV_ROOT";
diff --git a/lib/tfenv-exec.sh b/lib/tfenv-exec.sh
index 66af4cd..d0bd247 100644
--- a/lib/tfenv-exec.sh
+++ b/lib/tfenv-exec.sh
@@ -5,21 +5,6 @@ set -uo pipefail;
 function realpath-relative-to() {
   # A basic implementation of GNU `realpath --relative-to=$1 $2`
   # that can also be used on macOS.
-
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname "$target_file")" || early_death "Failed to 'cd \$(${target_file%/*})'";
-      file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"'";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   local relative_to="$(readlink_f "${1}")";
   local path="$(readlink_f "${2}")";
 
diff --git a/libexec/tfenv---version b/libexec/tfenv---version
index 52198f8..57533ac 100755
--- a/libexec/tfenv---version
+++ b/libexec/tfenv---version
@@ -21,20 +21,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-exec b/libexec/tfenv-exec
index 9d3be48..9319330 100755
--- a/libexec/tfenv-exec
+++ b/libexec/tfenv-exec
@@ -25,20 +25,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-install b/libexec/tfenv-install
index d13b384..99c916d 100755
--- a/libexec/tfenv-install
+++ b/libexec/tfenv-install
@@ -11,20 +11,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-list b/libexec/tfenv-list
index 3e50c51..8685cab 100755
--- a/libexec/tfenv-list
+++ b/libexec/tfenv-list
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-list-remote b/libexec/tfenv-list-remote
index 0e8a6fc..b847ad9 100755
--- a/libexec/tfenv-list-remote
+++ b/libexec/tfenv-list-remote
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname "${target_file}")" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-min-required b/libexec/tfenv-min-required
index 80d91b1..bccaf77 100755
--- a/libexec/tfenv-min-required
+++ b/libexec/tfenv-min-required
@@ -14,20 +14,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-pin b/libexec/tfenv-pin
index 1c7077c..8f548bc 100755
--- a/libexec/tfenv-pin
+++ b/libexec/tfenv-pin
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-resolve-version b/libexec/tfenv-resolve-version
index d0b66bc..b9b45ce 100755
--- a/libexec/tfenv-resolve-version
+++ b/libexec/tfenv-resolve-version
@@ -14,20 +14,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-uninstall b/libexec/tfenv-uninstall
index 83289c8..86acc59 100755
--- a/libexec/tfenv-uninstall
+++ b/libexec/tfenv-uninstall
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-use b/libexec/tfenv-use
index 0c411cc..5094de2 100755
--- a/libexec/tfenv-use
+++ b/libexec/tfenv-use
@@ -11,20 +11,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-version-file b/libexec/tfenv-version-file
index 153a29e..c320431 100755
--- a/libexec/tfenv-version-file
+++ b/libexec/tfenv-version-file
@@ -14,20 +14,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/libexec/tfenv-version-name b/libexec/tfenv-version-name
index db4ee4c..35ec313 100755
--- a/libexec/tfenv-version-name
+++ b/libexec/tfenv-version-name
@@ -13,20 +13,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n "${TFENV_ROOT}" ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/test/run.sh b/test/run.sh
index 0e1d362..010b437 100755
--- a/test/run.sh
+++ b/test/run.sh
@@ -11,20 +11,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/test/test_install_and_use.sh b/test/test_install_and_use.sh
index fd2b6f0..bdc9ac8 100755
--- a/test/test_install_and_use.sh
+++ b/test/test_install_and_use.sh
@@ -11,20 +11,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/test/test_list.sh b/test/test_list.sh
index bcb8d57..93879ea 100755
--- a/test/test_list.sh
+++ b/test/test_list.sh
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/test/test_symlink.sh b/test/test_symlink.sh
index 3c99bfd..21b674e 100755
--- a/test/test_symlink.sh
+++ b/test/test_symlink.sh
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/test/test_uninstall.sh b/test/test_uninstall.sh
index 70fe803..98a9603 100755
--- a/test/test_uninstall.sh
+++ b/test/test_uninstall.sh
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/test/test_use_latestallowed.sh b/test/test_use_latestallowed.sh
index 10af0d5..1032bf5 100755
--- a/test/test_use_latestallowed.sh
+++ b/test/test_use_latestallowed.sh
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else
diff --git a/test/test_use_minrequired.sh b/test/test_use_minrequired.sh
index c39ea99..5bad29c 100755
--- a/test/test_use_minrequired.sh
+++ b/test/test_use_minrequired.sh
@@ -12,20 +12,6 @@ function early_death() {
 };
 
 if [ -z "${TFENV_ROOT:-""}" ]; then
-  # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
-  readlink_f() {
-    local target_file="${1}";
-    local file_name;
-
-    while [ "${target_file}" != "" ]; do
-      cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT";
-      file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT";
-      target_file="$(readlink "${file_name}")";
-    done;
-
-    echo "$(pwd -P)/${file_name}";
-  };
-
   TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)";
   [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT";
 else

From 7df205d1b3b7c5f64bb65d3165324b1a71962c1f Mon Sep 17 00:00:00 2001
From: Oliver Ford <dev@ojford.com>
Date: Sat, 5 Nov 2022 00:14:38 +0000
Subject: [PATCH 5/5] Fix readlink_f of relative dir

Previously `readlink_f example` would result in
`path/to/example/example`, duplicating the the relative directory.
---
 lib/helpers.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/helpers.sh b/lib/helpers.sh
index 695dd7b..dd5e21a 100755
--- a/lib/helpers.sh
+++ b/lib/helpers.sh
@@ -8,7 +8,7 @@ readlink_f() {
   local file_name;
 
   while [ "${target_file}" != "" ]; do
-    cd "${target_file%/*}" || early_death "Failed to 'cd \$(${target_file%/*})'";
+    cd "$(dirname "${target_file}")" || early_death "Failed to 'cd \$(${target_file%/*})'";
     file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"'";
     target_file="$(readlink "${file_name}")";
   done;