fix: allow plugin callbacks to be in any language (#995)

lib/commands/command-help.bash

@@ -94,18 +94,18 @@ print_plugin_help() {
 
   # Eventually @jthegedus or someone else will format the output from these
   # scripts in a certain way.
-  bash "${plugin_path}"/bin/help.overview
+  "${plugin_path}"/bin/help.overview
 
   if [ -f "${plugin_path}"/bin/help.deps ]; then
-    bash "${plugin_path}"/bin/help.deps
+    "${plugin_path}"/bin/help.deps
   fi
 
   if [ -f "${plugin_path}"/bin/help.config ]; then
-    bash "${plugin_path}"/bin/help.config
+    "${plugin_path}"/bin/help.config
   fi
 
   if [ -f "${plugin_path}"/bin/help.links ]; then
-    bash "${plugin_path}"/bin/help.links
+    "${plugin_path}"/bin/help.links
   fi
 }
 

lib/commands/command-install.bash

@@ -169,7 +169,7 @@ install_tool_version() {
         export ASDF_DOWNLOAD_PATH=$download_path
         mkdir "$download_path"
         asdf_run_hook "pre_asdf_download_${plugin_name}" "$full_version"
-        bash "${plugin_path}"/bin/download
+        "${plugin_path}"/bin/download
       )
     fi
 
@@ -188,7 +188,7 @@ install_tool_version() {
         export ASDF_CONCURRENCY=$concurrency
         mkdir "$install_path"
         asdf_run_hook "pre_asdf_install_${plugin_name}" "$full_version"
-        bash "${plugin_path}"/bin/install
+        "${plugin_path}"/bin/install
       )
     fi
 

lib/commands/command-latest.bash

@@ -15,7 +15,7 @@ latest_command() {
   local versions
 
   if [ -f "${plugin_path}/bin/latest-stable" ]; then
-    versions=$(bash "${plugin_path}"/bin/latest-stable "$query")
+    versions=$("${plugin_path}"/bin/latest-stable "$query")
     if [ -z "${versions}" ]; then
       # this branch requires this print to mimic the error from the list-all branch
       printf "No compatible versions available (%s %s)\n" "$plugin_name" "$query" >&2

lib/commands/command-list-all.bash

@@ -13,7 +13,7 @@ list_all_command() {
   # Capture return code to allow error handling
   std_out_file="$(mktemp "/tmp/asdf-command-list-all-${plugin_name}.stdout.XXXXXX")"
   std_err_file="$(mktemp "/tmp/asdf-command-list-all-${plugin_name}.stderr.XXXXXX")"
-  return_code=0 && bash "${plugin_path}/bin/list-all" >"$std_out_file" 2>"$std_err_file" || return_code=$?
+  return_code=0 && "${plugin_path}/bin/list-all" >"$std_out_file" 2>"$std_err_file" || return_code=$?
 
   if [[ $return_code -ne 0 ]]; then
     # Printing all output to allow plugin to handle error formatting

lib/commands/command-plugin-add.bash

@@ -41,7 +41,7 @@ plugin_add_command() {
       (
         export ASDF_PLUGIN_SOURCE_URL=$source_url
         export ASDF_PLUGIN_PATH=$plugin_path
-        bash "${plugin_path}/bin/post-plugin-add"
+        "${plugin_path}/bin/post-plugin-add"
       )
     fi
 

lib/commands/command-plugin-remove.bash

@@ -13,7 +13,7 @@ plugin_remove_command() {
   if [ -f "${plugin_path}/bin/pre-plugin-remove" ]; then
     (
       export ASDF_PLUGIN_PATH=$plugin_path
-      bash "${plugin_path}/bin/pre-plugin-remove"
+      "${plugin_path}/bin/pre-plugin-remove"
     )
   fi
 

lib/commands/command-uninstall.bash

@@ -36,7 +36,7 @@ uninstall_command() {
       export ASDF_INSTALL_TYPE=$install_type
       export ASDF_INSTALL_VERSION=$version
       export ASDF_INSTALL_PATH=$install_path
-      bash "${plugin_path}/bin/uninstall"
+      "${plugin_path}/bin/uninstall"
     )
   else
     rm -rf "$install_path"

lib/utils.bash

@@ -198,7 +198,7 @@ find_versions() {
   local legacy_filenames=""
 
   if [ "$legacy_config" = "yes" ] && [ -f "$legacy_list_filenames_script" ]; then
-    legacy_filenames=$(bash "$legacy_list_filenames_script")
+    legacy_filenames=$($legacy_list_filenames_script)
   fi
 
   while [ "$search_path" != "/" ]; do
@@ -329,7 +329,7 @@ parse_legacy_version_file() {
 
   if [ -f "$file_path" ]; then
     if [ -f "$parse_legacy_script" ]; then
-      bash "$parse_legacy_script" "$file_path"
+      "$parse_legacy_script" "$file_path"
     else
       cat "$file_path"
     fi
@@ -481,7 +481,7 @@ list_plugin_bin_paths() {
       export ASDF_INSTALL_TYPE=$install_type
       export ASDF_INSTALL_VERSION=$version
       export ASDF_INSTALL_PATH=$install_path
-      bash "${plugin_path}/bin/list-bin-paths"
+      "${plugin_path}/bin/list-bin-paths"
     )
   else
     local space_separated_list_of_bin_paths="bin"