From b39d4291bed8439330f8a399dcdf6f11cf03eabe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Skytt=C3=A4?= <ville.skytta@iki.fi>
Date: Tue, 8 Mar 2022 20:58:58 +0200
Subject: [PATCH] Simplify version file read

Avoid a subshell and external `cut` invocation, as well as a throwaway
intermediate array.
---
 libexec/rbenv-version-file-read | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libexec/rbenv-version-file-read b/libexec/rbenv-version-file-read
index 2e3b4a2e..b467d76f 100755
--- a/libexec/rbenv-version-file-read
+++ b/libexec/rbenv-version-file-read
@@ -8,8 +8,7 @@ VERSION_FILE="$1"
 if [ -s "$VERSION_FILE" ]; then
   # Read the first word from the specified version file. Avoid reading it whole.
   IFS="${IFS}"$'\r'
-  words=( $(cut -b 1-1024 "$VERSION_FILE") )
-  version="${words[0]}"
+  read -n 1024 -d "" -r version _ <"$VERSION_FILE" || :
 
   if [ "$version" = ".." ] || [[ $version == */* ]]; then
     echo "rbenv: invalid version in \`$VERSION_FILE'" >&2