Preserve original IFSs

libexec/pyenv-global

@@ -27,12 +27,14 @@ PYENV_VERSION_FILE="${PYENV_ROOT}/version"
 if [ -n "$versions" ]; then
   pyenv-version-file-write "$PYENV_VERSION_FILE" "${versions[@]}"
 else
+  OLDIFS="$IFS"
   IFS=: versions=($(
     pyenv-version-file-read "$PYENV_VERSION_FILE" ||
     pyenv-version-file-read "${PYENV_ROOT}/global" ||
     pyenv-version-file-read "${PYENV_ROOT}/default" ||
     echo system
   ))
+  IFS="$OLDIFS"
   for version in "${versions[@]}"; do
     echo "$version"
   done

libexec/pyenv-local

@@ -46,6 +46,7 @@ elif [ -n "$versions" ]; then
   fi
   pyenv-version-file-write .python-version "${versions[@]}"
 else
+  OLDIFS="$IFS"
   IFS=: versions=($(
     pyenv-version-file-read .python-version ||
     pyenv-version-file-read .pyenv-version ||
@@ -53,6 +54,7 @@ else
       exit 1
     } >&2
   ))
+  IFS="$OLDIFS"
   for version in "${versions[@]}"; do
     echo "$version"
   done

libexec/pyenv-prefix

@@ -17,10 +17,14 @@ fi
 
 if [ -n "$1" ]; then
   versions=($@)
+  OLDIFS="$IFS"
   IFS=: PYENV_VERSION="${versions[*]}"
+  IFS="$OLDIFS"
   export PYENV_VERSION
 else
+  OLDIFS="$IFS"
   IFS=: versions=($(pyenv-version-name))
+  IFS="$OLDIFS"
 fi
 
 PYENV_PREFIX_PATHS=()
@@ -39,4 +43,8 @@ for version in "${versions[@]}"; do
   fi
 done
 
-IFS=: echo "${PYENV_PREFIX_PATHS[*]}"
+OLDIFS="$IFS"
+{ IFS=:
+  echo "${PYENV_PREFIX_PATHS[*]}"
+}
+IFS="$OLDIFS"

libexec/pyenv-sh-shell

@@ -42,7 +42,9 @@ fi
 
 # Make sure the specified version is installed.
 if pyenv-prefix "${versions[@]}" >/dev/null; then
+  OLDIFS="$IFS"
   IFS=: PYENV_VERSION="${versions[*]}"
+  IFS="$OLDIFS"
   echo "export PYENV_VERSION=\"${PYENV_VERSION}\""
 else
   echo "return 1"

libexec/pyenv-version

@@ -8,7 +8,9 @@
 set -e
 [ -n "$PYENV_DEBUG" ] && set -x
 
+OLDIFS="$IFS"
 IFS=: PYENV_VERSION_NAMES=($(pyenv-version-name))
+IFS="$OLDIFS"
 
 for PYENV_VERSION_NAME in "${PYENV_VERSION_NAMES[@]}"; do
   echo "$PYENV_VERSION_NAME (set by $(pyenv-version-origin))"

libexec/pyenv-version-file-read

@@ -18,10 +18,11 @@ if [ -e "$VERSION_FILE" ]; then
   done < <( cat "$VERSION_FILE" && echo )
 
   if [ -n "$versions" ]; then
-    {
-      IFS=:
+    OLDIFS="$IFS"
+    { IFS=:
       echo "${versions[*]}"
     }
+    IFS="$OLDIFS"
     exit
   fi
 fi

libexec/pyenv-version-name

@@ -4,11 +4,15 @@ set -e
 [ -n "$PYENV_DEBUG" ] && set -x
 
 if [ -n "$PYENV_VERSION" ]; then
+  OLDIFS="$IFS"
   IFS=: versions=($(echo "${PYENV_VERSION}"))
+  IFS="$IFS"
 else
   PYENV_VERSION_FILE="$(pyenv-version-file)"
+  OLDIFS="$IFS"
   IFS=: versions=($(pyenv-version-file-read "$PYENV_VERSION_FILE" || true))
   IFS=: PYENV_VERSION="${versions[*]}"
+  IFS="$OLDIFS"
   export PYENV_VERSION
 fi
 

libexec/pyenv-versions

@@ -16,7 +16,9 @@ if [ "$1" = "--bare" ]; then
 else
   hit_prefix="* "
   miss_prefix="  "
-  current_versions=($(IFS=:; for version in $(pyenv-version-name); do echo "$version"; done || true))
+  OLDIFS="$IFS"
+  IFS=: current_versions=($(pyenv-version-name || true))
+  IFS="$OLDIFS"
   version_origin=" (set by $(pyenv-version-origin))"
   include_system="1"
 fi

libexec/pyenv-which

@@ -36,7 +36,9 @@ remove_from_path() {
   fi
 
   local paths
+  OLDIFS="$IFS"
   IFS=: paths=($PATH)
+  IFS="$OLDIFS"
 
   for path in "${paths[@]}"; do
     path="$(expand_path "$path" || true)"
@@ -48,8 +50,10 @@ remove_from_path() {
   echo "${result%:}"
 }
 
+OLDIFS="$IFS"
 IFS=: versions=($(pyenv-version-name))
 IFS=: PYENV_VERSION="${versions[*]}"
+IFS="$OLDIFS"
 PYENV_COMMAND="$1"
 
 if [ -z "$PYENV_COMMAND" ]; then