From b5429624c2d32ffc911789ea046b25bd10fe81a0 Mon Sep 17 00:00:00 2001
From: Ivan Pozdeev <vano@mail.mipt.ru>
Date: Wed, 10 Feb 2021 22:46:08 +0300
Subject: [PATCH] Use a better PS4 as recommeneded by Bash Hackers Wiki

it allows to see functions as well as lines, therefore making it possible to see the control flow
---
 libexec/rbenv | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libexec/rbenv b/libexec/rbenv
index a1b9d69f..070c441c 100755
--- a/libexec/rbenv
+++ b/libexec/rbenv
@@ -7,7 +7,8 @@ if [ "$1" = "--debug" ]; then
 fi
 
 if [ -n "$RBENV_DEBUG" ]; then
-  export PS4='+ [${BASH_SOURCE##*/}:${LINENO}] '
+  # https://wiki-dev.bash-hackers.org/scripting/debuggingtips#making_xtrace_more_useful
+  export PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
   set -x
 fi