From a429d549424241eec8d686150b92eb7f047b7f10 Mon Sep 17 00:00:00 2001
From: Oleg Broytman <phd@phdru.name>
Date: Tue, 15 Dec 2020 00:02:15 +0300
Subject: [PATCH] bash_prompt: Show -behind/+ahead counters

---
 admin/prog/bash_prompt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/admin/prog/bash_prompt b/admin/prog/bash_prompt
index eb152c9..4e428f3 100644
--- a/admin/prog/bash_prompt
+++ b/admin/prog/bash_prompt
@@ -69,6 +69,22 @@ prompt_git() {
                       git rev-parse --short HEAD 2> /dev/null || \
                       printf "(unknown)")"
 
+        up=`git rev-parse --abbrev-ref @{u} 2>/dev/null`
+        if [ -n "$up" ]; then
+            local left right
+            set -- `git rev-list --count --left-right @{u}...@`
+            left=$1
+            right=$2
+            if [ "$left" -gt 0 -o "$right" -gt 0 ]; then
+                if [ "$left" -gt 0 ]; then
+                    s="$s-$left"
+                fi
+                if [ "$right" -gt 0 ]; then
+                    s="$s+$right"
+                fi
+            fi
+        fi
+
         [ -n "$s" ] && s=" $s"
         printf " (%s)" "$branchName$s"
     fi
-- 
2.39.2