From daaa32104fcbafdecd2f6eec15975dca3b7cc665 Mon Sep 17 00:00:00 2001
From: Johannes Altmanninger <aclopte@gmail.com>
Date: Sun, 23 Mar 2025 15:59:58 +0100
Subject: rc git: throw an error when diffutils is not installed

Some of our git wrappers use the diff utility; if it's not installed we'll
hang because no one is opening the fifo for reading.  For example, this
happens when running

	chmod -x $(which diff) &&
	kak -e "edit README.asciidoc; git apply"

Fail earlier, I guess -- although it's probably fine as-is.
---
 rc/tools/git.kak | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'rc')

diff --git a/rc/tools/git.kak b/rc/tools/git.kak
index b5cbb778..b4be1973 100644
--- a/rc/tools/git.kak
+++ b/rc/tools/git.kak
@@ -195,6 +195,9 @@ define-command -params 1.. \
     }
 
     diff_buffer_against_rev() {
+        if ! command -v diff >/dev/null; then
+            echo >${kak_command_fifo} "fail diff: command not found"
+        fi
         rev=$1 # empty means index
         shift
         buffile_relative=${kak_buffile#"$(git rev-parse --show-toplevel)/"}
-- 
cgit v1.2.3