From b319781e304c668da0ef144b1b4ee48977d4877d Mon Sep 17 00:00:00 2001
From: Scott Stevenson <scott@stevenson.io>
Date: Mon, 5 Feb 2024 22:22:43 +0000
Subject: [PATCH] home-manager: Check VISUAL before EDITOR for editor

Check VISUAL for a visual editor before EDITOR, as per Unix convention
and as followed by Git, crontab, mutt, and other tools.
---
 docs/home-manager.1       |  2 +-
 home-manager/home-manager | 14 +++++++++-----
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/docs/home-manager.1 b/docs/home-manager.1
index 1747735e..41406aca 100644
--- a/docs/home-manager.1
+++ b/docs/home-manager.1
@@ -97,7 +97,7 @@ Instantiate the configuration and print the resulting derivation\&.
 
 .It Cm edit
 .RS 16
-Open the home configuration using the editor indicated by \fBEDITOR\fR\&.
+Open the home configuration using the editor indicated by \fBVISUAL\fR or \fBEDITOR\fR\&.
 .RE
 .Pp
 
diff --git a/home-manager/home-manager b/home-manager/home-manager
index eb69530a..ba3b8d98 100644
--- a/home-manager/home-manager
+++ b/home-manager/home-manager
@@ -565,10 +565,14 @@ function presentNews() {
 }
 
 function doEdit() {
-    if [[ ! -v EDITOR || -z $EDITOR ]]; then
-        # shellcheck disable=2016
-        _i 'Please set the $EDITOR environment variable' >&2
-        return 1
+    if [[ ! -v VISUAL || -z $VISUAL ]]; then
+        if [[ ! -v EDITOR || -z $EDITOR ]]; then
+            # shellcheck disable=2016
+            _i 'Please set the $EDITOR or $VISUAL environment variable' >&2
+            return 1
+        fi
+    else
+        EDITOR=$VISUAL
     fi
 
     setConfigFile
@@ -881,7 +885,7 @@ function doHelp() {
     echo
     echo "  help         Print this help"
     echo
-    echo "  edit         Open the home configuration in \$EDITOR"
+    echo "  edit         Open the home configuration in \$VISUAL or \$EDITOR"
     echo
     echo "  option OPTION.NAME"
     echo "               Inspect configuration option named OPTION.NAME."