From d85c23c433cd5ff07fc5a1d5210d1d63a608a572 Mon Sep 17 00:00:00 2001
From: Daniel Bretoi <daniel@otherware.org>
Date: Thu, 12 Sep 2024 22:15:18 -0700
Subject: [PATCH 1/4] Update preview-tui

make NNN_PREVIEWIMGPROG flexible enough to accept any program. programs like `timg` would also work (my preference), but it seems odd to add every single program out there when it's easy to add new ones by just this one variable
---
 plugins/preview-tui | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/preview-tui b/plugins/preview-tui
index 860a93a04..200d3e33f 100755
--- a/plugins/preview-tui
+++ b/plugins/preview-tui
@@ -460,6 +460,8 @@ image_preview() {
         chafa "$3" &
     elif exists img2sixel && [[ "$NNN_PREVIEWIMGPROG" == +(|img2sixel) ]]; then
         img2sixel -g "$3" &
+    elif exists "$NNN_PREVIEWIMGPROG"; then
+        "$NNN_PREVIEWIMGPROG" "$3" &
     else
         fifo_pager print_bin_info "$3" && return
     fi

From ef1ef5646118bbb76978636033483b27381743f7 Mon Sep 17 00:00:00 2001
From: Daniel Bretoi <daniel@otherware.org>
Date: Sun, 15 Sep 2024 11:43:38 +0700
Subject: [PATCH 2/4] make image preview more generic

---
 plugins/preview-tui | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/plugins/preview-tui b/plugins/preview-tui
index 200d3e33f..56f334164 100755
--- a/plugins/preview-tui
+++ b/plugins/preview-tui
@@ -21,7 +21,7 @@
 #   - man
 #   - optional: bsdtar or atool for additional archive preview
 #   - optional: bat for code syntax highlighting
-#   - optional: ueberzug, kitty terminal, wezterm terminal, img2sixel, viu, catimg or chafa for images
+#   - optional: ueberzug, kitty terminal, wezterm terminal, img2sixel, viu, catimg, timg or chafa for images
 #   - optional: convert(ImageMagick) for playing gif preview (mandatory for kitty image previews)
 #   - optional: mpv for gif and video
 #       Also requires a terminal supporting the sixel (https://www.arewesixelyet.com/)
@@ -131,7 +131,7 @@ ENVVARS+=(
 )
 
 trap '' PIPE
-exists() { type "$1" >/dev/null 2>&1 ;}
+exists() { type "${1%% *}" >/dev/null 2>&1 ;}
 pkill() { command pkill "$@" >/dev/null 2>&1 ;}
 prompt() { clear; printf "%b" "$@"; cfg=$(stty -g); stty raw -echo; head -c 1; stty "$cfg" ;}
 pidkill() {
@@ -450,16 +450,6 @@ image_preview() {
         kitty +kitten icat --silent --scale-up --place "$(($1 - 1))x$(($2 - 1))"@0x0 --transfer-mode=memory --stdin=no "$3" &
     elif [ "$NNN_TERMINAL" = "wezterm" ] && [[ "$NNN_PREVIEWIMGPROG" == +(|imgcat) ]]; then
         wezterm imgcat "$3" &
-    elif exists ueberzug && [[ "$NNN_PREVIEWIMGPROG" == +(|ueberzug) ]]; then
-        ueberzug_layer "$1" "$2" "$3" && return
-    elif exists catimg && [[ "$NNN_PREVIEWIMGPROG" == +(|catimg) ]]; then
-        catimg "$3" &
-    elif exists viu && [[ "$NNN_PREVIEWIMGPROG" == +(|viu) ]]; then
-        viu -t "$3" &
-    elif exists chafa && [[ "$NNN_PREVIEWIMGPROG" == +(|chafa) ]]; then
-        chafa "$3" &
-    elif exists img2sixel && [[ "$NNN_PREVIEWIMGPROG" == +(|img2sixel) ]]; then
-        img2sixel -g "$3" &
     elif exists "$NNN_PREVIEWIMGPROG"; then
         "$NNN_PREVIEWIMGPROG" "$3" &
     else

From 7571d172aa46cfe9820f99f7e8686fe30aaeead9 Mon Sep 17 00:00:00 2001
From: Daniel Bretoi <daniel@otherware.org>
Date: Sun, 15 Sep 2024 11:45:29 +0700
Subject: [PATCH 3/4] add uberzug back

---
 plugins/preview-tui | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/preview-tui b/plugins/preview-tui
index 56f334164..80597f348 100755
--- a/plugins/preview-tui
+++ b/plugins/preview-tui
@@ -450,6 +450,8 @@ image_preview() {
         kitty +kitten icat --silent --scale-up --place "$(($1 - 1))x$(($2 - 1))"@0x0 --transfer-mode=memory --stdin=no "$3" &
     elif [ "$NNN_TERMINAL" = "wezterm" ] && [[ "$NNN_PREVIEWIMGPROG" == +(|imgcat) ]]; then
         wezterm imgcat "$3" &
+    elif exists ueberzug && [[ "$NNN_PREVIEWIMGPROG" == +(|ueberzug) ]]; then
+        ueberzug_layer "$1" "$2" "$3" && return
     elif exists "$NNN_PREVIEWIMGPROG"; then
         "$NNN_PREVIEWIMGPROG" "$3" &
     else

From aa04d6370bcd2745252bf82b9e7cbdef2c98a1d5 Mon Sep 17 00:00:00 2001
From: Luuk van Baal <luukvbaal@gmail.com>
Date: Sun, 15 Sep 2024 16:04:37 +0200
Subject: [PATCH 4/4] change and document variable expansion

---
 plugins/preview-tui | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/plugins/preview-tui b/plugins/preview-tui
index 80597f348..45177fdbb 100755
--- a/plugins/preview-tui
+++ b/plugins/preview-tui
@@ -112,7 +112,7 @@ ENVVARS=(
   "NNN_PREVIEWWIDTH=${NNN_PREVIEWWIDTH:-1920}"             # width of generated preview images
   "NNN_PREVIEWHEIGHT=${NNN_PREVIEWHEIGHT:-1080}"           # height of generated preview images
   "NNN_PREVIEWDIR=${NNN_PREVIEWDIR:-$TMPDIR/nnn/previews}" # location of generated preview images
-  "NNN_PREVIEWIMGPROG=${NNN_PREVIEWIMGPROG:-}"             # program used to preview images
+  "NNN_PREVIEWIMGPROG=${NNN_PREVIEWIMGPROG:-}"             # command used to preview images
   "NNN_PREVIEWVIDEO=${NNN_PREVIEWVIDEO:-}"                 # mpv backend used to preview video
 )
 # Non-configurable environment variables
@@ -131,7 +131,7 @@ ENVVARS+=(
 )
 
 trap '' PIPE
-exists() { type "${1%% *}" >/dev/null 2>&1 ;}
+exists() { type "$1" >/dev/null 2>&1 ;}
 pkill() { command pkill "$@" >/dev/null 2>&1 ;}
 prompt() { clear; printf "%b" "$@"; cfg=$(stty -g); stty raw -echo; head -c 1; stty "$cfg" ;}
 pidkill() {
@@ -452,7 +452,7 @@ image_preview() {
         wezterm imgcat "$3" &
     elif exists ueberzug && [[ "$NNN_PREVIEWIMGPROG" == +(|ueberzug) ]]; then
         ueberzug_layer "$1" "$2" "$3" && return
-    elif exists "$NNN_PREVIEWIMGPROG"; then
+    elif exists "${NNN_PREVIEWIMGPROG%% *}"; then # can include command flags; only check first word
         "$NNN_PREVIEWIMGPROG" "$3" &
     else
         fifo_pager print_bin_info "$3" && return