photoprep: preserve image description

.config/zsh/functions/photoprep

@@ -23,10 +23,15 @@ local size=${o_size[2]}
 local format=${o_format[2]}
 
 mkdir -p photoprep
+local jq_filter='.[0] | {"ImageDescription", "UserComment", "Comment", "Description", "Description-en-US", "Description-de-DE"}'
 for file in ${@}; do
     newfile=photoprep/${file##*/}
     newfile=${newfile%.*}.${format}
+    local exif_json=$(mktemp --suffix='.photoprep.json')
+    exiftool -json ${file} | jq ${jq_filter} | grep -v null > ${exif_json}
     magick -quality ${quality} ${file} -auto-orient -strip -resize ${size} ${newfile}
+    exiftool -json=${exif_json} -quiet -overwrite_original ${newfile}
+    rm ${exif_json}
     print -n '.'
 done
 print