Remove bashisms in apng2webp and allow for images with >100 frames

.config/zsh/functions/apng2webp

@@ -14,37 +14,37 @@ if [[ ${#o_help} -ne 0 || ! -v 2 ]]; then
           "<INPUT FILE> <OUTPUT FILE>"
     return ${ret}
 fi
-local input="$(realpath "${1}")"
-local output="$(realpath "${2}")"
+local input=$(realpath ${1})
+local output=$(realpath ${2})
 
 local tmpdir=$(mktemp --directory --suffix='.apng2webp')
 pushd ${tmpdir}
 
 mkdir -p apngdis
 pushd apngdis
-cp "${input}" "input.png"
-apngdis "input.png"
+cp ${input} input.png
+apngdis input.png
 popd
 
 counter=1
 for file in apngdis/apngframe*.png; do
-    cwebp -lossless -q 100 "${file}" -o "$(printf "%02d" ${counter}).webp"
+    cwebp -lossless -q 100 ${file} -o $(printf "%03d.webp" ${counter})
     counter=$(( counter+1 ))
 done
 
 local -a webpmux_options=()
 local -i counter=1
 for file in apngdis/apngframe*.txt; do
-    local delay=$(grep -Po '=\d+/' "${file}")
+    local delay=$(grep -Po '=\d+/' ${file})
     delay=${delay:1:-1}
     [[ ${#o_delay} -eq 2 ]] && delay=${o_delay[2]}
 
-    webpmux_options+=(-frame $(printf "%02d.webp" ${counter}) +${delay}+0+0+0-b)
+    webpmux_options+=(-frame $(printf "%03d.webp" ${counter}) +${delay}+0+0+0-b)
     counter+=1
 done
 
 # shellcheck disable=2086
-webpmux ${webpmux_options} -o "${output}"
+webpmux ${webpmux_options} -o ${output}
 
 popd
 rm -r ${tmpdir}