replace arithmetic comparisons of the form [[ ... ]] with (( ... ))

batrg

@@ -264,7 +264,7 @@ for ((i=1,ie=$#batrg_args; i <= ie; ++i)) ; do
   esac
 done
 
-if [[ $positional_pattern -eq 1 ]] && [[ $# -eq 0 ]]; then
+if (( $positional_pattern == 1 && $# == 0 )); then
   help
   exit 2
 fi
@@ -279,41 +279,41 @@ else
   terminal_width=
 fi
 
-if [[ $#file_separator -eq 1 ]]; then
+if (( $#file_separator == 1 )); then
   if [[ -n $terminal_width ]]; then
     file_separator=${${(l:$terminal_width:: :)''}// /"$file_separator"}$'\n'
   else
     file_separator=
   fi
 fi
 
-if [[ $style -eq 0 ]] && [[ -z $BAT_STYLE ]]; then
-  if [[ $snip -eq 2 ]]; then
-    if [[ $ctx_after -eq 0 ]] && [[ $ctx_before -eq 0 ]]; then
+if (( $style == 0 )) && [[ -z $BAT_STYLE ]]; then
+  if (( $snip == 2 )); then
+    if (( $ctx_after == 0 && $ctx_before == 0 )); then
       snip=0
     else
       # --style=snip since bat-0.12
       bat_version=$($=bat_engine --version)
       setopt extendedglob
       if [[ $bat_version = 'bat '(#b)(<0-9>##).(<0-9>##)* ]] &&
         [[ ${bat_version[$mbegin[1],$mend[1]]} = 0 ]] &&
-        [[ ${bat_version[$mbegin[2],$mend[2]]} -lt 12 ]] ;
+        (( ${bat_version[$mbegin[2],$mend[2]]} < 12 )) ;
       then
         snip=0
       fi
       setopt noextendedglob
     fi
   fi
 
-  if [[ $snip -eq 0 ]]; then
+  if (( $snip == 0 )); then
     bat_args+=(--style=numbers,header)
   else
     bat_args+=(--style=numbers,header,snip)
   fi
 fi
 
-if [[ $highlight -eq 2 ]]; then
-  if [[ $ctx_after -eq 0 ]] && [[ $ctx_before -eq 0 ]]; then
+if (( $highlight == 2 )); then
+  if (( $ctx_after == 0 && $ctx_before == 0 )); then
     highlight=0
   else
     highlight=1
@@ -324,7 +324,7 @@ fi
 temp_files=()
 remove_temps()
 {
-  if [[ $#temp_files -ne 0 ]]; then
+  if (( $#temp_files != 0 )); then
     rm -- $temp_files
   fi
 }
@@ -340,7 +340,7 @@ if [[ $@[$i] = '--' ]] ; then
   rg_args+=(--)
 fi
 
-if [[ $positional_pattern -eq 1 ]]; then
+if (( $positional_pattern == 1 )); then
   rg_args+=($@[$file_index])
   ((++file_index))
 fi
@@ -358,20 +358,20 @@ for ((i=1,ie=$#files; i <= $ie; ++i)) ; do
       <$files[$i] >$tmp
     fi
     files[$i]=$tmp
-  elif [[ $files[$i] = '--' ]] && [[ $has_sep -eq 0 ]]; then
+  elif [[ $files[$i] = '--' ]] && (( $has_sep == 0 )); then
     ((--nb_files))
     has_sep=1
   fi
   ((++nb_files))
 done
 
-if [[ $nb_files -eq 0 ]] && [[ ! -t 0 ]]; then
+if (( $nb_files == 0 )) && [[ ! -t 0 ]]; then
   tmp=${BATRG_PREFIX}stdin
   temp_files+=($tmp)
   files+=($tmp)
   nb_files=1
   <&0 >$tmp
-elif [[ $nb_files -eq 1 ]] && [[ -d $files ]] ; then
+elif (( $nb_files == 1 )) && [[ -d $files ]] ; then
   nb_files=2  # assume there is more than 1 file
 fi
 
@@ -393,9 +393,9 @@ main()
 
     run_bat()
     {
-      [[ $found -ne 0 ]] && echo -nE $file_separator
+      (( $found != 0 )) && echo -nE $file_separator
       first_line=$(($first_line-$ctx_before))
-      [[ $first_line -gt 0 ]] || first_line=
+      (( $first_line > 0 )) || first_line=
       curr_bat_args[1]='--line-range='$first_line':'$(($prev_line+$ctx_after))
       $=bat_engine $bat_args $curr_bat_args -- $filename
       found=2
@@ -421,24 +421,24 @@ main()
           break
         fi
 
-        if [[ $(($prev_line+1)) -ne $line ]]; then
+        if (( $prev_line+1 != $line )); then
           first_line=$(($first_line-$ctx_before))
-          [[ $first_line -gt 0 ]] || first_line=
+          (( $first_line > 0 )) || first_line=
           curr_bat_args+=( '--line-range='$first_line':'$(($prev_line+$ctx_after)) )
           first_line=$line
         fi
 
-        if [[ $highlight -eq 1 ]]; then
+        if (( $highlight == 1 )); then
           curr_bat_args+=(--highlight-line=$line)
         fi
 
         prev_line=$line
       done
     done
 
-    if [[ $prev_line -ne -1 ]]; then
+    if (( $prev_line != -1 )); then
       run_bat
-      [[ $file_separator_wrap -eq 1 ]] && echo -nE $file_separator
+      (( $file_separator_wrap == 1 )) && echo -nE $file_separator
     fi
   }
 
@@ -448,7 +448,7 @@ main()
 main_with_pager()
 {
   if [[ -t 1 ]]; then
-    if [[ $color -eq 0 ]]; then
+    if (( $color == 0 )); then
       bat_args+=(--color=always)
     fi
     bat_args+=(--paging=never)
@@ -460,7 +460,7 @@ main_with_pager()
 
 case $paging in
   auto)
-    if [[ $nb_files -eq 1 ]]; then
+    if (( $nb_files == 1 )); then
       main
     else
       if [[ ${pager/ */} = 'less' ]]; then
@@ -470,7 +470,7 @@ case $paging in
     fi
     ;;
   always)
-    if [[ $nb_files -eq 1 ]]; then
+    if (( $nb_files == 1 )); then
       bat_args+=(--paging=always)
       main
     else