more months preview

src/awk/new.awk

@@ -46,19 +46,15 @@ END {
   cmd | getline t
   close(cmd)
   t = t + 0
-  print "fromnano="t
   if (t == 0) {
-    print "ok, DATE-TIME type"
     from_type = "DATE-TIME"
     cmd = "date -d \"" from "\" +\"@%s\" | xargs date -u +\"%Y%m%dT%H%M00Z\" -d"
   } else {
-    print "ok, DATE type"
     from_type = "DATE"
     cmd = "date -d \"" from "\" +\"%Y%m%d\"";
   }
   cmd | getline from
   close(cmd)
-  print "FROM="from
   #
   to = to ? to : "now"
   cmd = "date -d \"" to "\" +\"%N\"";

src/main.sh

@@ -449,6 +449,30 @@ if [ "${1:-}" = "--preview" ]; then
   exit
 fi
 
+month_previous() {
+  month="$1"
+  year="$2"
+  if [ "$month" -eq 1 ]; then
+    month=12
+    year=$((year - 1))
+  else
+    month=$((month - 1))
+  fi
+  echo "$month $year"
+}
+
+month_next() {
+  month="$1"
+  year="$2"
+  if [ "$month" -eq 12 ]; then
+    month=1
+    year=$((year + 1))
+  else
+    month=$((month + 1))
+  fi
+  echo "$month $year"
+}
+
 if [ "${1:-}" = "--preview-week" ]; then
   sign=$(echo "$2" | cut -d '|' -f 1)
   if [ "$sign" = "+" ]; then
@@ -461,23 +485,27 @@ if [ "${1:-}" = "--preview-week" ]; then
     year_cur=$1
     month_cur=$2
     day_cur=$3
-    # Previous month
+    # Previous months
-    if [ "$month" -eq 1 ]; then
+    set -- $(month_previous "$month" "$year")
-      month_pre=12
+    month_pre="$1"
-      year_pre=$((year - 1))
+    year_pre="$2"
-    else
+    set -- $(month_previous "$month_pre" "$year_pre")
-      month_pre=$((month - 1))
+    month_pre2="$1"
-      year_pre=$year
+    year_pre2="$2"
-    fi
+    # Next months
-    # Next month
+    set -- $(month_next "$month" "$year")
-    if [ "$month" -eq 12 ]; then
+    month_nex="$1"
-      month_nex=1
+    year_nex="$2"
-      year_nex=$((year + 1))
+    set -- $(month_next "$month_nex" "$year_nex")
-    else
+    month_nex2="$1"
-      month_nex=$((month + 1))
+    year_nex2="$2"
-      year_nex=$year
+    set -- $(month_next "$month_nex2" "$year_nex2")
-    fi
+    month_nex3="$1"
+    year_nex3="$2"
     # Highlight today
+    if [ "$month_pre2" -eq "$month_cur" ] && [ "$year_pre2" -eq "$year_cur" ]; then
+      var_pre2=$day_cur
+    fi
     if [ "$month_pre" -eq "$month_cur" ] && [ "$year_pre" -eq "$year_cur" ]; then
       var_pre=$day_cur
     fi
@@ -487,11 +515,20 @@ if [ "${1:-}" = "--preview-week" ]; then
     if [ "$month_nex" -eq "$month_cur" ] && [ "$year_nex" -eq "$year_cur" ]; then
       var_nex=$day_cur
     fi
+    if [ "$month_nex2" -eq "$month_cur" ] && [ "$year_nex2" -eq "$year_cur" ]; then
+      var_nex2=$day_cur
+    fi
+    if [ "$month_nex3" -eq "$month_cur" ] && [ "$year_nex3" -eq "$year_cur" ]; then
+      var_nex3=$day_cur
+    fi
     # show
     (
+      cal "$month_pre2" "$year_pre2" | awk -v cur="${var_pre2:-}" "$AWK_CAL"
       cal "$month_pre" "$year_pre" | awk -v cur="${var_pre:-}" "$AWK_CAL"
       cal "$month" "$year" | awk -v cur="${var:-}" -v day="$day" "$AWK_CAL"
       cal "$month_nex" "$year_nex" | awk -v cur="${var_nex:-}" "$AWK_CAL"
+      cal "$month_nex2" "$year_nex2" | awk -v cur="${var_nex2:-}" "$AWK_CAL"
+      cal "$month_nex3" "$year_nex3" | awk -v cur="${var_nex3:-}" "$AWK_CAL"
     ) | awk '{ l[NR%8] = l[NR%8] "    " $0 } END {for (i in l) if (i>0) print l[i] }'
   fi
   exit
@@ -552,9 +589,10 @@ selection=$(
       --with-nth='{4}' \
       --accept-nth=1,2 \
       --ansi \
+      --gap 1 \
       --no-scrollbar \
       --info=right \
-      --info-command='printf "Timezone: ${TZ:-as system} ($(date +"%Z"))"' \
+      --info-command='printf "Timezone: ${TZ:-as system} (now: $(date))"' \
       --preview-window=up,7,border-bottom \
       --preview="$0 --preview-week {}" \
       --expect="ctrl-n" \