Add timestamp for entered commands.

.blerc

@@ -52,3 +52,20 @@ function blerc/define-sabbrev-commit {
 }
 blehook/eval-after-load complete blerc/define-sabbrev-commit
 
+# Show the timestamp aligned to the right after each command is entered.
+show_timestamp() {
+    # 17:10:00 EST-05
+    local ts="$(date +'%H:%M:%S %Z%:::z')"
+    # Column to show timestamp.(COLUMNS - length_of_timestamp)
+    local col=$((COLUMNS - ${#ts}))
+    # Save current cursor position.
+    printf '\033[s'
+    # Move cursor to desired column.
+    printf "\033[${col}G"
+    # Print timestamp in gray.
+    printf '\e[90m%s\e[0m' "$ts"
+    # Restore previous cursor position.
+    printf '\033[u'
+}
+
+blehook PREEXEC=show_timestamp