From eea0ffe9748e2144791b3f98a386316b030ec613 Mon Sep 17 00:00:00 2001
From: Shahram Najm <masn@ecmwf.int>
Date: Wed, 17 Jan 2024 11:52:44 +0000
Subject: [PATCH] Sub hourly: Re-add the lowercase 'stepunits' key (For MARS
 compatibility)

---
 definitions/grib2/stepUnits.def | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/definitions/grib2/stepUnits.def b/definitions/grib2/stepUnits.def
index 68efa462a..cffc236be 100644
--- a/definitions/grib2/stepUnits.def
+++ b/definitions/grib2/stepUnits.def
@@ -1,3 +1,5 @@
+# (C) Copyright 2005- ECMWF.
+
 # alias defaultStepUnits = one; # 1 means Hour. See code table 4.4
 # template_nofail default_step_units "grib2/localConcepts/[centre:s]/default_step_units.def";
 # codetable[1] stepUnits 'stepUnits.table' = defaultStepUnits : transient,dump,no_copy;
@@ -5,3 +7,5 @@
 meta stepUnits optimal_step_units(forecastTime,indicatorOfUnitOfTimeRange,lengthOfTimeRange,indicatorOfUnitForTimeRange) : transient,dump;
 transient startStepUnit = 255 : hidden; # 255 means MISSING. See code table 4.4
 transient endStepUnit = 255 : hidden;
+# The lowercase version is to unify it with the helper key in the MARS language
+alias stepunits = stepUnits;