This came up in discussion #1938.

Describe the Problem

When using a file window (using OBS_FILE_WINDOW_BEGIN and OBS_FILE_WINDOW_END), files that match the template but have additional content in the name like a .gz extension, the files that don't exactly match are being used. This is caused by the logic to automatically uncompress zipped files if they are found.

There is also a bug in EnsembleStat wrapper where multiple obs files are not being set properly, which results in a crash.

Expected Behavior

LOOP_BY = INIT
INIT_TIME_FMT = %Y%m%d%H
INIT_BEG = 2019070112
INIT_END = 2019070112

OBS_FILE_WINDOW_BEGIN = -300
OBS_FILE_WINDOW_END = 300
OBS_ENSEMBLE_STAT_GRID_INPUT_TEMPLATE = {valid?fmt=%Y%m%d}/MergedReflectivityQCComposite_00.50_{valid?fmt=%Y%m%d}-{valid?fmt=%H%M%S}.grib2

The above configuration should find files that match the template ending in grib2 but not include files ending in grib2.gz.

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