[ferret_users] Strange behavior between STRRINDEX and low case variable names

[Olivier Marti <olivier.marti@xxxxxxxxxxxx>]

I have a strange behavior with low case variable names and STRRINDEX

The script :

SET MODE VERIFY

DEFINE SYMBOL MON_file "/path/to/file/My-File.nc"

LET V_MON_FILE = "($MON_file)"

LET v_MON_file = "($MON_file)"

SAY `v_MON_file`

SAY `V_MON_FILE`

LET p_sla = `STRRINDEX ( V_MON_FILE, "/") `

LET p_sla = `STRRINDEX ( v_MON_file, "/") `

And the result :

yes? go essai.jnl

SET MODE VERIFY

DEFINE SYMBOL MON_file "/path/to/file/My-File.nc"

LET V_MON_FILE = "($MON_file)"

 !-> DEFINE VARIABLE V_MON_FILE = "/path/to/file/My-File.nc"

LET v_MON_file = "($MON_file)"

 !-> DEFINE VARIABLE v_MON_file = "/path/to/file/My-File.nc"

SAY `v_MON_file`

 !-> MESSAGE/CONTINUE /path/to/file/My-File.nc

/path/to/file/My-File.nc

SAY `V_MON_FILE`

 !-> MESSAGE/CONTINUE /path/to/file/My-File.nc

/path/to/file/My-File.nc

LET p_sla = `STRRINDEX ( V_MON_FILE, "/") `

 !-> DEFINE VARIABLE p_sla = 14

LET p_sla = `STRRINDEX ( v_MON_file, "/") `

 **ERROR: variable unknown or not in data set:  _MON_

DEFINE VARIABLE p_sla = `STRRINDEX ( v_MON_file, "/") `

Command file, command group, or REPEAT execution aborted

STRRINDEX removes low case letter in the variable name. This is in Ferret 7.0, and was not observed in Ferret 6.9*

Olivier

-- 

Dr. Olivier Marti  - mailto:olivier.marti@xxxxxxxxxxxx

Laboratoire des Sciences du Climat et de l'Environnement

Institut Pierre Simon Laplace

Laboratoire CEA-CNRS-UVSQ  -  UMR 8212

Tel : +33 1 69 08 77 27 - Mob : +33 6 45 36 43 74

Fax : +33 1 69 08 30 73

<http://www.lsce.ipsl.fr/Pisp/olivier.marti>