[Gmsh] MSH file format

[Rémi Mahouas]

Hello, 

I am writing to you because we need some help about the MSH file format.
I explain our problem : we use a script that requires a .msh file format
in version 2 (or 2.2) and not in version 4. We have seen in the PDF
Documentation of GMSH (in the Chapter 9 "File formats" page 107) that
"The format has a version number that is independent of Gmsh's main
version number". Indeed, we tried to create .msh file format in version
2 with GMSH V2.8.4 and with GMSH V4 and the result is the same : the
.msh file created is in format 4 and not in format 2 as we would like...
But, several weeks ago, we tried to create a .msh file in format version
2... 

Our question is : how can we "force" GMSH to create .msh file in format
version 2 ? What is the element in the GMSH software that choose the
file format (because GMSH V2.8.4 is an old version but it create .msh
file in format 4 that I suppose it is a most recent format that doesn't
exist when GMSH V2.8.4 was released) ? 

Please help us on this. Thank you. 

Best regards, 

-- 
RéMI MAHOUAS
Ingénieur d'essais
Département matériaux et structures
Élaboration et Techniques de Contrôle des Composites
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