In the detailed commit window, we can not see the diff for a .psd1 file (Message "Binary file modified"), .psd1 are text file : http://msdn.microsoft.com/en-us/library/windows/desktop/dd878337%28v=vs.85%29.aspx

This is a very, very minor issue

Edit : it seems the problem is in fact with unicode encoding, like describe in BCLOUD-5648

Also, these extensions:
.PS1 – Windows PowerShell shell script
.PSD1 – Windows PowerShell data file (for Version 2)
.PSM1 – Windows PowerShell module file (for Version 2)
.PS1XML – Windows PowerShell format and type definitions
.CLIXML - Windows PowerShell serialized data
.PSC1 – Windows PowerShell console file
.PSSC - Windows PowerShell Session Configuration file