To reach this options page, select Options > Options... > File Comparisons > File Types > Edit...
Use this window to edit the file patterns that determine which type of comparison window to use to compare files.
Type
Shows the type of comparison that should be opened for files whose names match the patterns in the field below.
Pattern
Enter one or more semi-colon separated patterns that match the files that should be compared using the comparison type shown above. For example, to match image files, you could use *.bmp;*.gif;*.jpg;*.png.
Filter Program
Enter an optional name or fully-qualified path of any program or script that should be used to filter files when they are opened or saved. Filters enable Merge to compare the contents of files in formats that it would otherwise not understand.
Filters located in the Araxis Merge installation directory’s Filters folder do not require a fully-qualified path. User-provided filter programs or scripts can either be copied into that folder, or located elsewhere. In the latter case, a fully-qualified path to the program or script should be entered into this field.
When Merge opens or saves a file that matches the pattern specified in a file type row in the File Types Options page, it runs the filter program with three filename arguments. The first specifies a file containing the data to be transformed
by the filter program. The second specifies a file into which the transformed data should be written. The third filename argument
specifies a file containing keys and values describing the transformation being performed. Merge will also pass an option
argument of -f or -r to indicate that a forward (when reading a file) or reverse (when writing to a file) transformation is required.
If the filter program is unable to operate on the input file provided by Merge (if reverse transformations are not supported, for example), it should report an error to Standard Error, and return a non-zero exit code.
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