Meld: associate file extension with language syntax highlighting

Question

I use meld for graphical diff comparisons.

I would like to associate .tpp as a C++ source file for syntax highlighting purposes.

How do I do this?

Answer 1

Meld uses the Gnome project's GtkSourceView component for syntax highlighting.

In order to change the file associations, edit the following file:

/usr/share/gtksourceview-3.0/language-specs/cpp.lang

Edit the "globs" section under language/metadata/property and add ;*.tpp

<property name="globs">*.cpp;*.cxx;*.cc;*.C;*.c++;*.tpp</property>
                                                 ^^^^^^

Answer 2

You can create custom lang files in

~/.local/share/gtksourceview-3.0/language-specs/

If the directory does not already exist, you can create it. Then copy the lang file you want to use as a template from

/usr/share/gtksourceview-3.0/language-specs/