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Kai Willadsen authored
The recent-files API provided by GTK+ doesn't actually work for Meld out-of-the-box, because instead of storing individual files, we need to stored multiple linked files. In other words, we need to store a comparison, not a file. This commit adds support for reading and writing a simple comparison record format with a new Meld-specific mime-type. These files are stored under the user data directory, and are managed by the new 'recent' module. Meld creates these files for new top-level comparisons and inserts them into the recently-used store as proxies for the actual file tuples. Note that we deliberately avoid recording as recently-used comparisons that are invoked from other comparisons; a user may open ten quick file comparisons from a single VC comparison, but they probably don't actually want to re-open those from the recent files menu. There is also support for opening comparison files from the command line. This was added so that recent comparisons can be opened from the desktop recent files menu, but can also be used to manually open specified comparisons.
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