[Github-comments] [geany/geany] Document data (#1203)

[Matthew Brush]

It's useful to be able to attach arbitrary data to documents, especially for plugins. This PR adds GObject-like keyed data lists to documents so plugins can add stuff similar to `g_object_get|set_data()`. The first commit adds a simple wrapper to the document module, the second exposes a safe API for plugins.

In the future if GeanyDocument is ever converted to a GObject, the new `document_get|set_data()` functions could become simple wrappers around `g_object_get|set_data()` rather than using keyed data lists directly.

Aside from conventional plugins, this will also be useful for planned "filetype plugins" from #1195 and possibly for certain proxy plugin implementations, and could even prove useful in the core.

A made a very simple test plugin to tinker with this in https://github.com/codebrainz/geany/commit/b662ba3ca15969429ee2f9cf4c00e84024e499bd.
You can view, comment on, or merge this pull request online at:

  https://github.com/geany/geany/pull/1203

-- Commit Summary --

  * Add support for Keyed Data Lists for documents
  * Add plugin API functions to get/set document data

-- File Changes --

    M src/document.c (23)
    M src/document.h (7)
    M src/documentprivate.h (2)
    M src/plugins.c (39)
    M src/pluginutils.c (153)
    M src/pluginutils.h (11)

-- Patch Links --

https://github.com/geany/geany/pull/1203.patch
https://github.com/geany/geany/pull/1203.diff

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