On Feb. 15, Geany 0.16 has been released. This source code editor is getting more and more complex and this new version introduces some new features and a lot of bugfixes. I now use it for all my C projects because it is very lightweight, easy to use, has syntax-coloring and completion.

I recently packaged this new version of Geany for Ubuntu and it can be downloaded from my PPA (personal package archive): https://launchpad.net/~weboide/+archive/ppa

You can also download the source code directly from http://www.geany.org/.

Here are the release notes (source):

 Bug fixes:
    * Fix indenting for Tabs & Spaces mode when inserting snippets.
    * Fix snippets and smart indent using too much indentation when the
      line contains whitespace after non-whitespace characters (#2215044).
    * Fix segfault when showing Find in Files dialog when no documents are
      open (#2228544).
    * Fix not switching to 2nd last used document when the last used
      document has been closed (#1945162).

    General:
    * Group child tags by their parents in the symbol list for C-like
      filetypes, Python, Conf (thanks to Conrad Steenberg).
    * Use a tree for the Documents sidebar, grouped by path.
    * Add 'Tools->Configuration Files' menu with items to open
      filetype_extensions.conf and ignore.tags. These files are also
      reloaded automatically when saved.
    * Change configuration directory path to $XDG_CONFIG_HOME/geany
      (most often this is ~/.config/geany).
    * Allow to specify files on the command line and from remote instances
      to be URIs (local and with GIO also remote URIs).
    * Increase minimum required GTK version to 2.8.

    Prefs:
    * Add Project Indentation prefs, which override the Editor
      Preferences dialog options. For new projects, these default to
      the editor indent prefs.
    * Add an interface pref for whether to hide additional widgets when
      double-clicking on document notebook tabs (off by default).
    * Add a preference to invert all colours for syntax highlighting.
    * Add a hidden preference "allow_always_save" to make the Save buttons
      and menu items always sensitive.

    Interface:
    * Rework the toolbar: now all elements can be added/removed/reordered
      using a simple XML file.
    * Add new toolbar buttons for Cut, Copy, Paste, Delete, Preferences,
      Close All and Build (including a submenu for Make actions).
    * Add a progressbar widget to the statusbar to show progress for time
      consuming actions.

    Editor:
    * Make Ctrl-click go to matching brace if there's no current word.
    * Make Shift+Mouse wheel scroll the editor view horizontally.
    * Make the 'Mark' button for Find highlight the results with rounded boxes
      instead of marking the whole line.
    * Add auto-closing of braces, brackets and quotes (Guillaume de Rorthais).
    * Support multiple  wildcards in Snippets (Thomas Martitz).

    Filetypes:
    * Add new filetypes Ada, CMake, Matlab, NSIS, Vala and YAML.
    * Update HTML character entities (thanks to Tyler D'Agosta).
    * Parse restructuredText sections in the order of first-used underline
      character, which can now be any punctuation character (as per the spec).
    * Remove GTK global tags, replace them with C (C99) tags. The GTK tags
      file is still available for download on the website.
    * Minor improvements for filetypes CSS, Fortran, FreeBasic, HTML, Tcl
      and Vala.

    Windows:
    * Improve tab close icon size.
    * Changes to the Windows installer:
      - The full installer now includes the GTK 2.14 runtime environment.
      - Register ".geany" as Geany Project File extension.
      - Install GTK translation files only if installation of translation
        files were requested (saves about 22 MB otherwise).
      - Support silent installations.

    Plugins:
    * Add Split Window 'Split Vertically' command (thanks to Moritz Barsnick).
    * Make Version Diff plugin set the indent type for diffs based on the
      current file's indent type.
    * Minor improvements to the filebrowser plugin

    Plugin API:
    * Generate plugin API header geanyfunctions.h containing macros to
      avoid having to type the function pointer names manually.
    * Deprecate pluginmacros.h in favour of geanyfunctions.h.
    * Add "editor-notify" to the plugin API.
    * Add new plugin symbol plugin_help() which is called by Geany when the
      plugin should show its documentation (if any, symbol is optional).

    Documentation:
    * Update Scintilla regular expression info for v1.77 (character
      classes, ASCII escaping, character sets containing square
      brackets peculiarities). Adapted from SciTE doc.

    Internationalisation:
    * Updated translations: bg, ca, cs, de, en_GB, fr, hu, it, ja,
      pt_BR, sv, ru, tr, vi, zh_CN