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[gtk/demo-keywords: 6/6] gtk-demo: Add keywords to demos


commit d732c869c2fa5adbe8ac278bbf587cb6f65af878
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 13 14:59:33 2020 -0400

    gtk-demo: Add keywords to demos
    
    Add the names of the main widgets as keywords to
    our demos, but also things like "game". This helps
    finding relevant demos in our growing list. You
    can now for example type "label", and find the
    "error states" and "links" demos showing GtkLabel
    features.

 demos/gtk-demo/assistant.c            |  6 +++---
 demos/gtk-demo/combobox.c             |  1 +
 demos/gtk-demo/constraints.c          |  1 +
 demos/gtk-demo/constraints2.c         |  1 +
 demos/gtk-demo/css_accordion.c        |  1 -
 demos/gtk-demo/css_basics.c           |  3 +--
 demos/gtk-demo/css_multiplebgs.c      |  3 +--
 demos/gtk-demo/dialog.c               |  1 +
 demos/gtk-demo/drawingarea.c          |  1 +
 demos/gtk-demo/filtermodel.c          |  1 +
 demos/gtk-demo/fixed.c                |  1 +
 demos/gtk-demo/gestures.c             |  1 +
 demos/gtk-demo/headerbar.c            |  1 +
 demos/gtk-demo/hypertext.c            |  1 +
 demos/gtk-demo/iconscroll.c           |  1 +
 demos/gtk-demo/images.c               |  1 +
 demos/gtk-demo/infobar.c              |  1 +
 demos/gtk-demo/layoutmanager.c        |  1 +
 demos/gtk-demo/layoutmanager2.c       |  1 +
 demos/gtk-demo/list_store.c           |  1 -
 demos/gtk-demo/listbox.c              |  1 -
 demos/gtk-demo/listview_applauncher.c |  1 +
 demos/gtk-demo/listview_clocks.c      |  3 ++-
 demos/gtk-demo/listview_colors.c      |  1 +
 demos/gtk-demo/listview_filebrowser.c |  1 +
 demos/gtk-demo/listview_minesweeper.c |  3 ++-
 demos/gtk-demo/listview_settings.c    |  1 +
 demos/gtk-demo/listview_words.c       |  1 +
 demos/gtk-demo/markup.c               |  1 +
 demos/gtk-demo/overlay.c              |  1 +
 demos/gtk-demo/overlay2.c             |  1 +
 demos/gtk-demo/pagesetup.c            |  1 +
 demos/gtk-demo/paint.c                |  1 +
 demos/gtk-demo/peg_solitaire.c        |  1 +
 demos/gtk-demo/pickers.c              |  2 ++
 demos/gtk-demo/printing.c             |  1 -
 demos/gtk-demo/rotated_text.c         |  4 ++--
 demos/gtk-demo/search_entry2.c        | 12 ++++++++----
 demos/gtk-demo/shadertoy.c            |  1 +
 demos/gtk-demo/shortcut_triggers.c    |  1 +
 demos/gtk-demo/sliding_puzzle.c       |  2 +-
 demos/gtk-demo/spinbutton.c           |  1 +
 demos/gtk-demo/spinner.c              |  1 -
 demos/gtk-demo/textscroll.c           |  1 +
 demos/gtk-demo/transparent.c          |  1 +
 demos/gtk-demo/video_player.c         |  2 ++
 46 files changed, 55 insertions(+), 21 deletions(-)
---
diff --git a/demos/gtk-demo/assistant.c b/demos/gtk-demo/assistant.c
index 58405f6cc9..a84b87ad81 100644
--- a/demos/gtk-demo/assistant.c
+++ b/demos/gtk-demo/assistant.c
@@ -1,8 +1,8 @@
 /* Assistant
  *
- * Demonstrates a sample multi-step assistant. Assistants are used to divide
- * an operation into several simpler sequential steps, and to guide the user
- * through these steps.
+ * Demonstrates a sample multi-step assistant with GtkAssistant. Assistants
+ * are used to divide an operation into several simpler sequential steps,
+ * and to guide the user through these steps.
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/combobox.c b/demos/gtk-demo/combobox.c
index 0686eaf59b..d7a7320eb0 100644
--- a/demos/gtk-demo/combobox.c
+++ b/demos/gtk-demo/combobox.c
@@ -1,4 +1,5 @@
 /* Combo Boxes
+ * #Keywords: GtkCellRenderer
  *
  * The GtkComboBox widget allows to select one option out of a list.
  * The GtkComboBoxEntry additionally allows the user to enter a value
diff --git a/demos/gtk-demo/constraints.c b/demos/gtk-demo/constraints.c
index 6f842008fb..2e31f22462 100644
--- a/demos/gtk-demo/constraints.c
+++ b/demos/gtk-demo/constraints.c
@@ -1,4 +1,5 @@
 /* Constraints/Simple
+ * #Keywords: GtkLayoutManager
  *
  * GtkConstraintLayout provides a layout manager that uses relations
  * between widgets (also known as "constraints") to compute the position
diff --git a/demos/gtk-demo/constraints2.c b/demos/gtk-demo/constraints2.c
index 8e804592ed..d63b369739 100644
--- a/demos/gtk-demo/constraints2.c
+++ b/demos/gtk-demo/constraints2.c
@@ -1,4 +1,5 @@
 /* Constraints/Interactive
+ * #Keywords: GtkConstraintLayout
  *
  * Demonstrate how constraints can be updates during user interaction.
  * The vertical edge between the buttons can be dragged with the mouse.
diff --git a/demos/gtk-demo/css_accordion.c b/demos/gtk-demo/css_accordion.c
index 45e3538803..c544f8a02d 100644
--- a/demos/gtk-demo/css_accordion.c
+++ b/demos/gtk-demo/css_accordion.c
@@ -1,7 +1,6 @@
 /* Theming/CSS Accordion
  *
  * A simple accordion demo written using CSS transitions and multiple backgrounds
- *
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/css_basics.c b/demos/gtk-demo/css_basics.c
index bb193d62ef..1c9f309800 100644
--- a/demos/gtk-demo/css_basics.c
+++ b/demos/gtk-demo/css_basics.c
@@ -1,8 +1,7 @@
 /* Theming/CSS Basics
  *
- * Gtk themes are written using CSS. Every widget is build of multiple items
+ * GTK themes are written using CSS. Every widget is build of multiple items
  * that you can style very similarly to a regular website.
- *
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/css_multiplebgs.c b/demos/gtk-demo/css_multiplebgs.c
index dd11c2ddbf..b3badee669 100644
--- a/demos/gtk-demo/css_multiplebgs.c
+++ b/demos/gtk-demo/css_multiplebgs.c
@@ -1,8 +1,7 @@
 /* Theming/Multiple Backgrounds
  *
- * Gtk themes are written using CSS. Every widget is build of multiple items
+ * GTK themes are written using CSS. Every widget is build of multiple items
  * that you can style very similarly to a regular website.
- *
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/dialog.c b/demos/gtk-demo/dialog.c
index 91b1bfa8bb..3b355fef3e 100644
--- a/demos/gtk-demo/dialog.c
+++ b/demos/gtk-demo/dialog.c
@@ -1,4 +1,5 @@
 /* Dialogs
+ * #Keywords: GtkMessageDialog
  *
  * Dialogs are used to pop up transient windows for information
  * and user feedback.
diff --git a/demos/gtk-demo/drawingarea.c b/demos/gtk-demo/drawingarea.c
index f7b567d382..14b87f64d3 100644
--- a/demos/gtk-demo/drawingarea.c
+++ b/demos/gtk-demo/drawingarea.c
@@ -1,4 +1,5 @@
 /* Drawing Area
+ * #Keywords: GtkDrawingArea
  *
  * GtkDrawingArea is a blank area where you can draw custom displays
  * of various kinds.
diff --git a/demos/gtk-demo/filtermodel.c b/demos/gtk-demo/filtermodel.c
index 85180372ee..b4f07337b1 100644
--- a/demos/gtk-demo/filtermodel.c
+++ b/demos/gtk-demo/filtermodel.c
@@ -1,4 +1,5 @@
 /* Tree View/Filter Model
+ * #Keywords: GtkTreeView
  *
  * This example demonstrates how GtkTreeModelFilter can be used not
  * just to show a subset of the rows, but also to compute columns
diff --git a/demos/gtk-demo/fixed.c b/demos/gtk-demo/fixed.c
index b9a140df4a..f539e53e9b 100644
--- a/demos/gtk-demo/fixed.c
+++ b/demos/gtk-demo/fixed.c
@@ -1,4 +1,5 @@
 /* Fixed Layout
+ * #Keywords: GtkLayoutManager
  *
  * GtkFixed is a container that allows placing and transforming
  * widgets manually.
diff --git a/demos/gtk-demo/gestures.c b/demos/gtk-demo/gestures.c
index 690d4ea355..d6682db9a4 100644
--- a/demos/gtk-demo/gestures.c
+++ b/demos/gtk-demo/gestures.c
@@ -1,4 +1,5 @@
 /* Gestures
+ * #Keywords: GtkGesture
  *
  * Perform gestures on touchscreens and other input devices. This
  * demo reacts to long presses and swipes from all devices, plus
diff --git a/demos/gtk-demo/headerbar.c b/demos/gtk-demo/headerbar.c
index 2783f08a8d..f5e81fca89 100644
--- a/demos/gtk-demo/headerbar.c
+++ b/demos/gtk-demo/headerbar.c
@@ -1,4 +1,5 @@
 /* Header Bar
+ * #Keywords: GtkWindowHandle, GtkWindowControls
  *
  * GtkHeaderBar is a container that is suitable for implementing
  * window titlebars. One of its features is that it can position
diff --git a/demos/gtk-demo/hypertext.c b/demos/gtk-demo/hypertext.c
index 95c5a3ea31..9236d188a5 100644
--- a/demos/gtk-demo/hypertext.c
+++ b/demos/gtk-demo/hypertext.c
@@ -1,4 +1,5 @@
 /* Text View/Hypertext
+ * #Keywords: GtkTextView, GtkTextBuffer
  *
  * Usually, tags modify the appearance of text in the view, e.g. making it
  * bold or colored or underlined. But tags are not restricted to appearance.
diff --git a/demos/gtk-demo/iconscroll.c b/demos/gtk-demo/iconscroll.c
index 9c9e198e2c..3c05e2755d 100644
--- a/demos/gtk-demo/iconscroll.c
+++ b/demos/gtk-demo/iconscroll.c
@@ -1,4 +1,5 @@
 /* Benchmark/Scrolling
+ * #Keywords: GtkScrolledWindow
  *
  * This demo scrolls a view with various content.
  */
diff --git a/demos/gtk-demo/images.c b/demos/gtk-demo/images.c
index c53bd5f688..43d138101c 100644
--- a/demos/gtk-demo/images.c
+++ b/demos/gtk-demo/images.c
@@ -1,4 +1,5 @@
 /* Images
+ * #Keywords: GdkPaintable, GtkWidgetPaintable
  *
  * GtkImage and GtkPicture are used to display an image; the image can be
  * in a number of formats.
diff --git a/demos/gtk-demo/infobar.c b/demos/gtk-demo/infobar.c
index 32f88c8eb8..15caf10286 100644
--- a/demos/gtk-demo/infobar.c
+++ b/demos/gtk-demo/infobar.c
@@ -1,4 +1,5 @@
 /* Info Bars
+ * #Keywords: GtkInfoBar
  *
  * Info bar widgets are used to report important messages to the user.
  */
diff --git a/demos/gtk-demo/layoutmanager.c b/demos/gtk-demo/layoutmanager.c
index b07c453798..b03bc040a1 100644
--- a/demos/gtk-demo/layoutmanager.c
+++ b/demos/gtk-demo/layoutmanager.c
@@ -1,4 +1,5 @@
 /* Layout Manager/Transition
+ * #Keywords: GtkLayoutManager
  *
  * This demo shows a simple example of a custom layout manager
  * and a widget using it. The layout manager places the children
diff --git a/demos/gtk-demo/layoutmanager2.c b/demos/gtk-demo/layoutmanager2.c
index 8d17f2a47d..83691c3dfe 100644
--- a/demos/gtk-demo/layoutmanager2.c
+++ b/demos/gtk-demo/layoutmanager2.c
@@ -1,4 +1,5 @@
 /* Layout Manager/Transformation
+ * #Keywords: GtkLayoutManager, GskTransform
  *
  * This demo shows how to use transforms in a nontrivial
  * way with a custom layout manager. The layout manager places
diff --git a/demos/gtk-demo/list_store.c b/demos/gtk-demo/list_store.c
index 1ca6bff2d1..7619a51a68 100644
--- a/demos/gtk-demo/list_store.c
+++ b/demos/gtk-demo/list_store.c
@@ -3,7 +3,6 @@
  * The GtkListStore is used to store data in list form, to be used
  * later on by a GtkTreeView to display it. This demo builds a
  * simple GtkListStore and displays it.
- *
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/listbox.c b/demos/gtk-demo/listbox.c
index 0a9b6959df..4905fecd79 100644
--- a/demos/gtk-demo/listbox.c
+++ b/demos/gtk-demo/listbox.c
@@ -2,7 +2,6 @@
  *
  * GtkListBox allows lists with complicated layouts, using
  * regular widgets supporting sorting and filtering.
- *
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/listview_applauncher.c b/demos/gtk-demo/listview_applauncher.c
index 3dcdbca055..15f5e32a96 100644
--- a/demos/gtk-demo/listview_applauncher.c
+++ b/demos/gtk-demo/listview_applauncher.c
@@ -1,4 +1,5 @@
 /* Lists/Application launcher
+ * #Keywords: GtkListItemFactory, GListModel
  *
  * This demo uses the GtkListView widget as a fancy application launcher.
  *
diff --git a/demos/gtk-demo/listview_clocks.c b/demos/gtk-demo/listview_clocks.c
index 9dbdc0d5e7..22a463823d 100644
--- a/demos/gtk-demo/listview_clocks.c
+++ b/demos/gtk-demo/listview_clocks.c
@@ -1,10 +1,11 @@
 /* Lists/Clocks
+ * #Keywords: GtkGridView, GtkListItemFactory, GListModel
  *
  * This demo displays the time in different timezones.
  *
  * The goal is to show how to set up expressions that track changes
  * in objects and make them update widgets. For that, we create a
- * GtkClock object that updates its time every second and then use
+ * clock object that updates its time every second and then use
  * various ways to display that time.
  *
  * Typically, this will be done using GtkBuilder .ui files with the
diff --git a/demos/gtk-demo/listview_colors.c b/demos/gtk-demo/listview_colors.c
index aa4cdf1468..c05807a1c1 100644
--- a/demos/gtk-demo/listview_colors.c
+++ b/demos/gtk-demo/listview_colors.c
@@ -1,4 +1,5 @@
 /* Lists/Colors
+ * #Keywords: GtkSortListModel, GtkMultiSelection
  *
  * This demo displays a grid of colors.
  *
diff --git a/demos/gtk-demo/listview_filebrowser.c b/demos/gtk-demo/listview_filebrowser.c
index 47237cb3c7..a840950ee8 100644
--- a/demos/gtk-demo/listview_filebrowser.c
+++ b/demos/gtk-demo/listview_filebrowser.c
@@ -1,4 +1,5 @@
 /* Lists/File browser
+ * #Keywords: GListModel
  *
  * This demo shows off the different layouts that are quickly achievable
  * with GtkListview and GtkGridView by implementing a file browser with
diff --git a/demos/gtk-demo/listview_minesweeper.c b/demos/gtk-demo/listview_minesweeper.c
index e43eaceb0b..11ad0759be 100644
--- a/demos/gtk-demo/listview_minesweeper.c
+++ b/demos/gtk-demo/listview_minesweeper.c
@@ -1,7 +1,8 @@
 /* Lists/Minesweeper
+ * #Keywords: GtkGridView, GListModel, game
  *
  * This demo shows how to develop a user interface for small game using a
- * gridview.
+ * grid view.
  *
  * It demonstrates how to use the activate signal and single-press behavior
  * to implement rather different interaction behavior to a typical list.
diff --git a/demos/gtk-demo/listview_settings.c b/demos/gtk-demo/listview_settings.c
index 57e4797c1a..6e67d56790 100644
--- a/demos/gtk-demo/listview_settings.c
+++ b/demos/gtk-demo/listview_settings.c
@@ -1,4 +1,5 @@
 /* Lists/Settings
+ * #Keywords: GtkListItemFactory, GListModel
  *
  * This demo shows a settings viewer for GSettings.
  *
diff --git a/demos/gtk-demo/listview_words.c b/demos/gtk-demo/listview_words.c
index 4aa9a9977c..867f74e652 100644
--- a/demos/gtk-demo/listview_words.c
+++ b/demos/gtk-demo/listview_words.c
@@ -1,4 +1,5 @@
 /* Lists/Words
+ * #Keywords: GtkListView, GtkFilterListModel
  *
  * This demo shows filtering a long list - of words.
  *
diff --git a/demos/gtk-demo/markup.c b/demos/gtk-demo/markup.c
index 6648d508f3..900436f6e7 100644
--- a/demos/gtk-demo/markup.c
+++ b/demos/gtk-demo/markup.c
@@ -1,4 +1,5 @@
 /* Text View/Markup
+ * #Keywords: GtkTextView
  *
  * GtkTextBuffer lets you define your own tags that can influence
  * text formatting in a variety of ways. In this example, we show
diff --git a/demos/gtk-demo/overlay.c b/demos/gtk-demo/overlay.c
index e56d6fe36e..51d09bcb24 100644
--- a/demos/gtk-demo/overlay.c
+++ b/demos/gtk-demo/overlay.c
@@ -1,4 +1,5 @@
 /* Overlay/Interactive Overlay
+ * #Keywords: GtkOverlay
  *
  * Shows widgets in static positions over a main widget.
  *
diff --git a/demos/gtk-demo/overlay2.c b/demos/gtk-demo/overlay2.c
index 10b4476fb2..11f2e2a243 100644
--- a/demos/gtk-demo/overlay2.c
+++ b/demos/gtk-demo/overlay2.c
@@ -1,4 +1,5 @@
 /* Overlay/Decorative Overlay
+ * #Keywords: GtkOverlay
  *
  * Another example of an overlay with some decorative
  * and some interactive controls.
diff --git a/demos/gtk-demo/pagesetup.c b/demos/gtk-demo/pagesetup.c
index 09150a9eb7..1f58652b6e 100644
--- a/demos/gtk-demo/pagesetup.c
+++ b/demos/gtk-demo/pagesetup.c
@@ -1,4 +1,5 @@
 /* Printing/Page Setup
+ * #Keywords: GtkPageSetup
  *
  * GtkPageSetupUnixDialog can be used if page setup is needed
  * independent of a full printing dialog.
diff --git a/demos/gtk-demo/paint.c b/demos/gtk-demo/paint.c
index e95e25a5a1..147ddea753 100644
--- a/demos/gtk-demo/paint.c
+++ b/demos/gtk-demo/paint.c
@@ -1,4 +1,5 @@
 /* Paint
+ * #Keywords: GdkDrawingArea, GtkGesture
  *
  * Demonstrates practical handling of drawing tablets in a real world
  * usecase.
diff --git a/demos/gtk-demo/peg_solitaire.c b/demos/gtk-demo/peg_solitaire.c
index 70681c1f57..4fe4f11d44 100644
--- a/demos/gtk-demo/peg_solitaire.c
+++ b/demos/gtk-demo/peg_solitaire.c
@@ -1,4 +1,5 @@
 /* Peg Solitaire
+ * #Keywords: GtkGridView, game
  *
  * This demo demonstrates how to use drag'n'drop to implement peg solitaire.
  *
diff --git a/demos/gtk-demo/pickers.c b/demos/gtk-demo/pickers.c
index a5404d1e79..6a4da706e2 100644
--- a/demos/gtk-demo/pickers.c
+++ b/demos/gtk-demo/pickers.c
@@ -1,4 +1,6 @@
 /* Pickers
+ * #Keywords: GtkColorChooser, GtkFontChooser, GtkFileChooser,
+ * #Keywords: GtkApplicationChooser
  *
  * These widgets are mainly intended for use in preference dialogs.
  * They allow to select colors, fonts, files, directories and applications.
diff --git a/demos/gtk-demo/printing.c b/demos/gtk-demo/printing.c
index f095c59575..beef569f25 100644
--- a/demos/gtk-demo/printing.c
+++ b/demos/gtk-demo/printing.c
@@ -2,7 +2,6 @@
  *
  * GtkPrintOperation offers a simple API to support printing
  * in a cross-platform way.
- *
  */
 
 #include <math.h>
diff --git a/demos/gtk-demo/rotated_text.c b/demos/gtk-demo/rotated_text.c
index 88a81edaa8..4f2c3f9513 100644
--- a/demos/gtk-demo/rotated_text.c
+++ b/demos/gtk-demo/rotated_text.c
@@ -1,10 +1,10 @@
 /* Pango/Rotated Text
  *
  * This demo shows how to use PangoCairo to draw rotated and transformed
- * text.  The right pane shows a rotated GtkLabel widget.
+ * text. The right pane shows a rotated GtkLabel widget.
  *
  * In both cases, a custom PangoCairo shape renderer is installed to draw
- * a red heard using cairo drawing operations instead of the Unicode heart
+ * a red heart using cairo drawing operations instead of the Unicode heart
  * character.
  */
 
diff --git a/demos/gtk-demo/search_entry2.c b/demos/gtk-demo/search_entry2.c
index 29d417adf1..f6027196b7 100644
--- a/demos/gtk-demo/search_entry2.c
+++ b/demos/gtk-demo/search_entry2.c
@@ -1,9 +1,13 @@
 /* Entry/Delayed Search Entry
  *
- * GtkSearchEntry sets up GtkEntries ready for search. Search entries
- * have their "changed" signal delayed and should be used
- * when the searched operation is slow such as loads of entries
- * to search, or online searches.
+ * GtkSearchEntry provides an entry that is ready for search.
+ *
+ * Search entries have their "changed" signal delayed and should
+ * be used when the searched operation is slow such as loads of
+ * entries to search, or online searches.
+ *
+ * GtkSearchBar allows have a hidden search entry that 'springs
+ * into action' upon keyboard input.
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/shadertoy.c b/demos/gtk-demo/shadertoy.c
index cd8ba2bb41..2831baf51b 100644
--- a/demos/gtk-demo/shadertoy.c
+++ b/demos/gtk-demo/shadertoy.c
@@ -1,4 +1,5 @@
 /* OpenGL/Shadertoy
+ * #Keywords: GtkGLArea
  *
  * Generate pixels using a custom fragment shader.
  *
diff --git a/demos/gtk-demo/shortcut_triggers.c b/demos/gtk-demo/shortcut_triggers.c
index b84cb0354c..44b8839ca7 100644
--- a/demos/gtk-demo/shortcut_triggers.c
+++ b/demos/gtk-demo/shortcut_triggers.c
@@ -1,4 +1,5 @@
 /* Shortcuts
+ * #Keywords: GtkShortcutController
  *
  * GtkShortcut is the abstraction used by GTK to handle shortcuts from
  * keyboard or other input devices.
diff --git a/demos/gtk-demo/sliding_puzzle.c b/demos/gtk-demo/sliding_puzzle.c
index a91aa6c227..4d7e23f908 100644
--- a/demos/gtk-demo/sliding_puzzle.c
+++ b/demos/gtk-demo/sliding_puzzle.c
@@ -1,8 +1,8 @@
 /* Sliding Puzzle
+ * #Keywords: GdkPaintable, GdkGesture, game
  *
  * This demo demonstrates how to use gestures and paintables to create a
  * small sliding puzzle game.
- *
  */
 
 #include <gtk/gtk.h>
diff --git a/demos/gtk-demo/spinbutton.c b/demos/gtk-demo/spinbutton.c
index 97f25b857a..fda257af17 100644
--- a/demos/gtk-demo/spinbutton.c
+++ b/demos/gtk-demo/spinbutton.c
@@ -1,4 +1,5 @@
 /* Spin Buttons
+ * #Keywords: GtkEntry
  *
  * GtkSpinButton provides convenient ways to input data
  * that can be seen as a value in a range. The examples
diff --git a/demos/gtk-demo/spinner.c b/demos/gtk-demo/spinner.c
index 21c33441e9..925f02576e 100644
--- a/demos/gtk-demo/spinner.c
+++ b/demos/gtk-demo/spinner.c
@@ -1,7 +1,6 @@
 /* Spinner
  *
  * GtkSpinner allows to show that background activity is on-going.
- *
  */
 
 #include <glib/gi18n.h>
diff --git a/demos/gtk-demo/textscroll.c b/demos/gtk-demo/textscroll.c
index 338bb8b3cf..8bb62a8406 100644
--- a/demos/gtk-demo/textscroll.c
+++ b/demos/gtk-demo/textscroll.c
@@ -1,4 +1,5 @@
 /* Text View/Automatic Scrolling
+ * #Keywords: GtkTextView, GtkScrolledWindow
  *
  * This example demonstrates how to use the gravity of
  * GtkTextMarks to keep a text view scrolled to the bottom
diff --git a/demos/gtk-demo/transparent.c b/demos/gtk-demo/transparent.c
index 263806e814..7263feb718 100644
--- a/demos/gtk-demo/transparent.c
+++ b/demos/gtk-demo/transparent.c
@@ -1,4 +1,5 @@
 /* Overlay/Transparency
+ * #Keywords: GtkOverlay, GtkSnapshot
  *
  * Blur the background behind an overlay.
  */
diff --git a/demos/gtk-demo/video_player.c b/demos/gtk-demo/video_player.c
index f417870549..d2df677a5d 100644
--- a/demos/gtk-demo/video_player.c
+++ b/demos/gtk-demo/video_player.c
@@ -1,4 +1,6 @@
 /* Video Player
+ * #Keywords: GtkVideo, GtkMediaStream, GtkMediaFile, GdkPaintable
+ * #Keywords: GtkMediaControls
  *
  * This is a simple video player using just GTK widgets.
  */
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