Clean up .gitignore files

Since FLTK 1.5 building FLTK in the source tree is prohibited by our
CMake setup. Therefore all build artifacts are stored in the build
tree and don't need to be "ignored" in the source tree.
This simplifies the .gitignore files significantly.

There are some exceptions though, for instance .cxx and .h files
generated by fluid which might be created by a user/developer
executing fluid in the source tree.

6 files changed, 23 insertions, 189 deletions

diff --git a/.gitignore b/.gitignore
index dd99c69f8..694bbedec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@
 *.log
 *.o
 **/.DS_Store
+TAGS
 
 # CMake build artifacts if built in source - forbidden since FLTK 1.5.0.
 # However, the following artifacts would be created by an attempt to
@@ -18,15 +19,14 @@
 **/CMakeCache.txt
 **/CMakeFiles/
 
-# VS Code (Visual Studio Code) Editor is a user generated folder
-# that must not be committed
+# VS Code (Visual Studio Code) Editor is a frequently used editor whose
+# configuration is stored in '.vscode' folders
 
 .vscode/
 
-# default build folder `build` and more ...
+# default build folder `build` and some more special files ...
 
 /build
-/TAGS
 
 # /FL - this should not happen, but anyway ...
 
diff --git a/documentation/.gitignore b/documentation/.gitignore
index 0a9913da7..645b58a78 100644
--- a/documentation/.gitignore
+++ b/documentation/.gitignore
@@ -4,8 +4,3 @@
 # Note: since FLTK 1.5 building FLTK in-source is no longer allowed.
 #   Therefore we don't need to "ignore" generated files anymore
 #   because generated files are stored in the build tree.
-
-# /documentation/
-*.bck
-*.bak
-*.log
diff --git a/examples/.gitignore b/examples/.gitignore
index 2aaf8b559..763dce20b 100644
--- a/examples/.gitignore
+++ b/examples/.gitignore
@@ -1,52 +1,13 @@
 #
 # Files to be ignored by Git (do not commit)
 #
-# Note: *.exe will be ignored by means of ../.gitignore
+# Source files and headers generated by fluid:
 #
-animgifimage
-animgifimage-play
-animgifimage-resize
-animgifimage-simple
-browser-simple
-callbacks
-cairo-draw-x
-chart-simple
-draggable-group
-grid-simple
-howto-add_fd-and-popen
-howto-browser-with-icons
-howto-drag-and-drop
-howto-draw-an-x
-howto-flex-simple
-howto-menu-with-images
-howto-parse-args
-howto-remap-numpad-keyboard-keys
-howto-simple-svg
-howto-text-over-image-button
-menubar-add
-nativefilechooser-simple
-nativefilechooser-simple-app
-OpenGL3-glut-test
-OpenGL3test
-progress-simple
-shapedwindow
-simple-terminal
-SVG_File_Surface
-table-as-container
-table-simple
-table-sort
-table-spreadsheet
-table-spreadsheet-with-keyboard-nav
-table-with-keynav
-table-with-right-column-stretch-fit
-table-with-right-click-menu
-tabs-simple
-textdisplay-with-colors
-texteditor-simple
-texteditor-with-dynamic-colors
-tree-as-container
-tree-custom-draw-items
-tree-custom-sort
-tree-of-tables
-tree-simple
-wizard-simple
+# Note: these files *should* never exist (since FLTK 1.5.0) unless a user
+#   (developer) creates them manually by running fluid in the source tree.
+#
+# The following list can be generated using bash or another POSIX shell:
+#   $ LC_ALL=C; for f in *.fl; do b=`basename $f .fl`; echo $b.cxx; echo $b.h; done
+
+fluid-callback.cxx
+fluid-callback.h
diff --git a/fltk-options/.gitignore b/fltk-options/.gitignore
index bf43c199e..645b58a78 100644
--- a/fltk-options/.gitignore
+++ b/fltk-options/.gitignore
@@ -1,7 +1,6 @@
 #
 # Files to be ignored by Git (do not commit)
 #
-
-fltk-options
-fltk-options-shared
-fltk-options.app
+# Note: since FLTK 1.5 building FLTK in-source is no longer allowed.
+#   Therefore we don't need to "ignore" generated files anymore
+#   because generated files are stored in the build tree.
diff --git a/fluid/.gitignore b/fluid/.gitignore
index 023bc907c..7224d6c0c 100644
--- a/fluid/.gitignore
+++ b/fluid/.gitignore
@@ -2,13 +2,7 @@
 # Files to be ignored by Git (do not commit)
 #
 
-fluid
-fluid-shared
-TAGS
-fluid.app
-../pixmaps/*.bck
-
-# local documentation generation
+# local documentation generation (?)
 
 documentation/html/
 documentation/html-dev/
diff --git a/test/.gitignore b/test/.gitignore
index ea265dd43..8893e838a 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -1,128 +1,13 @@
 #
 # Files to be ignored by Git (do not commit)
 #
-# Note: *.exe will be ignored by means of ../.gitignore
+# Source files and headers generated by fluid:
 #
-
-# Windows/MSVC files and maybe others
-
-*.bck
-fltk*.dll
-fltk*.exp
-fltk*.lib
-*.ilk
-
-# Linux/Unix/macOS executables
-
-adjuster
-animated
-arc
-ask
-bitmap
-blocks
-boxtype
-browser
-button
-buttons
-cairo_test
-checkers
-clipboard
-clock
-colbrowser
-color_chooser
-contrast
-coordinates
-cube
-CubeView
-cursor
-curve
-demo
-device
-doublebuffer
-editor
-fast_slow
-file_chooser
-flex_demo
-flex_login
-fltk-versions
-fonts
-forms
-fractals
-fullscreen
-gl_overlay
-glpuzzle
-glut_test
-grid_alignment
-grid_buttons
-grid_dialog
-grid_login
-handle_events
-hello
-help_dialog
-icon
-iconize
-image
-inactive
-input
-input_choice
-keyboard
-label
-line_style
-line_style_docs
-list_visuals
-mandelbrot
-menubar
-message
-minimum
-native-filechooser
-navigation
-offscreen
-output
-overlay
-pack
-pixmap
-pixmap_browser
-preferences
-radio
-resize
-resizebox
-resize-example1
-resize-example2
-resize-example3a
-resize-example3b
-resize-example3c
-resize-example3d
-resize-example4a
-resize-example4b
-resize-example5a
-resize-example5b
-resize-example5c
-rotated_text
-scroll
-shape
-subwindow
-sudoku
-symbols
-table
-tabs
-terminal
-threads
-tile
-tiled_image
-tree
-twowin
-unittests
-utf8
-valuators
-windowfocus
-wizard
-
-# macOS binary files
-
-*.app
-
-# fluid generated source files and headers, generated using bash:
-# > for f in *.fl;do b=`basename $f .fl`;echo $b.cxx;echo $b.h;done
+# Note: these files *should* not exist (since FLTK 1.5.0) unless a user
+#   (developer) creates them manually by running fluid in the source tree.
+#
+# The following list can be generated using bash or another POSIX shell:
+#   $ LC_ALL=C; for f in *.fl; do b=`basename $f .fl`; echo $b.cxx; echo $b.h; done
 
 CubeViewUI.cxx
 CubeViewUI.h