Run clang-tidy’s modernize-redundant-void-arg pass.

61 files changed, 160 insertions, 160 deletions

diff --git a/src/extension/internal/bluredge.cpp b/src/extension/internal/bluredge.cpp
index 808023c7c..150dce195 100644
--- a/src/extension/internal/bluredge.cpp
+++ b/src/extension/internal/bluredge.cpp
@@ -125,7 +125,7 @@ BlurEdge::prefs_effect(Inkscape::Extension::Effect * module, Inkscape::UI::View:
 #include "clear-n_.h"
 
 void
-BlurEdge::init (void)
+BlurEdge::init ()
 {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/bluredge.h b/src/extension/internal/bluredge.h
index c30372d99..ceeace555 100644
--- a/src/extension/internal/bluredge.h
+++ b/src/extension/internal/bluredge.h
@@ -27,7 +27,7 @@ public:
     void effect(Inkscape::Extension::Effect *module, Inkscape::UI::View::View *document, Inkscape::Extension::Implementation::ImplementationDocumentCache * docCache) override;
     Gtk::Widget * prefs_effect(Inkscape::Extension::Effect * module, Inkscape::UI::View::View * view, sigc::signal<void> * changeSignal, Inkscape::Extension::Implementation::ImplementationDocumentCache * docCache) override;
 
-    static void init (void);
+    static void init ();
 };
 
 }; /* namespace Internal */
diff --git a/src/extension/internal/cairo-png-out.cpp b/src/extension/internal/cairo-png-out.cpp
index c3261fdce..6ff8943e8 100644
--- a/src/extension/internal/cairo-png-out.cpp
+++ b/src/extension/internal/cairo-png-out.cpp
@@ -103,7 +103,7 @@ void CairoRendererOutput::save(Inkscape::Extension::Output * /*mod*/, SPDocument
 	describes the data.
 */
 void
-CairoRendererOutput::init (void)
+CairoRendererOutput::init ()
 {
 	Inkscape::Extension::build_from_mem(
 		"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/cairo-ps-out.cpp b/src/extension/internal/cairo-ps-out.cpp
index 9815088de..16340fe2e 100644
--- a/src/extension/internal/cairo-ps-out.cpp
+++ b/src/extension/internal/cairo-ps-out.cpp
@@ -321,7 +321,7 @@ CairoEpsOutput::textToPath(Inkscape::Extension::Print * ext)
 	describes the data.
 */
 void
-CairoPsOutput::init (void)
+CairoPsOutput::init ()
 {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
@@ -363,7 +363,7 @@ CairoPsOutput::init (void)
 	describes the data.
 */
 void
-CairoEpsOutput::init (void)
+CairoEpsOutput::init ()
 {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/cairo-render-context.cpp b/src/extension/internal/cairo-render-context.cpp
index 969fff4f9..d420f5c2a 100644
--- a/src/extension/internal/cairo-render-context.cpp
+++ b/src/extension/internal/cairo-render-context.cpp
@@ -135,7 +135,7 @@ CairoRenderContext::CairoRenderContext(CairoRenderer *parent) :
 {
 }
 
-CairoRenderContext::~CairoRenderContext(void)
+CairoRenderContext::~CairoRenderContext()
 {
     for (std::map<gpointer, cairo_font_face_t *>::const_iterator iter = font_table.begin(); iter != font_table.end(); ++iter)
         font_data_free(iter->second);
@@ -152,17 +152,17 @@ void CairoRenderContext::font_data_free(gpointer data)
     }
 }
 
-CairoRenderer* CairoRenderContext::getRenderer(void) const
+CairoRenderer* CairoRenderContext::getRenderer() const
 {
     return _renderer;
 }
 
-CairoRenderState* CairoRenderContext::getCurrentState(void) const
+CairoRenderState* CairoRenderContext::getCurrentState() const
 {
     return _state;
 }
 
-CairoRenderState* CairoRenderContext::getParentState(void) const
+CairoRenderState* CairoRenderContext::getParentState() const
 {
     // if this is the root node just return it
     if (_state_stack.size() == 1) {
@@ -213,7 +213,7 @@ CairoRenderContext::cloneMe(double width, double height) const
     return new_context;
 }
 
-CairoRenderContext* CairoRenderContext::cloneMe(void) const
+CairoRenderContext* CairoRenderContext::cloneMe() const
 {
     g_assert( _is_valid );
 
@@ -416,7 +416,7 @@ void CairoRenderContext::setEPS(bool eps)
     _eps = eps;
 }
 
-unsigned int CairoRenderContext::getPSLevel(void)
+unsigned int CairoRenderContext::getPSLevel()
 {
     return _ps_level;
 }
@@ -436,7 +436,7 @@ void CairoRenderContext::setOmitText(bool omittext)
     _is_omittext = omittext;
 }
 
-bool CairoRenderContext::getOmitText(void)
+bool CairoRenderContext::getOmitText()
 {
     return _is_omittext;
 }
@@ -446,7 +446,7 @@ void CairoRenderContext::setFilterToBitmap(bool filtertobitmap)
     _is_filtertobitmap = filtertobitmap;
 }
 
-bool CairoRenderContext::getFilterToBitmap(void)
+bool CairoRenderContext::getFilterToBitmap()
 {
     return _is_filtertobitmap;
 }
@@ -456,13 +456,13 @@ void CairoRenderContext::setBitmapResolution(int resolution)
     _bitmapresolution = resolution;
 }
 
-int CairoRenderContext::getBitmapResolution(void)
+int CairoRenderContext::getBitmapResolution()
 {
     return _bitmapresolution;
 }
 
 cairo_surface_t*
-CairoRenderContext::getSurface(void)
+CairoRenderContext::getSurface()
 {
     g_assert( _is_valid );
 
@@ -494,7 +494,7 @@ CairoRenderContext::setRenderMode(CairoRenderMode mode)
 }
 
 CairoRenderContext::CairoRenderMode
-CairoRenderContext::getRenderMode(void) const
+CairoRenderContext::getRenderMode() const
 {
     return _render_mode;
 }
@@ -514,12 +514,12 @@ CairoRenderContext::setClipMode(CairoClipMode mode)
 }
 
 CairoRenderContext::CairoClipMode
-CairoRenderContext::getClipMode(void) const
+CairoRenderContext::getClipMode() const
 {
     return _clip_mode;
 }
 
-CairoRenderState* CairoRenderContext::_createState(void)
+CairoRenderState* CairoRenderContext::_createState()
 {
     CairoRenderState *state = static_cast<CairoRenderState*>(g_try_malloc(sizeof(CairoRenderState)));
     g_assert( state != nullptr );
@@ -536,7 +536,7 @@ CairoRenderState* CairoRenderContext::_createState(void)
     return state;
 }
 
-void CairoRenderContext::pushLayer(void)
+void CairoRenderContext::pushLayer()
 {
     g_assert( _is_valid );
 
@@ -553,7 +553,7 @@ void CairoRenderContext::pushLayer(void)
 }
 
 void
-CairoRenderContext::popLayer(void)
+CairoRenderContext::popLayer()
 {
     g_assert( _is_valid );
 
@@ -1007,7 +1007,7 @@ Geom::Affine CairoRenderContext::getParentTransform() const
     return parent_state->transform;
 }
 
-void CairoRenderContext::pushState(void)
+void CairoRenderContext::pushState()
 {
     g_assert( _is_valid );
 
@@ -1020,7 +1020,7 @@ void CairoRenderContext::pushState(void)
     _state = new_state;
 }
 
-void CairoRenderContext::popState(void)
+void CairoRenderContext::popState()
 {
     g_assert( _is_valid );
 
diff --git a/src/extension/internal/cairo-render-context.h b/src/extension/internal/cairo-render-context.h
index 2cefb297d..d58c78c73 100644
--- a/src/extension/internal/cairo-render-context.h
+++ b/src/extension/internal/cairo-render-context.h
@@ -70,12 +70,12 @@ struct CairoRenderState {
 class CairoRenderContext {
     friend class CairoRenderer;
 public:
-    CairoRenderContext *cloneMe(void) const;
+    CairoRenderContext *cloneMe() const;
     CairoRenderContext *cloneMe(double width, double height) const;
     bool finish(bool finish_surface = true);
 
-    CairoRenderer *getRenderer(void) const;
-    cairo_t *getCairoContext(void) const;
+    CairoRenderer *getRenderer() const;
+    cairo_t *getCairoContext() const;
 
     enum CairoRenderMode {
         RENDER_MODE_NORMAL,
@@ -95,47 +95,47 @@ public:
 
     void setPSLevel(unsigned int level);
     void setEPS(bool eps);
-    unsigned int getPSLevel(void);
+    unsigned int getPSLevel();
     void setPDFLevel(unsigned int level);
     void setTextToPath(bool texttopath);
-    bool getTextToPath(void);
+    bool getTextToPath();
     void setOmitText(bool omittext);
-    bool getOmitText(void);
+    bool getOmitText();
     void setFilterToBitmap(bool filtertobitmap);
-    bool getFilterToBitmap(void);
+    bool getFilterToBitmap();
     void setBitmapResolution(int resolution);
-    int getBitmapResolution(void);
+    int getBitmapResolution();
 
     /** Creates the cairo_surface_t for the context with the
     given width, height and with the currently set target
     surface type. */
     bool setupSurface(double width, double height);
 
-    cairo_surface_t *getSurface(void);
+    cairo_surface_t *getSurface();
 
     /** Saves the contents of the context to a PNG file. */
     bool saveAsPng(const char *file_name);
 
     /** On targets supporting multiple pages, sends subsequent rendering to a new page*/
-    void newPage(void);
+    void newPage();
 
     /* Render/clip mode setting/query */
     void setRenderMode(CairoRenderMode mode);
-    CairoRenderMode getRenderMode(void) const;
+    CairoRenderMode getRenderMode() const;
     void setClipMode(CairoClipMode mode);
-    CairoClipMode getClipMode(void) const;
+    CairoClipMode getClipMode() const;
 
     void addPathVector(Geom::PathVector const &pv);
     void setPathVector(Geom::PathVector const &pv);
 
-    void pushLayer(void);
-    void popLayer(void);
+    void pushLayer();
+    void popLayer();
 
     /* Graphics state manipulation */
-    void pushState(void);
-    void popState(void);
-    CairoRenderState *getCurrentState(void) const;
-    CairoRenderState *getParentState(void) const;
+    void pushState();
+    void popState();
+    CairoRenderState *getCurrentState() const;
+    CairoRenderState *getParentState() const;
     void setStateForStyle(SPStyle const *style);
 
     void transform(Geom::Affine const &transform);
@@ -165,7 +165,7 @@ public:
 
 protected:
     CairoRenderContext(CairoRenderer *renderer);
-    virtual ~CairoRenderContext(void);
+    virtual ~CairoRenderContext();
 
     enum CairoOmitTextPageState {
         EMPTY,
@@ -223,13 +223,13 @@ protected:
     void _concatTransform(cairo_t *cr, double xx, double yx, double xy, double yy, double x0, double y0);
     void _concatTransform(cairo_t *cr, Geom::Affine const &transform);
 
-    void _prepareRenderGraphic(void);
-    void _prepareRenderText(void);
+    void _prepareRenderGraphic();
+    void _prepareRenderText();
 
     std::map<gpointer, cairo_font_face_t *> font_table;
     static void font_data_free(gpointer data);
 
-    CairoRenderState *_createState(void);
+    CairoRenderState *_createState();
 };
 
 }  /* namespace Internal */
diff --git a/src/extension/internal/cairo-renderer-pdf-out.cpp b/src/extension/internal/cairo-renderer-pdf-out.cpp
index 333c0eb42..3ad891ed1 100644
--- a/src/extension/internal/cairo-renderer-pdf-out.cpp
+++ b/src/extension/internal/cairo-renderer-pdf-out.cpp
@@ -238,7 +238,7 @@ CairoRendererPdfOutput::save(Inkscape::Extension::Output *mod, SPDocument *doc,
 	describes the data.
 */
 void
-CairoRendererPdfOutput::init (void)
+CairoRendererPdfOutput::init ()
 {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/cairo-renderer.cpp b/src/extension/internal/cairo-renderer.cpp
index c06119391..b21505431 100644
--- a/src/extension/internal/cairo-renderer.cpp
+++ b/src/extension/internal/cairo-renderer.cpp
@@ -103,7 +103,7 @@ namespace Internal {
 CairoRenderer::CairoRenderer(void)
 = default;
 
-CairoRenderer::~CairoRenderer(void)
+CairoRenderer::~CairoRenderer()
 {
     /* restore default signal handling for SIGPIPE */
 #if !defined(_WIN32) && !defined(__WIN32__)
@@ -114,7 +114,7 @@ CairoRenderer::~CairoRenderer(void)
 }
 
 CairoRenderContext*
-CairoRenderer::createContext(void)
+CairoRenderer::createContext()
 {
     CairoRenderContext *new_context = new CairoRenderContext(this);
     g_assert( new_context != nullptr );
diff --git a/src/extension/internal/cairo-renderer.h b/src/extension/internal/cairo-renderer.h
index b069e5bfe..03ffe2a1c 100644
--- a/src/extension/internal/cairo-renderer.h
+++ b/src/extension/internal/cairo-renderer.h
@@ -39,10 +39,10 @@ class CairoRenderContext;
 
 class CairoRenderer {
 public:
-    CairoRenderer(void);
-    virtual ~CairoRenderer(void);
+    CairoRenderer();
+    virtual ~CairoRenderer();
     
-    CairoRenderContext *createContext(void);
+    CairoRenderContext *createContext();
     void destroyContext(CairoRenderContext *ctx);
 
     void setStateForItem(CairoRenderContext *ctx, SPItem const *item);
diff --git a/src/extension/internal/cdr-input.cpp b/src/extension/internal/cdr-input.cpp
index 5f42c1a94..7848927ca 100644
--- a/src/extension/internal/cdr-input.cpp
+++ b/src/extension/internal/cdr-input.cpp
@@ -304,7 +304,7 @@ SPDocument *CdrInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * u
 
 #include "clear-n_.h"
 
-void CdrInput::init(void)
+void CdrInput::init()
 {
     /* CDR */
      Inkscape::Extension::build_from_mem(
diff --git a/src/extension/internal/cdr-input.h b/src/extension/internal/cdr-input.h
index 25b9e8425..a0fc69cd6 100644
--- a/src/extension/internal/cdr-input.h
+++ b/src/extension/internal/cdr-input.h
@@ -32,7 +32,7 @@ class CdrInput : public Inkscape::Extension::Implementation::Implementation {
 public:
      SPDocument *open( Inkscape::Extension::Input *mod,
                        const gchar *uri ) override;
-     static void         init( void );
+     static void         init( );
 
 };
 
diff --git a/src/extension/internal/emf-inout.cpp b/src/extension/internal/emf-inout.cpp
index e34d73cca..fa15f8eb5 100644
--- a/src/extension/internal/emf-inout.cpp
+++ b/src/extension/internal/emf-inout.cpp
@@ -65,13 +65,13 @@ static uint32_t ICMmode = 0;  // not used yet, but code to read it from EMF impl
 static uint32_t BLTmode = 0;
 float           faraway = 10000000; // used in "exclude" clips, hopefully well outside any real drawing!
 
-Emf::Emf (void) // The null constructor
+Emf::Emf () // The null constructor
 {
     return;
 }
 
 
-Emf::~Emf (void) //The destructor
+Emf::~Emf () //The destructor
 {
     return;
 }
@@ -3609,7 +3609,7 @@ Emf::open( Inkscape::Extension::Input * /*mod*/, const gchar *uri )
 
 
 void
-Emf::init (void)
+Emf::init ()
 {
     /* EMF in */
     Inkscape::Extension::build_from_mem(
diff --git a/src/extension/internal/emf-inout.h b/src/extension/internal/emf-inout.h
index bef58b612..8c732404c 100644
--- a/src/extension/internal/emf-inout.h
+++ b/src/extension/internal/emf-inout.h
@@ -190,7 +190,7 @@ public:
     SPDocument *open( Inkscape::Extension::Input *mod,
                                 const gchar *uri ) override;
 
-    static void init(void);//Initialize the class
+    static void init();//Initialize the class
 
 private:
 
diff --git a/src/extension/internal/emf-print.cpp b/src/extension/internal/emf-print.cpp
index add2f0d37..9320e3ce9 100644
--- a/src/extension/internal/emf-print.cpp
+++ b/src/extension/internal/emf-print.cpp
@@ -2181,7 +2181,7 @@ unsigned int PrintEmf::text(Inkscape::Extension::Print * /*mod*/, char const *te
     return 0;
 }
 
-void PrintEmf::init(void)
+void PrintEmf::init()
 {
     _load_ppt_fontfix_data();
 
diff --git a/src/extension/internal/emf-print.h b/src/extension/internal/emf-print.h
index 43267dd2d..205db202e 100644
--- a/src/extension/internal/emf-print.h
+++ b/src/extension/internal/emf-print.h
@@ -64,7 +64,7 @@ public:
     unsigned int text(Inkscape::Extension::Print *module, char const *text,
                               Geom::Point const &p, SPStyle const *style) override;
 
-    static void init (void);
+    static void init ();
 protected:
     static void  smuggle_adxkyrtl_out(const char *string, uint32_t **adx, double *ky, int *rtl, int *ndx, float scale);
 
diff --git a/src/extension/internal/filter/bevels.h b/src/extension/internal/filter/bevels.h
index 4c2ddc719..3670fc6c5 100644
--- a/src/extension/internal/filter/bevels.h
+++ b/src/extension/internal/filter/bevels.h
@@ -47,7 +47,7 @@ public:
     DiffuseLight ( ) : Filter() { };
     ~DiffuseLight ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Diffuse Light") "</name>\n"
@@ -127,7 +127,7 @@ public:
     MatteJelly ( ) : Filter() { };
     ~MatteJelly ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Matte Jelly") "</name>\n"
@@ -211,7 +211,7 @@ public:
     SpecularLight ( ) : Filter() { };
     ~SpecularLight ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Specular Light") "</name>\n"
diff --git a/src/extension/internal/filter/blurs.h b/src/extension/internal/filter/blurs.h
index c99b9efac..ac87bc539 100644
--- a/src/extension/internal/filter/blurs.h
+++ b/src/extension/internal/filter/blurs.h
@@ -48,7 +48,7 @@ public:
     Blur ( ) : Filter() { };
     ~Blur ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Blur") "</name>\n"
@@ -119,7 +119,7 @@ public:
     CleanEdges ( ) : Filter() { };
     ~CleanEdges ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Clean Edges") "</name>\n"
@@ -179,7 +179,7 @@ public:
     CrossBlur ( ) : Filter() { };
     ~CrossBlur ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Cross Blur") "</name>\n"
@@ -254,7 +254,7 @@ public:
     Feather ( ) : Filter() { };
     ~Feather ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Feather") "</name>\n"
@@ -319,7 +319,7 @@ public:
     ImageBlur ( ) : Filter() { };
     ~ImageBlur ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Out of Focus") "</name>\n"
diff --git a/src/extension/internal/filter/bumps.h b/src/extension/internal/filter/bumps.h
index 0eaee7a5f..b8e887c26 100644
--- a/src/extension/internal/filter/bumps.h
+++ b/src/extension/internal/filter/bumps.h
@@ -74,7 +74,7 @@ public:
     Bump ( ) : Filter() { };
     ~Bump ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Bump") "</name>\n"
@@ -303,7 +303,7 @@ public:
     WaxBump ( ) : Filter() { };
     ~WaxBump ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Wax Bump") "</name>\n"
diff --git a/src/extension/internal/filter/color.h b/src/extension/internal/filter/color.h
index ae6bc718c..fc1948853 100644
--- a/src/extension/internal/filter/color.h
+++ b/src/extension/internal/filter/color.h
@@ -68,7 +68,7 @@ public:
     Brilliance ( ) : Filter() { };
     ~Brilliance ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Brilliance") "</name>\n"
@@ -148,7 +148,7 @@ public:
     ChannelPaint ( ) : Filter() { };
     ~ChannelPaint ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
     
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Channel Painting") "</name>\n"
@@ -249,7 +249,7 @@ public:
     ColorBlindness ( ) : Filter() { };
     ~ColorBlindness ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
     
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Color Blindness") "</name>\n"
@@ -324,7 +324,7 @@ public:
     ColorShift ( ) : Filter() { };
     ~ColorShift ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Color Shift") "</name>\n"
@@ -387,7 +387,7 @@ public:
     Colorize ( ) : Filter() { };
     ~Colorize ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
                 "<name>" N_("Colorize") "</name>\n"
@@ -494,7 +494,7 @@ public:
     ComponentTransfer ( ) : Filter() { };
     ~ComponentTransfer ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Component Transfer") "</name>\n"
@@ -579,7 +579,7 @@ public:
     Duochrome ( ) : Filter() { };
     ~Duochrome ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Duochrome") "</name>\n"
@@ -704,7 +704,7 @@ public:
     ExtractChannel ( ) : Filter() { };
     ~ExtractChannel ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Extract Channel") "</name>\n"
@@ -810,7 +810,7 @@ public:
     FadeToBW ( ) : Filter() { };
     ~FadeToBW ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Fade to Black or White") "</name>\n"
@@ -889,7 +889,7 @@ public:
     Greyscale ( ) : Filter() { };
     ~Greyscale ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Greyscale") "</name>\n"
@@ -975,7 +975,7 @@ public:
     Invert ( ) : Filter() { };
     ~Invert ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Invert") "</name>\n"
@@ -1110,7 +1110,7 @@ public:
     Lighting ( ) : Filter() { };
     ~Lighting ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Lighting") "</name>\n"
@@ -1181,7 +1181,7 @@ public:
     LightnessContrast ( ) : Filter() { };
     ~LightnessContrast ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Lightness-Contrast") "</name>\n"
@@ -1260,7 +1260,7 @@ public:
     NudgeRGB ( ) : Filter() { };
     ~NudgeRGB ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Nudge RGB") "</name>\n"
@@ -1372,7 +1372,7 @@ public:
     NudgeCMY ( ) : Filter() { };
     ~NudgeCMY ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Nudge CMY") "</name>\n"
@@ -1478,7 +1478,7 @@ public:
     Quadritone ( ) : Filter() { };
     ~Quadritone ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Quadritone Fantasy") "</name>\n"
@@ -1561,7 +1561,7 @@ public:
     SimpleBlend ( ) : Filter() { };
     ~SimpleBlend ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
     
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Simple blend") "</name>\n"
@@ -1647,7 +1647,7 @@ public:
     Solarize ( ) : Filter() { };
     ~Solarize ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Solarize") "</name>\n"
@@ -1734,7 +1734,7 @@ public:
     Tritone ( ) : Filter() { };
     ~Tritone ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Tritone") "</name>\n"
diff --git a/src/extension/internal/filter/distort.h b/src/extension/internal/filter/distort.h
index f1654d075..f677e334a 100644
--- a/src/extension/internal/filter/distort.h
+++ b/src/extension/internal/filter/distort.h
@@ -61,7 +61,7 @@ public:
     FeltFeather ( ) : Filter() { };
     ~FeltFeather ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Felt Feather") "</name>\n"
@@ -184,7 +184,7 @@ public:
     Roughen ( ) : Filter() { };
     ~Roughen ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Roughen") "</name>\n"
diff --git a/src/extension/internal/filter/filter-all.cpp b/src/extension/internal/filter/filter-all.cpp
index 83da6ea2b..3f1d2fb97 100644
--- a/src/extension/internal/filter/filter-all.cpp
+++ b/src/extension/internal/filter/filter-all.cpp
@@ -29,7 +29,7 @@ namespace Filter {
 
 
 void
-Filter::filters_all (void )
+Filter::filters_all ( )
 {
 	// Here come the filters which are coded in C++ in order to present a parameters dialog
 
diff --git a/src/extension/internal/filter/filter-file.cpp b/src/extension/internal/filter/filter-file.cpp
index 241f0f52c..023643deb 100644
--- a/src/extension/internal/filter/filter-file.cpp
+++ b/src/extension/internal/filter/filter-file.cpp
@@ -62,7 +62,7 @@ filters_load_file (Glib::ustring filename, gchar * menuname)
 	return;
 }
 
-void Filter::filters_all_files(void)
+void Filter::filters_all_files()
 {
     for(auto &filename: get_filenames(USER, FILTERS, {".svg"})) {
         filters_load_file(filename, _("Personal"));
@@ -78,14 +78,14 @@ void Filter::filters_all_files(void)
 class mywriter : public Inkscape::IO::BasicWriter {
 	Glib::ustring _str;
 public:
-	void close(void) override;
-	void flush(void) override;
+	void close() override;
+	void flush() override;
 	void put (gunichar ch) override;
-	gchar const * c_str (void) { return _str.c_str(); }
+	gchar const * c_str () { return _str.c_str(); }
 };
 
-void mywriter::close (void) { return; }
-void mywriter::flush (void) { return; }
+void mywriter::close () { return; }
+void mywriter::flush () { return; }
 void mywriter::put (gunichar ch) { _str += ch; }
 
 
diff --git a/src/extension/internal/filter/filter.cpp b/src/extension/internal/filter/filter.cpp
index 8e32bc05d..b869561cd 100644
--- a/src/extension/internal/filter/filter.cpp
+++ b/src/extension/internal/filter/filter.cpp
@@ -37,7 +37,7 @@ Filter::Filter(gchar const * filter) :
 	return;
 }
 
-Filter::~Filter (void) {
+Filter::~Filter () {
 	if (_filter != nullptr) {
 		_filter = nullptr;
 	}
diff --git a/src/extension/internal/filter/filter.h b/src/extension/internal/filter/filter.h
index 3a5b8a811..ba9f63d04 100644
--- a/src/extension/internal/filter/filter.h
+++ b/src/extension/internal/filter/filter.h
@@ -49,10 +49,10 @@ public:
 	void effect(Inkscape::Extension::Effect *module, Inkscape::UI::View::View *document, Inkscape::Extension::Implementation::ImplementationDocumentCache * docCache) override;
 
 	static void filter_init(gchar const * id, gchar const * name, gchar const * submenu, gchar const * tip, gchar const * filter);
-	static void filters_all(void);
+	static void filters_all();
 
 	/* File loader related */
-	static void filters_all_files(void);
+	static void filters_all_files();
 	static void filters_load_node(Inkscape::XML::Node * node, gchar * menuname);
 
 };
diff --git a/src/extension/internal/filter/image.h b/src/extension/internal/filter/image.h
index 592e41b9f..2c715768c 100644
--- a/src/extension/internal/filter/image.h
+++ b/src/extension/internal/filter/image.h
@@ -43,7 +43,7 @@ public:
     EdgeDetect ( ) : Filter() { };
     ~EdgeDetect ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Edge Detect") "</name>\n"
diff --git a/src/extension/internal/filter/morphology.h b/src/extension/internal/filter/morphology.h
index 905e71e67..49df9c2a6 100644
--- a/src/extension/internal/filter/morphology.h
+++ b/src/extension/internal/filter/morphology.h
@@ -52,7 +52,7 @@ public:
     Crosssmooth ( ) : Filter() { };
     ~Crosssmooth ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Cross-smooth") "</name>\n"
@@ -160,7 +160,7 @@ public:
     Outline ( ) : Filter() { };
     ~Outline ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Outline") "</name>\n"
diff --git a/src/extension/internal/filter/overlays.h b/src/extension/internal/filter/overlays.h
index e0f78be9c..b451ec65d 100644
--- a/src/extension/internal/filter/overlays.h
+++ b/src/extension/internal/filter/overlays.h
@@ -50,7 +50,7 @@ public:
     NoiseFill ( ) : Filter() { };
     ~NoiseFill ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Noise Fill") "</name>\n"
diff --git a/src/extension/internal/filter/paint.h b/src/extension/internal/filter/paint.h
index aae71fcf3..afa3b5b12 100644
--- a/src/extension/internal/filter/paint.h
+++ b/src/extension/internal/filter/paint.h
@@ -65,7 +65,7 @@ public:
     Chromolitho ( ) : Filter() { };
     ~Chromolitho ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Chromolitho") "</name>\n"
@@ -226,7 +226,7 @@ public:
     CrossEngraving ( ) : Filter() { };
     ~CrossEngraving ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Cross Engraving") "</name>\n"
@@ -325,7 +325,7 @@ public:
     Drawing ( ) : Filter() { };
     ~Drawing ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Drawing") "</name>\n"
@@ -488,7 +488,7 @@ public:
     Electrize ( ) : Filter() { };
     ~Electrize ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Electrize") "</name>\n"
@@ -578,7 +578,7 @@ public:
     NeonDraw ( ) : Filter() { };
     ~NeonDraw ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Neon Draw") "</name>\n"
@@ -681,7 +681,7 @@ public:
     PointEngraving ( ) : Filter() { };
     ~PointEngraving ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Point Engraving") "</name>\n"
@@ -844,7 +844,7 @@ public:
     Posterize ( ) : Filter() { };
     ~Posterize ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Poster Paint") "</name>\n"
@@ -967,7 +967,7 @@ public:
     PosterizeBasic ( ) : Filter() { };
     ~PosterizeBasic ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Posterize Basic") "</name>\n"
diff --git a/src/extension/internal/filter/protrusions.h b/src/extension/internal/filter/protrusions.h
index 0abac91e7..8df7924ca 100644
--- a/src/extension/internal/filter/protrusions.h
+++ b/src/extension/internal/filter/protrusions.h
@@ -42,7 +42,7 @@ public:
 	~Snow ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
 public:
-	static void init (void) {
+	static void init () {
 		Inkscape::Extension::build_from_mem(
 			"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
 				"<name>" N_("Snow Crest") "</name>\n"
diff --git a/src/extension/internal/filter/shadows.h b/src/extension/internal/filter/shadows.h
index 19cfdaba7..18ee53158 100644
--- a/src/extension/internal/filter/shadows.h
+++ b/src/extension/internal/filter/shadows.h
@@ -51,7 +51,7 @@ public:
     ColorizableDropShadow ( ) : Filter() { };
     ~ColorizableDropShadow ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Drop Shadow") "</name>\n"
diff --git a/src/extension/internal/filter/textures.h b/src/extension/internal/filter/textures.h
index 3340643a5..d7108c552 100644
--- a/src/extension/internal/filter/textures.h
+++ b/src/extension/internal/filter/textures.h
@@ -56,7 +56,7 @@ public:
 	~InkBlot ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
 public:
-	static void init (void) {
+	static void init () {
 		Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
             "<name>" N_("Ink Blot") "</name>\n"
diff --git a/src/extension/internal/filter/transparency.h b/src/extension/internal/filter/transparency.h
index 1239c1fac..68388fc06 100644
--- a/src/extension/internal/filter/transparency.h
+++ b/src/extension/internal/filter/transparency.h
@@ -47,7 +47,7 @@ public:
     Blend ( ) : Filter() { };
     ~Blend ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Blend") "</name>\n"
@@ -124,7 +124,7 @@ public:
     ChannelTransparency ( ) : Filter() { };
     ~ChannelTransparency ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
     
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Channel Transparency") "</name>\n"
@@ -199,7 +199,7 @@ public:
     LightEraser ( ) : Filter() { };
     ~LightEraser ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
     
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Light Eraser") "</name>\n"
@@ -273,7 +273,7 @@ public:
     Opacity ( ) : Filter() { };
     ~Opacity ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
     
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Opacity") "</name>\n"
@@ -335,7 +335,7 @@ public:
     Silhouette ( ) : Filter() { };
     ~Silhouette ( ) override { if (_filter != nullptr) g_free((void *)_filter); return; }
 
-    static void init (void) {
+    static void init () {
         Inkscape::Extension::build_from_mem(
             "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
               "<name>" N_("Silhouette") "</name>\n"
diff --git a/src/extension/internal/gdkpixbuf-input.cpp b/src/extension/internal/gdkpixbuf-input.cpp
index ba90c747e..02ca5af1a 100644
--- a/src/extension/internal/gdkpixbuf-input.cpp
+++ b/src/extension/internal/gdkpixbuf-input.cpp
@@ -163,7 +163,7 @@ GdkpixbufInput::open(Inkscape::Extension::Input *mod, char const *uri)
 #include "clear-n_.h"
 
 void
-GdkpixbufInput::init(void)
+GdkpixbufInput::init()
 {
     static std::vector< Gdk::PixbufFormat > formatlist = Gdk::Pixbuf::get_formats();
     for (auto i: formatlist) {
diff --git a/src/extension/internal/gimpgrad.cpp b/src/extension/internal/gimpgrad.cpp
index 1323ca7bc..bb6748c9c 100644
--- a/src/extension/internal/gimpgrad.cpp
+++ b/src/extension/internal/gimpgrad.cpp
@@ -265,7 +265,7 @@ error:
 
 #include "clear-n_.h"
 
-void GimpGrad::init (void)
+void GimpGrad::init ()
 {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/grid.cpp b/src/extension/internal/grid.cpp
index 5347eaa86..9e05ecd29 100644
--- a/src/extension/internal/grid.cpp
+++ b/src/extension/internal/grid.cpp
@@ -151,7 +151,7 @@ public:
         return;
     };
 
-    void val_changed (void);
+    void val_changed ();
 }; /* class PrefAdjustment */
 
 /** \brief  A function to respond to the value_changed signal from the
@@ -161,7 +161,7 @@ public:
     it to the parameter.  Very simple, but yet beautiful.
 */
 void
-PrefAdjustment::val_changed (void)
+PrefAdjustment::val_changed ()
 {
     // std::cout << "Value Changed to: " << this->get_value() << std::endl;
     _ext->set_param_float(_pref, this->get_value());
@@ -191,7 +191,7 @@ Grid::prefs_effect(Inkscape::Extension::Effect *module, Inkscape::UI::View::View
 #include "clear-n_.h"
 
 void
-Grid::init (void)
+Grid::init ()
 {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/grid.h b/src/extension/internal/grid.h
index 7d25c7b20..950615ce2 100644
--- a/src/extension/internal/grid.h
+++ b/src/extension/internal/grid.h
@@ -27,7 +27,7 @@ public:
     void effect(Inkscape::Extension::Effect *module, Inkscape::UI::View::View *document, Inkscape::Extension::Implementation::ImplementationDocumentCache * docCache) override;
     Gtk::Widget * prefs_effect(Inkscape::Extension::Effect *module, Inkscape::UI::View::View * view, sigc::signal<void> * changeSignal, Inkscape::Extension::Implementation::ImplementationDocumentCache * docCache) override;
 
-    static void init (void);
+    static void init ();
 };
 
 }; /* namespace Internal */
diff --git a/src/extension/internal/javafx-out.cpp b/src/extension/internal/javafx-out.cpp
index 0185e07cd..ad8fa855d 100644
--- a/src/extension/internal/javafx-out.cpp
+++ b/src/extension/internal/javafx-out.cpp
@@ -101,7 +101,7 @@ static double effective_opacity(const SPStyle *style)
 //# OUTPUT FORMATTING
 //########################################################################
 
-JavaFXOutput::JavaFXOutput(void) :
+JavaFXOutput::JavaFXOutput() :
     name(),
     outbuf(),
     foutbuf(),
diff --git a/src/extension/internal/javafx-out.h b/src/extension/internal/javafx-out.h
index f9d209b86..f6035f7c3 100644
--- a/src/extension/internal/javafx-out.h
+++ b/src/extension/internal/javafx-out.h
@@ -40,7 +40,7 @@ class JavaFXOutput : public Inkscape::Extension::Implementation::Implementation
 {
 
 public:
-    JavaFXOutput (void);
+    JavaFXOutput ();
     
     /**
      * Our internal String definition
@@ -62,7 +62,7 @@ public:
     /**
      * Inkscape runtime startup call.
      */
-	static void init(void);
+	static void init();
 	
     /**
      * Reset variables to initial state
diff --git a/src/extension/internal/latex-pstricks-out.cpp b/src/extension/internal/latex-pstricks-out.cpp
index e1da0bab6..9c509f7d0 100644
--- a/src/extension/internal/latex-pstricks-out.cpp
+++ b/src/extension/internal/latex-pstricks-out.cpp
@@ -28,12 +28,12 @@ namespace Inkscape {
 namespace Extension {
 namespace Internal {
 
-LatexOutput::LatexOutput (void) // The null constructor
+LatexOutput::LatexOutput () // The null constructor
 {
     return;
 }
 
-LatexOutput::~LatexOutput (void) //The destructor
+LatexOutput::~LatexOutput () //The destructor
 {
     return;
 }
@@ -87,7 +87,7 @@ void LatexOutput::save(Inkscape::Extension::Output * /*mod2*/, SPDocument *doc,
     describes the data.
 */
 void
-LatexOutput::init (void)
+LatexOutput::init ()
 {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/latex-pstricks-out.h b/src/extension/internal/latex-pstricks-out.h
index 842a52655..b34d5c321 100644
--- a/src/extension/internal/latex-pstricks-out.h
+++ b/src/extension/internal/latex-pstricks-out.h
@@ -30,7 +30,7 @@ public:
               SPDocument *doc,
               gchar const *filename) override;
 
-    static void init(void);//Initialize the class
+    static void init();//Initialize the class
 };
 
 } } }  /* namespace Inkscape, Extension, Implementation */
diff --git a/src/extension/internal/latex-pstricks.cpp b/src/extension/internal/latex-pstricks.cpp
index 226f915aa..1d09fff82 100644
--- a/src/extension/internal/latex-pstricks.cpp
+++ b/src/extension/internal/latex-pstricks.cpp
@@ -36,14 +36,14 @@ namespace Inkscape {
 namespace Extension {
 namespace Internal {
 
-PrintLatex::PrintLatex (void):
+PrintLatex::PrintLatex ():
     _width(0),
     _height(0),
     _stream(nullptr)
 {
 }
 
-PrintLatex::~PrintLatex (void)
+PrintLatex::~PrintLatex ()
 {
     if (_stream) fclose(_stream);
 
@@ -322,7 +322,7 @@ PrintLatex::textToPath(Inkscape::Extension::Print * ext)
 
 #include "clear-n_.h"
 
-void PrintLatex::init(void)
+void PrintLatex::init()
 {
     /* SVG in */
     Inkscape::Extension::build_from_mem(
diff --git a/src/extension/internal/latex-pstricks.h b/src/extension/internal/latex-pstricks.h
index 9b9519c55..fe9472b68 100644
--- a/src/extension/internal/latex-pstricks.h
+++ b/src/extension/internal/latex-pstricks.h
@@ -37,8 +37,8 @@ class PrintLatex : public Inkscape::Extension::Implementation::Implementation {
     void print_2geomcurve(SVGOStringStream &os, Geom::Curve const & c );
 
 public:
-        PrintLatex (void);
-        ~PrintLatex (void) override;
+        PrintLatex ();
+        ~PrintLatex () override;
 
         /* Print functions */
         unsigned int setup (Inkscape::Extension::Print * module) override;
@@ -61,7 +61,7 @@ public:
         unsigned int comment(Inkscape::Extension::Print *module, const char * comment) override;
         bool textToPath (Inkscape::Extension::Print * ext) override;
 
-        static void init (void);
+        static void init ();
 };
 
 }  /* namespace Internal */
diff --git a/src/extension/internal/latex-text-renderer.cpp b/src/extension/internal/latex-text-renderer.cpp
index fe9e78bf2..f346a304a 100644
--- a/src/extension/internal/latex-text-renderer.cpp
+++ b/src/extension/internal/latex-text-renderer.cpp
@@ -111,7 +111,7 @@ LaTeXTextRenderer::LaTeXTextRenderer(bool pdflatex)
     push_transform(Geom::identity());
 }
 
-LaTeXTextRenderer::~LaTeXTextRenderer(void)
+LaTeXTextRenderer::~LaTeXTextRenderer()
 {
     if (_stream) {
         writePostamble();
@@ -633,7 +633,7 @@ LaTeXTextRenderer::renderItem(SPItem *item)
 }
 
 void
-LaTeXTextRenderer::writeGraphicPage(void) {
+LaTeXTextRenderer::writeGraphicPage() {
     Inkscape::SVGOStringStream os;
     os.setf(std::ios::fixed); // no scientific notation
 
diff --git a/src/extension/internal/metafile-inout.cpp b/src/extension/internal/metafile-inout.cpp
index b90af9529..42c17bbdc 100644
--- a/src/extension/internal/metafile-inout.cpp
+++ b/src/extension/internal/metafile-inout.cpp
@@ -274,7 +274,7 @@ uint32_t Metafile::sethexcolor(U_COLORREF color){
 Currently a random 3x4 blotch.
 Caller must free.
 */
-gchar *Metafile::bad_image_png(void){
+gchar *Metafile::bad_image_png(){
     gchar *gstring = g_strdup("iVBORw0KGgoAAAANSUhEUgAAAAQAAAADCAIAAAA7ljmRAAAAA3NCSVQICAjb4U/gAAAALElEQVQImQXBQQ2AMAAAsUJQMSWI2H8qME1yMshojwrvGB8XcHKvR1XtOTc/8HENumHCsOMAAAAASUVORK5CYII=");
     return(gstring);
 }
diff --git a/src/extension/internal/metafile-inout.h b/src/extension/internal/metafile-inout.h
index eaa8334ee..c3cda0954 100644
--- a/src/extension/internal/metafile-inout.h
+++ b/src/extension/internal/metafile-inout.h
@@ -70,7 +70,7 @@ protected:
     static pixel_t    *pixel_at (bitmap_t * bitmap, int x, int y);
     static void        my_png_write_data(png_structp png_ptr, png_bytep data, png_size_t length);
     static void        toPNG(PMEMPNG accum, int width, int height, const char *px);
-    static gchar      *bad_image_png(void);
+    static gchar      *bad_image_png();
     static void        setViewBoxIfMissing(SPDocument *doc);
     static int         combine_ops_to_livarot(const int op);
 
diff --git a/src/extension/internal/odf.h b/src/extension/internal/odf.h
index 691d6e1f7..08520eb26 100644
--- a/src/extension/internal/odf.h
+++ b/src/extension/internal/odf.h
@@ -272,7 +272,7 @@ public:
 	        SPDocument *doc,
 	        gchar const *filename) override;
 
-    static void   init  (void);
+    static void   init  ();
 
 private:
 
diff --git a/src/extension/internal/pdfinput/pdf-input.cpp b/src/extension/internal/pdfinput/pdf-input.cpp
index d078b5a9b..bdda43279 100644
--- a/src/extension/internal/pdfinput/pdf-input.cpp
+++ b/src/extension/internal/pdfinput/pdf-input.cpp
@@ -945,7 +945,7 @@ PdfInput::open(::Inkscape::Extension::Input * /*mod*/, const gchar * uri) {
 
 #include "../clear-n_.h"
 
-void PdfInput::init(void) {
+void PdfInput::init() {
     /* PDF in */
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
diff --git a/src/extension/internal/pdfinput/pdf-input.h b/src/extension/internal/pdfinput/pdf-input.h
index 4cf1d01a0..ddcb8f222 100644
--- a/src/extension/internal/pdfinput/pdf-input.h
+++ b/src/extension/internal/pdfinput/pdf-input.h
@@ -136,7 +136,7 @@ class PdfInput: public Inkscape::Extension::Implementation::Implementation {
 public:
     SPDocument *open( Inkscape::Extension::Input *mod,
                                 const gchar *uri ) override;
-    static void         init( void );
+    static void         init( );
     bool wasCancelled() override;
 private:
     bool _cancelled;
diff --git a/src/extension/internal/pov-out.h b/src/extension/internal/pov-out.h
index f38027a4b..d4f7991e7 100644
--- a/src/extension/internal/pov-out.h
+++ b/src/extension/internal/pov-out.h
@@ -65,7 +65,7 @@ public:
     /**
      * Inkscape runtime startup call.
      */
-	static void init(void);
+	static void init();
 	
     /**
      * Reset variables to initial state
diff --git a/src/extension/internal/svg.cpp b/src/extension/internal/svg.cpp
index f4e28e7ed..189ef3c58 100644
--- a/src/extension/internal/svg.cpp
+++ b/src/extension/internal/svg.cpp
@@ -130,7 +130,7 @@ static void pruneProprietaryGarbage( Inkscape::XML::Node *repr )
     the end of each call.
 */
 void
-Svg::init(void)
+Svg::init()
 {
     /* SVG in */
     Inkscape::Extension::build_from_mem(
diff --git a/src/extension/internal/svg.h b/src/extension/internal/svg.h
index a7b593d54..cba0ebf3d 100644
--- a/src/extension/internal/svg.h
+++ b/src/extension/internal/svg.h
@@ -29,7 +29,7 @@ public:
                                gchar const *filename ) override;
     SPDocument *open( Inkscape::Extension::Input *mod,
                                 const gchar *uri ) override;
-    static void         init( void );
+    static void         init( );
 
 };
 
diff --git a/src/extension/internal/svgz.cpp b/src/extension/internal/svgz.cpp
index be9440980..27992ba58 100644
--- a/src/extension/internal/svgz.cpp
+++ b/src/extension/internal/svgz.cpp
@@ -38,7 +38,7 @@ namespace Internal {
     the end of each call.
 */
 void
-Svgz::init(void)
+Svgz::init()
 {
     /* SVGZ in */
     Inkscape::Extension::build_from_mem(
diff --git a/src/extension/internal/svgz.h b/src/extension/internal/svgz.h
index ba348f887..2b917968e 100644
--- a/src/extension/internal/svgz.h
+++ b/src/extension/internal/svgz.h
@@ -23,7 +23,7 @@ namespace Internal {
 
 class Svgz : public Svg {
 public:
-    static void init( void );
+    static void init( );
 };
 
 } } }  // namespace Inkscape, Extension, Implementation
diff --git a/src/extension/internal/vsd-input.cpp b/src/extension/internal/vsd-input.cpp
index 46aa0245c..a0b41a990 100644
--- a/src/extension/internal/vsd-input.cpp
+++ b/src/extension/internal/vsd-input.cpp
@@ -304,7 +304,7 @@ SPDocument *VsdInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * u
 
 #include "clear-n_.h"
 
-void VsdInput::init(void)
+void VsdInput::init()
 {
     /* VSD */
      Inkscape::Extension::build_from_mem(
diff --git a/src/extension/internal/vsd-input.h b/src/extension/internal/vsd-input.h
index 5d8daddb2..6a5c28e65 100644
--- a/src/extension/internal/vsd-input.h
+++ b/src/extension/internal/vsd-input.h
@@ -32,7 +32,7 @@ class VsdInput : public Inkscape::Extension::Implementation::Implementation {
 public:
      SPDocument *open( Inkscape::Extension::Input *mod,
                        const gchar *uri ) override;
-     static void         init( void );
+     static void         init( );
 
 };
 
diff --git a/src/extension/internal/wmf-inout.cpp b/src/extension/internal/wmf-inout.cpp
index bcc8aea85..b19ac8328 100644
--- a/src/extension/internal/wmf-inout.cpp
+++ b/src/extension/internal/wmf-inout.cpp
@@ -67,13 +67,13 @@ namespace Internal {
 static bool clipset = false;
 static uint32_t BLTmode=0;
 
-Wmf::Wmf (void) // The null constructor
+Wmf::Wmf () // The null constructor
 {
     return;
 }
 
 
-Wmf::~Wmf (void) //The destructor
+Wmf::~Wmf () //The destructor
 {
     return;
 }
@@ -3198,7 +3198,7 @@ Wmf::open( Inkscape::Extension::Input * /*mod*/, const gchar *uri )
 
 
 void
-Wmf::init (void)
+Wmf::init ()
 {
     /* WMF in */
     Inkscape::Extension::build_from_mem(
diff --git a/src/extension/internal/wmf-inout.h b/src/extension/internal/wmf-inout.h
index a9831a7c6..fbd7fff3a 100644
--- a/src/extension/internal/wmf-inout.h
+++ b/src/extension/internal/wmf-inout.h
@@ -183,7 +183,7 @@ public:
     SPDocument *open( Inkscape::Extension::Input *mod,
                                 const gchar *uri ) override;
 
-    static void init(void);//Initialize the class
+    static void init();//Initialize the class
 
 private:
 protected:
diff --git a/src/extension/internal/wmf-print.cpp b/src/extension/internal/wmf-print.cpp
index 6c431eba5..9318da939 100644
--- a/src/extension/internal/wmf-print.cpp
+++ b/src/extension/internal/wmf-print.cpp
@@ -1562,7 +1562,7 @@ unsigned int PrintWmf::text(Inkscape::Extension::Print * /*mod*/, char const *te
     return 0;
 }
 
-void PrintWmf::init(void)
+void PrintWmf::init()
 {
     _load_ppt_fontfix_data();
 
diff --git a/src/extension/internal/wmf-print.h b/src/extension/internal/wmf-print.h
index c271e3cf7..5f68b77c1 100644
--- a/src/extension/internal/wmf-print.h
+++ b/src/extension/internal/wmf-print.h
@@ -64,7 +64,7 @@ public:
     unsigned int text(Inkscape::Extension::Print *module, char const *text,
                               Geom::Point const &p, SPStyle const *style) override;
 
-    static void init (void);
+    static void init ();
 protected:
     static void  smuggle_adxky_out(const char *string, int16_t **adx, double *ky, int *rtl, int *ndx, float scale);
 
diff --git a/src/extension/internal/wpg-input.cpp b/src/extension/internal/wpg-input.cpp
index 6a790ed4c..a1c27e3e3 100644
--- a/src/extension/internal/wpg-input.cpp
+++ b/src/extension/internal/wpg-input.cpp
@@ -148,7 +148,7 @@ SPDocument *WpgInput::open(Inkscape::Extension::Input * /*mod*/, const gchar * u
 
 #include "clear-n_.h"
 
-void WpgInput::init(void) {
+void WpgInput::init() {
     Inkscape::Extension::build_from_mem(
         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
             "<name>" N_("WPG Input") "</name>\n"
diff --git a/src/extension/internal/wpg-input.h b/src/extension/internal/wpg-input.h
index 92404a9e7..f938a8d17 100644
--- a/src/extension/internal/wpg-input.h
+++ b/src/extension/internal/wpg-input.h
@@ -26,7 +26,7 @@ class WpgInput : public Inkscape::Extension::Implementation::Implementation {
 public:
     SPDocument *open( Inkscape::Extension::Input *mod,
                                 const gchar *uri ) override;
-    static void         init( void );
+    static void         init( );
 
 };