Move documentation from function declarations to definitions

Uses a perl script to move it (scripts/movedocs.pl)

src/nvim/api/window.c

@@ -12,6 +12,11 @@
 #include "nvim/misc2.h"
 
 
+/// Gets the current buffer in a window
+///
+/// @param window The window handle
+/// @param[out] err Details of an error that may have occurred
+/// @return The buffer handle
 Buffer window_get_buffer(Window window, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -23,6 +28,11 @@ Buffer window_get_buffer(Window window, Error *err)
   return win->w_buffer->handle;
 }
 
+/// Gets the cursor position in the window
+///
+/// @param window The window handle
+/// @param[out] err Details of an error that may have occurred
+/// @return the (row, col) tuple
 Position window_get_cursor(Window window, Error *err)
 {
   Position rv = {.row = 0, .col = 0};
@@ -36,6 +46,11 @@ Position window_get_cursor(Window window, Error *err)
   return rv;
 }
 
+/// Sets the cursor position in the window
+///
+/// @param window The window handle
+/// @param pos the (row, col) tuple representing the new position
+/// @param[out] err Details of an error that may have occurred
 void window_set_cursor(Window window, Position pos, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -67,6 +82,11 @@ void window_set_cursor(Window window, Position pos, Error *err)
   update_screen(VALID);
 }
 
+/// Gets the window height
+///
+/// @param window The window handle
+/// @param[out] err Details of an error that may have occurred
+/// @return the height in rows
 Integer window_get_height(Window window, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -78,6 +98,12 @@ Integer window_get_height(Window window, Error *err)
   return win->w_height;
 }
 
+/// Sets the window height. This will only succeed if the screen is split
+/// horizontally.
+///
+/// @param window The window handle
+/// @param height the new height in rows
+/// @param[out] err Details of an error that may have occurred
 void window_set_height(Window window, Integer height, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -99,6 +125,11 @@ void window_set_height(Window window, Integer height, Error *err)
   try_end(err);
 }
 
+/// Gets the window width
+///
+/// @param window The window handle
+/// @param[out] err Details of an error that may have occurred
+/// @return the width in columns
 Integer window_get_width(Window window, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -110,6 +141,12 @@ Integer window_get_width(Window window, Error *err)
   return win->w_width;
 }
 
+/// Sets the window width. This will only succeed if the screen is split
+/// vertically.
+///
+/// @param window The window handle
+/// @param width the new width in columns
+/// @param[out] err Details of an error that may have occurred
 void window_set_width(Window window, Integer width, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -131,6 +168,12 @@ void window_set_width(Window window, Integer width, Error *err)
   try_end(err);
 }
 
+/// Gets a window variable
+///
+/// @param window The window handle
+/// @param name The variable name
+/// @param[out] err Details of an error that may have occurred
+/// @return The variable value
 Object window_get_var(Window window, String name, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -142,6 +185,13 @@ Object window_get_var(Window window, String name, Error *err)
   return dict_get_value(win->w_vars, name, err);
 }
 
+/// Sets a window variable. Passing 'nil' as value deletes the variable.
+///
+/// @param window The window handle
+/// @param name The variable name
+/// @param value The variable value
+/// @param[out] err Details of an error that may have occurred
+/// @return The old value
 Object window_set_var(Window window, String name, Object value, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -153,6 +203,12 @@ Object window_set_var(Window window, String name, Object value, Error *err)
   return dict_set_value(win->w_vars, name, value, err);
 }
 
+/// Gets a window option value
+///
+/// @param window The window handle
+/// @param name The option name
+/// @param[out] err Details of an error that may have occurred
+/// @return The option value
 Object window_get_option(Window window, String name, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -164,6 +220,13 @@ Object window_get_option(Window window, String name, Error *err)
   return get_option_from(win, SREQ_WIN, name, err);
 }
 
+/// Sets a window option value. Passing 'nil' as value deletes the option(only
+/// works if there's a global fallback)
+///
+/// @param window The window handle
+/// @param name The option name
+/// @param value The option value
+/// @param[out] err Details of an error that may have occurred
 void window_set_option(Window window, String name, Object value, Error *err)
 {
   win_T *win = find_window(window, err);
@@ -175,6 +238,11 @@ void window_set_option(Window window, String name, Object value, Error *err)
   set_option_to(win, SREQ_WIN, name, value, err);
 }
 
+/// Gets the window position in display cells. First position is zero.
+///
+/// @param window The window handle
+/// @param[out] err Details of an error that may have occurred
+/// @return The (row, col) tuple with the window position
 Position window_get_position(Window window, Error *err)
 {
   Position rv;
@@ -188,6 +256,11 @@ Position window_get_position(Window window, Error *err)
   return rv;
 }
 
+/// Gets the window tab page
+///
+/// @param window The window handle
+/// @param[out] err Details of an error that may have occurred
+/// @return The tab page that contains the window
 Tabpage window_get_tabpage(Window window, Error *err)
 {
   Tabpage rv = 0;
@@ -200,6 +273,10 @@ Tabpage window_get_tabpage(Window window, Error *err)
   return rv;
 }
 
+/// Checks if a window is valid
+///
+/// @param window The window handle
+/// @return true if the window is valid, false otherwise
 Boolean window_is_valid(Window window)
 {
   Error stub = {.set = false};