`const` first, we do not require it.
    But be consistent with the code around you! >c

    void foo(const char *p, int i);
    }

    int foo(const int a, const bool b) {
    }

    int foo(int *const p) {
    }


Integer Types ~

Of the built-in integer types only use `char`, `int`, `uint8_t`, `int8_t`,
`uint16_t`, `int16_t`, `uint32_t`, `int32_t`, `uint64_t`, `int64_t`,
`uintmax_t`, `intmax_t`, `size_t`, `ssize_t`, `uintptr_t`, `intptr_t`, and
`ptrdiff_t`.

Use `int` for error codes and local, trivial variables only.

Use care when converting integer types. Integer conversions and promotions can
cause non-intuitive behavior. Note that the signedness of `char` is
implementation defined.

Public facing types must have fixed width (`uint8_t`, etc.)

There are no convenient `printf` format placeholders for fixed width types.
Cast to `uintmax_t` or `intmax_t` if you have to format fixed width integers.

Type		unsigned    signed
`char`		`%hhu`	    `%hhd`
`int`		n/a	    `%d`
`(u)intmax_t`	`%ju`	    `%jd`
`(s)size_t`	`%zu`	    `%zd`
`ptrdiff_t`	`%tu`	    `%td`


Booleans ~

Use `bool` to represent boolean values. >c

    int loaded = 1;  // ❌: loaded should have type bool.


Conditions ~

Don't use "yoda-conditions". Use at most one assignment per condition. >c

    if (1 == x) {

    if (x == 1) {  //use this order

    if ((x = f()) && (y = g())) {


Function declarations ~

Every function must not have a separate declaration.

Function declarations are created by the gen_declarations.lua script. >c

    static void f(void);

    static void f(void)
    {
      ...
    }


General translation unit layout ~

The definitions of public functions precede the definitions of static
functions. >c

    <HEADER>

    <PUBLIC FUNCTION DEFINITIONS>

    <STATIC FUNCTION DEFINITIONS>


Integration with declarations generator ~

Every C file must contain #include of the generated header file, guarded by
#ifdef INCLUDE_GENERATED_DECLARATIONS.

Include must go after other #includes and typedefs in .c files and after
everything else in header files. It is allowed to omit #include in a .c file
if .c file does not contain any static functions.

Included file name consists of the .c file name without extension, preceded by
the directory name relative to src/nvim. Name of the file containing static
functions declarations ends with `.c.generated.h`, `*.h.generated.h` files
contain only non-static function declarations. >c

    // src/nvim/foo.c file
    #include <stddef.h>

    typedef int FooType;

    #ifdef INCLUDE_GENERATED_DECLARATIONS
    # include "foo.c.generated.h"
    #endif

    …


    // src/nvim/foo.h file
    #pragma once

    …

    #ifdef INCLUDE_GENERATED_DECLARATIONS
    # include "foo.h.generated.h"
    #endif


64-bit Portability ~

Code should be 64-bit and 32-bit friendly. Bear in mind problems of printing,
comparisons, and structure alignment.

- Remember that `sizeof(void *)` != `sizeof(int)`. Use `intptr_t` if you want
  a pointer-sized integer.

- You may need to be careful with structure alignments, particularly for
  structures being stored on disk. Any class/structure with a
  `int64_t`/`uint64_t` member will by default end up being 8-byte aligned on a
  64-bit system. If you have such structures being shared on disk between
  32-bit and 64-bit code, you will need to ensure that they are packed the
  same on both architectures. Most compilers offer a way to alter structure
  alignment. For gcc, you can use `__attribute__((packed))`. MSVC offers
  `#pragma pack()` and `__declspec(align())`.

- Use the `LL` or `ULL` suffixes as needed to create 64-bit constants. For
  example: >c

    int64_t my_value = 0x123456789LL;
    uint64_t my_mask = 3ULL << 48;


sizeof ~

Prefer `sizeof(varname)` to `sizeof(type)`.

Use `sizeof(varname)` when you take the size of a particular variable.
`sizeof(varname)` will update appropriately if someone changes the variable
type either now or later. You may use `sizeof(type)` for code unrelated