cdecl-14.2

Autocompletion =
Autocompleting set options that take a value now includes =.

-I changed to -i
The -I option (--explicit-int) has been changed to -i.

-R changed to -r
The -R option (--trailing-return) has been changed to -r.

"West" pointer types
New --west-pointer and -w command-line options and a new west-pointer set option allow specification of when to print *, &, and && adjacent to types ("west"):

int *p;  // east
int* p;  // west

cdecl-14.1.1

Escaping quotes in dump strings
When dumping, quotes in strings are now properly escaped.

Quoting lambda capture dump strings
When dumping, this and *this are now properly quoted.

Fixed operator dump crash
Dumping an operator caused a crash: fixed.

cdecl-14.1

Alternative tokens
Blocks, lambda captures, and reference functions now correctly print alternative tokens when the option is enabled.

Alternative tokens vs. di/trigraphs
If both alternative token and either di/trigraph options are set, alternative tokens now have priority.

C casting without a name
Now allowing C-style casting without a name:

cdecl> cast to pointer to char
(char*)

Di/Trigraphs
Now correctly emitting di/trigraphs for lambda captures and operator[].

Debug output
The format of the debug output has been made more JSON5-like.

Limit when q means quit
The q command is now recognized as a synonym for quit only when it's the only thing on a line other than whitespace. This now allows things like:

cdecl> declare p, q as pointer to int
int *p, *q;

to work without complaining that q is a cdecl keyword.

Trailing return type
New --trailing-return and -R command-line options and trailing-return set option enable printing a function's or operator's return type using the trailing return type syntax in C++11 and later.

unsigned in K&R C
Now correctly restrict unsigned to int only in K&R C.

Verbose version
If either the --version or -v is given twice, additionally prints the set of configure feature & package options and whether GNU readline (if compiled in) is genuine.

Fixed explicit constructor with unnecessary ()
A declaration like:

explain explicit (C)(int)

that's an explicit constructor with unnecessary () caused a crash. Fixed.

cdecl-14.0

Autocompletion bell
When hitting TAB and there are no completion matches, cdecl now rings the terminal's bell.

Cast into array
Now correctly allowing casting into an array when there is no name:

cdecl> explain (char const *const[])
cast into array of constant pointer to constant character

Destructors in C
Cdecl now correctly reports destructors in C as an error.

Digraph & trigraph fixes
The digraphs and trigraphs for { and } weren't emitted when they should have been for nested types. The digraphs & trigraphs for { and } weren't parsed at all. Both fixed.

Lambdas
Support for C++ lambdas has been added:

c++decl> explain [=,&x](int n)
declare lambda capturing [copy by default, reference to x] (n as integer)

Undid K&R function parameter printed as int
Undid a change in cdecl 11.5 where K&R C typeless function parameters were printed as being of type int: they now again print as only their names.

cdecl-13.2

Improved autocompletion
In cases where words in pseudo-Engish can only have a limited set of words that follow in the grammar, only those are now suggested.

Array of array check
Now correctly reporting declarations of arrays of incomplete arrays as an error, e.g.:

cdecl> explain void f(int x[][])
                             ^
23: error: array dimension required

Fixed color prompts
Prompts were always being displayed in color even when --color=never. Fixed.

Function parameter checks
No longer require certain declarations to be function parameters: const, volatile, static, and variable length arrays; [[carries_dependency]]. This was changed so you can explain an individual function parameter declaration without having to wrap it inside a function declaration.

Autocompletion word-break characters
The set of word-break characters for autocompletion has been expanded to be (almost) all non-identifier characters.

extern void v
C allows you to declare an object of an incomplete type, so C allows:

extern void v

Now cdecl does also.

More English synonyms
The following English synonyms have been added:

bit-precise integer  _BitInt
bit precise integer  _BitInt

[[no_unique_address]] bit fields
Bit-fields having [[no_unique_address]] are now correctly reported as an error.

User-defined literal parameter lists
Fixed requiring parameter list for user-defined literals in English.

cdecl-13.1

auto type definitions and casts
Defining or casting a type containing auto is now correctly reported as an error.

C23 auto
Added support for auto as a deduced type in C23.

C23 trigraphs
Trigraphs are no longer supported in C23.

_BitInt(<int>) help
_BitInt(<int>) was added to the help text.

Color prompt
Now printing the prompt in color even when readline is disabled.

More English synonyms
The following English synonyms have been added:

                boolean  _Bool
                Boolean  _Bool
                 char 8  char8_t
                char 16  char16_t
                char 32  char32_t
             const-eval  consteval
    constant-evaluation  consteval
             const-expr  constexpr
    constant-expression  constexpr
             const-init  constinit
constant-initialization  constinit
       double precision  double
         floating point  float
           user defined  user-defined
         wide character  wchar_t

C++ auto help
auto is now correctly listed as a C++ type in the help for C++11 and later.

More pseudo-English type names
When explaining gibberish, print types in C/C++ (e.g., int), not pseudo-English (e.g., integer).

--no-english-types, -T, & english-types
Added command-line options to disable printing type names in pseuso-English and corresponding set option.

More english for user-defined conversions
User-defined conversions in pseudo-English now allow "const[ant] eval[uation]", "const[ant] expr[ession]", and "const[ant] init[ialization]" for a storage class.

_BitInt maximum bits
Now check that the maximum number of bits for _BitInt is 64.

explicit-int parsing
Fixed a bug of not resetting the current explicit-int option to none before parsing a new string.

friend scoped user-defined conversion operators
Explaining a friend scoped user-defined conversion operator, e.g.:

explain friend C::operator int()

is now parsed correctly.

[[noreturn]] in C23.
[[noreturn]] is now printed rather than _Noreturn in C23.

Invalid destructor name error
Improved the error message for an invalid destructor name, e.g., S::~T.

Removed --interactive & -i options
Removed these command-line options. They've been in cdecl since the beginning, but never seemed to have a justification.

exit and quit command line arguments
Both the exit and quit commands when given as the first word of the first argument on the command line are now correctly reported as an error.

C23 constexpr help
Added missing constexpr to the help for C23.

Missing C++ types man page
Added some missing C++23 types to the manual page.

Octal digit separators
Digit separators are now supported for octal integers.

reproducible and unsequenced man page
Added missing reproducible and unsequenced to the manual page.

Variadic function parameter
A ... is now correctly allowed as the only function parameter in C++ as well as C23.

cdecl-13.0

Better copy constructor support
Declarations like:

c++decl> explain C(C const&)
declare C as constructor (reference to constant C)

are now supported better.

C23 alignas
In C23, alignas is now used instead of _Alignas.

C23 _BitInt(N)
The _BitInt(N) type in C23 in now supported.

C23 bool
In C23, bool is now used instead of _Bool.

C23 constexpr
The constexpr storage class in C23 is now supported.

C23 fixed type enum
Fixed-type enumerations in C23 are now supported.

Digit separators
Digit separators are now supported.

C23 reproducible & unsequenced
These C23 attributes are now supported.

C23 thread_local
In C23, thread_local is now used instead of _Thread_local.

C23 true, false, nullptr, static_assert, & thread_local
These are now also keywords in C23.

C23 typeof & typeof_unqual
These C23 keywords are now recognized, but not supported by cdecl.

More C++23 standard types
Added the standard C++23 types std::bfloat16_t, std::float128_t, std::float16_t, std::float32_t, std::float64_t, std::ospanstream, std::spanbuf, std::spanstream, std::stacktrace, std::unexpect_t, std::wospanstream, std::wspanbuf, and std::wspanstream.

Enumeration bit-fields
Enumerations in C++ can now be bit fields.

C++23 explicit object parameters
Explicit object parameters in C++23 are preliminarily supported.

C++ static operator()
Now allow operator() to be static in C++23.

Added std::bernoulli_distribution and std::random_device
Added these missing C++11 types.

static or const array parameters
Both static or const array declarations are now additionally recognized outside of function parameters allowing more specific error reporting (since they're still illegal).

C++11 explicit user-defined conversion operators
Explicit user-defined conversion operators are now correctly allowed in C++11 and later.

Echoing commands
A new --echo-commands/-O command-line option and echo-commands set option has been added that echos command given before corresponding output. (This is primarily useful for associating command output with input in test scripts.)

Better alignment error location
Improved the location of alignment errors.

Fixed aligned bit fields
Aligned bit fields are now correctly forbidden.

Fixed noprompt error column
Fixed the error column when the prompt is disabled.

cdecl-12.0

Added suggestions
Added suggestions to error messages in certain cases when a keyword is expected, for example:

cdecl> declare x as type poiner to int
                         ^
19: syntax error: "poiner": "as" expected; did you mean "pointer"?

Better executable name checking
Previously, if cdecl was invoked as cast, declare, or explain, or with a name that isn't a command (through renaming or a hard or a symbolic link) without command-line arguments, it behaved as if it were invoked as cdecl without error. This has been fixed.

C23
The placeholder name of C2X has been changed to C23.

Color and TERM
The TERM environment variable is no longer considered when determining whether color should be used in output. Now, all that matters is whether the output stream is connected to a TTY.

exit auto-completion
The exit command is no longer auto-completable enabling explain to be auto-completed after typing only ex rather than exp as before.

help options types
Help for types was added to options help.

explicit help
The missing explicit was added to the help.

explicit-escu for enum
The explicit-ecsu option for enums is fixed.

include
Added a new include command to include cdecl commands from files either from a configuration file or the cdecl command line.

_Noreturn deprecated
_Noreturn is now deprecated in C2X.

Printing of types
Now printing types in error messages as they were originally defined (pseudo-English vs. gibberish) in more cases.

Additional sanitizers
The configure options of --enable-msan and --enable-ubsan have been added to enable clang's Memory Sanitizer and Undefined Behavior Sanitizer, respectively. The previous --enable-address-sanitizer has been renamed to --enable-asan.

show autocompletion
The show command now uses command-specific autocompletion.

Overloading co_await operator
Overloading the co_await operator is now supported.

Predefined types
Fixed spelling of bad_typeid; added source_location, type_index, and type_info.

Types as objects, English edition
Previously declared types in pseudo-Engilsh are now checked to ensure they're not being used as objects:

cdecl> struct S
cdecl> declare S as int             // error (now)

cdecl-11.15

_Atomic arrays
_Atomic arrays are now correctly forbidden:

typedef int A[2]
explain _Atomic A x  // error: _Atomic array of T is illegal

Note that:

_Atomic int x[2];    // OK: array of _Atomic T is legal

is legal.

CDECLRC environment variable
If none of the --config, -c, --no-config, nor -C command line options are given and the value of the CDECLRC environment variable isn't empty, it's used as the full path to the cdeclrc file to read upon start-up.

Configuration file default language
Previously, cdecl would temporarily set the current language to the latest supported version of C++ while reading a configuration file. It no longer does this as a special case. Now, as always, it sets the default language based on the executable name.

enum alignment in C11
Alignment of enums is now correctly allowed in C11.

Types as objects
Previously declared types are now checked to ensure they're not being used as objects:

cdecl> struct S
cdecl> explain int S                // error (now)

cdecl-11.14

Alternative tokens & digraphs
Now prints a warning that neither alternative tokens nor digraphs are supported until C95. Also now printing a warning if alternative tokens are set and the current language changes to one that doesn't support them.

east-const in K&R C
Now prints a warning that east-const isn't supported until C89.

using
Now prints a warning that using isn't supported until C++11.

Fixed void f(int())
The long-standing issue #10 has finally been fixed.

Fixed help message
The old mention of files... in the help messages was removed.