# Changes in 6.?.?

This page lists only the most significant changes as remembered. Use git-log to review changes not enumerated here, especially in language parsers.

## New and extended options and their flags

New option: `--describe-language=<language>`

> Prints the various aspects of the parser implementing the language.

New column, VER in the output of `--list-{kinds-full,roles,fields,extras,pseudo-tags}` options

> Indicates the versions of ctags output (or the parser) introducing the item in the list.

Extend `--map-<LANG>=` and `--langmap=` options to choose a parser using regular expressions

> `--map-<LANG>=[+]%REXPR%` (or `--langmap=<LANG>:[+]%REXPR%`) maps relative-paths that match the regular expression to the given language.

> The new `--list-map-rexprs` lists all regular-expression-based mappings.

> `--list-maps` has also been extended to include regular-expression-based mappings.

## Incompatible changes

Messages for broken symlinks are now emitted at NOTICE level instead of WARNING. They are shown by default, but can be suppressed with the `--quiet` option.

## Parser related changes

JavaScript:

> - A new field “properties” was added to indicate that a field or member of a class is static.

> - Class member names prefixed with # are recognized as private.

C#:

> - Fix a bug that prevents the parser from extracting methods

>     if the method has nullable parameters.

Meson:

> - Extract config vars defined inside configuration_data({…}).

Python:

> - Support type statements.

### New parsers

The following parsers have been added:

- SINEX: to handle SINEX (Solution INdependent EXchange) files

- Netfilter: to handle the output of “nft list …” command

- Prolog

- DBusService

- GoMod

### Changes about parser specific kinds, roles, fields, and extras

## Readtags

## Merged pull requests

Note

This list is imperfect. masatake cleaned up some pull requests before merging. Though his names is used in “… by …”, his is not the primary contributor of the pull requests. See git log for more defatils.

## Issues close or partially closed via above pull requests