[Github-comments] [geany/geany] Add parsers and built-in filetypes for Lisp dialects (#1922)

[Maxim Jaffe]

**Rationale:**
Currently geany functionality for Lisp dialects is limited to syntax highlighting and only covers  [Common] Lisp and Clojure (currently not full built-in file type). The following change not only expands functionality to existing Lisps dialects but adds support for two major Lisp dialects, Scheme and Racket.

**Changes:**
* Add and integrate universal-ctags parsers for Lisp, Clojure, Scheme and Racket (based on Scheme parser)
* Add built-in filetypes for Clojure, Scheme and Racket (following HACKING instructions)
* Modify calltip functionality to work with current document file type defined wordchars

**Existing problems:**
* Parser capability to identify symbols is limited to functions (Lisp, Clojure, Scheme, Racket), variables (Scheme, Racket) and namespaces (Clojure)
* Calltip only works by typing a open paren after function name which is not suitable for Lisp dialects
* Racket filetype keywords are not being consistently highlighted
* Racket parser is minimal adaptation of Scheme parser
You can view, comment on, or merge this pull request online at:

  https://github.com/geany/geany/pull/1922

-- Commit Summary --

  * Add TagManager parser for Clojure, Lisp and Scheme
  * Add Racket parser and lisp-based builtin filetypes
  * Minor fixes relating to the filetypes
  * Remove reference to scheme tag file
  * Make use of current editor wordchars for calltip
  * Add generated keywords to filetype.rkt

-- File Changes --

    M ctags/Makefile.am (5)
    M ctags/main/parsers.h (6)
    A ctags/parsers/clojure.c (175)
    A ctags/parsers/lisp.c (134)
    A ctags/parsers/racket.c (120)
    A ctags/parsers/scheme.c (122)
    M data/Makefile.am (5)
    R data/filedefs/filetypes.clj (20)
    M data/filedefs/filetypes.lisp (3)
    A data/filedefs/filetypes.rkt (62)
    A data/filedefs/filetypes.scheme (60)
    M data/filetype_extensions.conf (4)
    M src/editor.c (2)
    M src/filetypes.c (5)
    M src/filetypes.h (3)
    M src/highlighting.c (6)
    M src/highlightingmappings.h (16)
    M src/symbols.c (31)
    M src/tagmanager/tm_parser.c (26)
    M src/tagmanager/tm_parser.h (4)

-- Patch Links --

https://github.com/geany/geany/pull/1922.patch
https://github.com/geany/geany/pull/1922.diff

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