adding forth ctags (optlib based)

[masatake]

(@masatake converted to the original forth.c proposed in #3809 to forth.ctags.)

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.04% ⚠️

Comparison is base (f7e27b4) 85.06% compared to head (18f4f91) 85.03%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3810      +/-   ##
==========================================
- Coverage   85.06%   85.03%   -0.04%     
==========================================
  Files         226      227       +1     
  Lines       53857    53878      +21     
==========================================
  Hits        45816    45816              
- Misses       8041     8062      +21     

Files Changed	Coverage Δ
optlib/forth.c	0.00% <0.00%> (ø)

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[masatake]

@farvardin we need more test cases that show this optlib-based implementation doesn't satisfy you.

What I need are pairs of (input.forth, expecected.tags).

[farvardin]

@farvardin we need more test cases that show this optlib-based implementation doesn't satisfy you.

What I need are pairs of (input.forth, expecected.tags).

It should be satisfying :)
It just doesn't look comptatible with geany, but other IDE are using ctags anyway...

I've put some examples there:

#3809 (comment)

[farvardin]

What I need are pairs of (input.forth, expecected.tags).

I've managed to make a working optlib regex:

--kinddef-Forth=w,word,words
--kinddef-Forth=v,variable,variables
--kinddef-Forth=c,constant,constants

--regex-Forth=/^:[[:space:]]*([^[:space:]]+)/\1/w/
--regex-Forth=/^(variable|VARIABLE)[[:space:]]*([^[:space:]]+)/\2/v/
--regex-Forth=/^([[:alnum:]]+)[[:space:]](constant|CONSTANT)[[:space:]]*([^[:space:]]+)/\3/c/

it should catch correctly to give this result:

DUMMY1	input.fth	/^10 constant DUMMY1$/;"	c
DUMMY2	input.fth	/^12 constant DUMMY2$/;"	c
dummy3	input.fth	/^variable dummy3$/;"	v
dummy4	input.fth	/^variable dummy4$/;"	v
dummy5	input.fth	/^VARIABLE dummy5$/;"	v
fizz?	input.fth	/^: fizz?  $/;"	w
buzz?	input.fth	/^: buzz?  $/;"	w
fizz-buzz?	input.fth	/^: fizz-buzz?  $/;"	w
do-fizz-buzz	input.fth	/^: do-fizz-buzz  $/;"	w

I'll make a PR ASAP (on a branch this time)

[masatake]

See #3812.