Move all lua related files to lua/ subfolder

Also remove the lexers sub directory from the Lua search path.
As a result we attempt to open fewer files during startup:

 $ strace -e open -o log ./vis +q config.h && wc -l log

In order to avoid having to modifiy all lexers which `require('lexer')`
we instead place a symlink in the top level directory.

 $ ./configure --disable-lua
 $ rm -rf lua

Should result in a source tree with most lua specifc functionality
removed.

1 files changed, 0 insertions, 63 deletions

diff --git a/lexers/vbscript.lua b/lexers/vbscript.lua
deleted file mode 100644
index 1fcc6d7..0000000
--- a/lexers/vbscript.lua
+++ /dev/null
@@ -1,63 +0,0 @@
--- Copyright 2006-2016 Mitchell mitchell.att.foicica.com. See LICENSE.
--- VisualBasic LPeg lexer.
-
-local l = require('lexer')
-local token, word_match = l.token, l.word_match
-local P, R, S = lpeg.P, lpeg.R, lpeg.S
-
-local M = {_NAME = 'vbscript'}
-
--- Whitespace.
-local ws = token(l.WHITESPACE, l.space^1)
-
--- Comments.
-local comment = token(l.COMMENT, (P("'") + word_match({'rem'}, nil, true)) * l.nonnewline^0)
-
--- Strings.
-local string = token(l.STRING, l.delimited_range('"', true, true))
-
--- Numbers.
-local number = token(l.NUMBER, (l.float + l.integer) * S('LlUuFf')^-2)
-
--- Keywords.
-local keyword = token(l.KEYWORD, word_match({
-  -- Control.
-  'If', 'Then', 'Else', 'ElseIf', 'While', 'Wend', 'For', 'To', 'Each',
-  'In', 'Step', 'Case', 'Select', 'Return', 'Continue', 'Do',
-  'Until', 'Loop', 'Next', 'With', 'Exit',
-  -- Operators.
-  'Mod', 'And', 'Not', 'Or', 'Xor', 'Is',
-  -- Storage types.
-  'Call', 'Class', 'Const', 'Dim', 'ReDim', 'Preserve', 'Function', 'Sub',
-  'Property', 'End', 'Set', 'Let', 'Get', 'New', 'Randomize', 'Option',
-  'Explicit', 'On', 'Error', 'Execute',
-  -- Storage modifiers.
-  'Private', 'Public', 'Default',
-  -- Constants.
-  'Empty', 'False', 'Nothing', 'Null', 'True'
-}, nil, true))
-
--- Types.
-local type = token(l.TYPE, word_match({
-  'Boolean', 'Byte', 'Char', 'Date', 'Decimal', 'Double', 'Long', 'Object',
-  'Short', 'Single', 'String'
-}, nil, true))
-
--- Identifiers.
-local identifier = token(l.IDENTIFIER, l.word)
-
--- Operators.
-local operator = token(l.OPERATOR, S('=><+-*^&:.,_()'))
-
-M._rules = {
-  {'whitespace', ws},
-  {'keyword', keyword},
-  {'type', type},
-  {'comment', comment},
-  {'identifier', identifier},
-  {'string', string},
-  {'number', number},
-  {'operator', operator},
-}
-
-return M