Newline character set in the D lexer - NEL
Dominikus Dittes Scherkl
dominikus at scherkl.de
Mon Aug 31 09:14:07 UTC 2020
On Monday, 31 August 2020 at 01:49:06 UTC, Cecil Ward wrote:
> Would there be any benefit from the following suggestion? Add
> the character Unicode NEL U+0085 into the set of EndOfLine
> characters in the lexer ?
>
> Cecil Ward.
I personally think we should have these definitions:
/* NUL EM SUB */
EndOfFile = { 0x00 | 0x19 | 0x1A | PhysicalEndOfFile };
/* LF FF CR CR LF NEL LSEP
PSEP */
EndOfLine = { 0x0A | 0x0C | 0x0D | 0x0D 0x0A | 0x85 | 0x2028 |
0x2029 | EndOfFile };
/* HT VT SP NBSP NQSP MQSP
ENSP EMSP 3/MSP */
WhiteSpace = { 0x09 | 0x0B | 0x20 | 0xA0 | 0x2000 | 0x2001 |
0x2002 | 0x2003 | 0x2004
/* 4/MSP 6/MSP FSP PSP THSP
HSP ZWSP NNBSP */
| 0x2005 | 0x2006 | 0x2007 | 0x2008 | 0x2009 |
0x200A | 0x200B | 0x202F
/* MMSP WJ IDSP ZWNBSP */
| 0x205F | 0x2060 | 0x3000 | 0xFEFF | EndOfLine };
The definition of D source files misses quite a lot of them :-(
EM = end of medium (what if not this should end a file?!?)
NEL = New Line
LSEP = Line Separator
PSEP = Paragraph Separator
NBSP = non-braking space
NQSP = ENSP = N-wide space
MQSP = EMSP = M-wide space
3/MSP = 1/3 M-wide space (three spaces together are as wide as an
M)
4/MSP = 1/4 M-wide space
6/MSP = 1/6 M-wide space
FSP = figure space
PSP = point space
THSP = thin space
HSP = hair space
ZWSP = zero width space
NNBSP = narrow non-braking space
MMSP = mathematic space
WJ = word joiner (invisible space that separate words for the
spelling correction)
IDSP = ideographic space (same width as a chinese character)
ZWNBSP = zero-width non-braking space
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