diff options
Diffstat (limited to 'tex/context/base/math-fbk.lua')
| -rw-r--r-- | tex/context/base/math-fbk.lua | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tex/context/base/math-fbk.lua b/tex/context/base/math-fbk.lua index 76dd1ad9b..ab3a726d1 100644 --- a/tex/context/base/math-fbk.lua +++ b/tex/context/base/math-fbk.lua @@ -12,6 +12,7 @@ local report_fallbacks = logs.reporter("math","fallbacks") local formatters = string.formatters local fastcopy = table.fastcopy +local byte = string.byte local fallbacks = { } mathematics.fallbacks = fallbacks @@ -421,6 +422,53 @@ end virtualcharacters[0xFE33E] = virtualcharacters[0x203E] -- convenient virtualcharacters[0xFE33F] = virtualcharacters[0x203E] -- convenient +-- spacing + +local c_zero = byte('0') +local c_period = byte('.') + +local function spacefraction(data,fraction) + local width = fraction * data.target.parameters.space + return { + width = width, + commands = { right = width } + } +end + +local function charfraction(data,char) + local width = data.target.characters[char].width + return { + width = width, + commands = { right = width } + } +end + +local function quadfraction(data,fraction) + local width = fraction * data.target.parameters.quad + return { + width = width, + commands = { right = width } + } +end + +virtualcharacters[0x00A0] = function(data) return spacefraction(data,1) end -- nbsp +virtualcharacters[0x2000] = function(data) return quadfraction (data,1/2) end -- enquad +virtualcharacters[0x2001] = function(data) return quadfraction (data,1) end -- emquad +virtualcharacters[0x2002] = function(data) return quadfraction (data,1/2) end -- enspace +virtualcharacters[0x2003] = function(data) return quadfraction (data,1) end -- emspace +virtualcharacters[0x2004] = function(data) return quadfraction (data,1/3) end -- threeperemspace +virtualcharacters[0x2005] = function(data) return quadfraction (data,1/4) end -- fourperemspace +virtualcharacters[0x2006] = function(data) return quadfraction (data,1/6) end -- sixperemspace +virtualcharacters[0x2007] = function(data) return charfraction (data,c_zero) end -- figurespace +virtualcharacters[0x2008] = function(data) return charfraction (data,c_period) end -- punctuationspace +virtualcharacters[0x2009] = function(data) return quadfraction (data,1/8) end -- breakablethinspace +virtualcharacters[0x200A] = function(data) return quadfraction (data,1/8) end -- hairspace +virtualcharacters[0x200B] = function(data) return quadfraction (data,0) end -- zerowidthspace +virtualcharacters[0x202F] = function(data) return quadfraction (data,1/8) end -- narrownobreakspace +virtualcharacters[0x205F] = function(data) return spacefraction(data,1/2) end -- math thinspace + +-- + local function smashed(data,unicode,swap,private) local target = data.target local original = data.original |