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-rw-r--r--src/luaotfload-auxiliary.lua21
1 files changed, 13 insertions, 8 deletions
diff --git a/src/luaotfload-auxiliary.lua b/src/luaotfload-auxiliary.lua
index 6ba21e0..35f8f2b 100644
--- a/src/luaotfload-auxiliary.lua
+++ b/src/luaotfload-auxiliary.lua
@@ -173,25 +173,30 @@ local set_capheight = function (fontdata)
local shared = fontdata.shared
local parameters = fontdata.parameters
local capheight
- if shared and shared.rawdata.metadata.pfminfo then
+ if shared
+ and shared.rawdata.metadata
+ and shared.rawdata.metadata.pfminfo
+ then
local units_per_em = parameters.units
local size = parameters.size
local os2_capheight = shared.rawdata.metadata.pfminfo.os2_capheight
- if os2_capheight > 0 then
+ if capheight and os2_capheight > 0 then
capheight = os2_capheight / units_per_em * size
else
- local X8 = stringbyte"X"
- if fontdata.characters[X8] then
- capheight = fontdata.characters[X8].height
+ local X8_str = stringbyte"X"
+ local X8_chr = fontdata.characters[X8_str]
+ if X8_chr then
+ capheight = X8_chr.height
else
capheight = parameters.ascender / units_per_em * size
end
end
else
- local X8 = stringbyte"X"
- if fontdata.characters[X8] then
- capheight = fontdata.characters[X8].height
+ local X8_str = stringbyte "X"
+ local X8_chr = fontdata.characters[X8_str]
+ if X8_chr then
+ capheight = X8_chr.height
end
end
if capheight then