From acd8c47a0c8bda41d1bf57a6bbc9b37b83065f6c Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg@phi-gamma.net>
Date: Wed, 4 May 2016 21:12:08 +0200
Subject: [letterspace] fix crash in kerning by keeping the default on failed
lookup
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With commit 8c0dd0ebbedd kern accesses were fixed but the results never
tested for the lookup, which caused the default which is set up before
to be nil’ed. Fix this by reusing the value we initialized the kern
factor to.
---
src/luaotfload-letterspace.lua | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
(limited to 'src')
diff --git a/src/luaotfload-letterspace.lua b/src/luaotfload-letterspace.lua
index 21a9136..78df1d7 100644
--- a/src/luaotfload-letterspace.lua
+++ b/src/luaotfload-letterspace.lua
@@ -413,7 +413,7 @@ kerncharacters = function (head)
else
local kern = 0
local kerns = prevchardata.kerns
- if kerns then kern = kerns[lastchar] end
+ if kerns then kern = kerns[lastchar] or kern end
krn = kern + quaddata[lastfont]*krn -- here
insert_node_before(head,start,kern_injector(fillup,krn))
end
@@ -488,7 +488,7 @@ kerncharacters = function (head)
--- font doesn’t contain the glyph
else
local kerns = prevchardata.kerns
- if kerns then kern = kerns[lastchar] end
+ if kerns then kern = kerns[lastchar] or kern end
end
end
krn = kern + quaddata[lastfont]*krn -- here
--
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