ntg-context - mailing list for ConTeXt users
 help / color / mirror / Atom feed
From: Philipp Gesang <Philipp.Gesang@alumni.uni-heidelberg.de>
To: ConTeXt ML <ntg-context@ntg.nl>
Subject: [fontloader] crash in font-otf.lua / actions["reorganize glyph anchors"]
Date: Sun, 14 Dec 2014 16:23:31 +0100	[thread overview]
Message-ID: <20141214152331.GA22546@acheron> (raw)


[-- Attachment #1.1.1: Type: text/plain, Size: 511 bytes --]

Hi Hans,

this bug was reported a while ago by user Thérèse on
tex.stackexchange.com [1]. The font “Eadui.ttf” [2] causes the
fontloader to access a nil value because the “Anchor-1” table is
sparse (nil at index 3). Test file for Context:

    https://bitbucket.org/phg/lua-la-tex-tests/src/tip/cnt-eadui.tex

Patch attached, though I suspect it covers only the symptoms.

Philipp

[1] http://tex.stackexchange.com/q/195481/14066
[2] Download at http://openfontlibrary.org/font/eadui


[-- Attachment #1.1.2: font-otf.lua_reorganize_glyphs.patch --]
[-- Type: text/x-diff, Size: 836 bytes --]

diff --git a/tex/context/base/font-otf.lua b/tex/context/base/font-otf.lua
index 302d8ea..de392a9 100644
--- a/tex/context/base/font-otf.lua
+++ b/tex/context/base/font-otf.lua
@@ -2010,7 +2010,11 @@ actions["reorganize glyph anchors"] = function(data,filename,raw) -- when we rep
                     for tag, specification in next, data do
                         for i=1,#specification do
                             local si = specification[i]
-                            specification[i] = { si.x or 0, si.y or 0 }
+                            if si then
+                              specification[i] = { si.x or 0, si.y or 0 }
+                            else
+                              specification[i] = {  }
+                            end
                         end
                     end
                 else

[-- Attachment #1.2: Type: application/pgp-signature, Size: 819 bytes --]

[-- Attachment #2: Type: text/plain, Size: 485 bytes --]

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

             reply	other threads:[~2014-12-14 15:23 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-14 15:23 Philipp Gesang [this message]
2014-12-22 16:36 ` Philipp Gesang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20141214152331.GA22546@acheron \
    --to=philipp.gesang@alumni.uni-heidelberg.de \
    --cc=ntg-context@ntg.nl \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).