There are several problems with luaotfload on Cygwin (detailed below).
The short version of this email as that the problems can be fixed by
removing all Cygwin-specific code, so that Cygwin is treated like any
other unix-like system. The relevant patches are attached.
Here are the details, based on the version of luaotfload in the TeX Live
2013 pretest as of today.
1. The code incorrectly assumes that Cygwin is a case-insensitive
system. This is not necessarily the true; see
http://cygwin.com/cygwin-ug-net/using-specialnames.html#pathnames-casesensitive
I and many other Cygwin users have followed these instructions to make
Cygwin case sensitive. As a result, luaotfload-tool failed on my system
with the cryptic error message
...texmf-dist/tex/luatex/luaotfload/luaotfload-database.lua:921: attempt
to index field '?' (a nil value)
I finally tracked down the problem to the fact that case was being
ignored in the filename
/usr/local/texlive/2013/texmf-dist/fonts/opentype/adobe/sourcecodepro/SourceCodePro-Black.otf.
2. The code uses "cygdrive", ignoring the fact that users can change the
cygdrive prefix to whatever they want in /etc/fstab. For example, some
users prefer to use "mnt".
3. Because the code doesn't use /etc/fonts/fonts.conf, it doesn't add
the Cygwin system fonts to the database.
4. Because of the use of os.getenv("WINDIR"), the code produces Windows
paths rather than Posix paths when it scans the Windows font directory.
This causes a problem as reported in the thread starting at
http://cygwin.com/ml/cygwin/2013-04/msg00454.html
and continuing at
http://cygwin.com/ml/cygwin/2013-05/msg00006.html
After my patch is applied, the correct Posix path is used (because it is
in /etc/fonts/fonts.conf).
Ken
--- luaotfload-database.lua.orig 2013-05-18 18:21:33.000000000 -0400
+++ luaotfload-database.lua 2013-05-21 18:02:48.997201900 -0400
@@ -993,25 +993,6 @@
return path
end
- elseif os_name == "cygwin" then -- union of ms + unix
- path_normalize = function (path)
- path = stringgsub(path, '\\', '/')
- path = stringlower(path)
- path = stringgsub(path, '^/cygdrive/(%a)/', '%1:/')
- local dest = lfsreadlink(path)
- if dest then
- if kpsereadable_file(dest) then
- path = dest
- elseif kpsereadable_file(filejoin(filedirname(path), dest))
then
- path = filejoin(file.dirname(path), dest)
- else
- -- broken symlink?
- end
- end
- path = filecollapsepath(path)
- return path
- end
-
else -- posix
path_normalize = function (path)
local dest = lfsreadlink(path)
@@ -1377,7 +1358,7 @@
"/System/Library/Fonts",
"/Network/Library/Fonts",
}
- elseif os.type == "windows" or os.type == "msdos" or os.name == "cygwin"
then
+ elseif os.type == "windows" or os.type == "msdos" then
local windir = os.getenv("WINDIR")
return { filejoin(windir, 'Fonts') }
else
--- luaotfload-legacy-database.lua.orig 2013-05-12 18:44:11.000000000 -0400
+++ luaotfload-legacy-database.lua 2013-05-21 18:11:37.138409800 -0400
@@ -425,7 +425,7 @@
- reading symlinks under non-Win32
- using kpse.readable_file on Win32
]]
- if os.type == "windows" or os.type == "msdos" or os.name == "cygwin" then
+ if os.type == "windows" or os.type == "msdos" then
path = path:gsub('\\', '/')
path = path:lower()
path = path:gsub('^/cygdrive/(%a)/', '%1:/')
@@ -635,7 +635,7 @@
"/System/Library/Fonts",
"/Network/Library/Fonts",
}
- elseif os.type == "windows" or os.type == "msdos" or os.name == "cygwin"
then
+ elseif os.type == "windows" or os.type == "msdos" then
local windir = os.getenv("WINDIR")
return { file.join(windir, 'Fonts') }
else
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