[XeTeX] Accessing ligatures from FontForge

[Jonathan Kew]

On 22 Feb 2011, at 22:55, Andy Lin wrote:

> tex-text.map only provides for some punctuation marks. You can add
> these lines to your tex-text.map file (or use it as a base and name it
> something different, like tex-text-f.map). Semicolons are comment
> characters. Below, only fi and fl ligatures are active.
> 
> You'll need to run the file through teckitcompile.exe to generate the
> .tec that XeTeX uses.
> 
> ;U+0066 U+0066	<>	U+FB00	; ff -> ff ligature
> U+0066 U+0069	<>	U+FB01	; fi -> fi ligature
> U+0066 U+006C	<>	U+FB02	; fl -> fl ligature
> ;U+0066 U+0066 U+0069	<>	U+FB03	; ffi -> ffi ligature
> ;U+0066 U+0066 U+006C	<>	U+FB04	; ffl -> ffl ligature
> 

Although you _could_ do this, I wouldn't advise it. Much better to learn how to set up the ligatures you want as 'liga' substitutions in the OpenType font.

JK


> On Tue, Feb 22, 2011 at 17:36, John Was <john.was at ntlworld.com> wrote:
>> Hello
>> 
>> Forgive the puzzlement of a new recruit to FontForge (which is installed via
>> Cygwin on a Windows XP machine).  And apologies if this isn't the right
>> forum - though frequent discussion of font-related issues here gives me
>> hope.
>> 
>> I edited a font which had just the fi and fl ligatures (in their true
>> Unicode positions at FB01 and FB02) and I managed to create tolerable
>> versions of the other three standard ligatures (ff, ffi, ffl).  Using
>> FontForge I have added these in the slots FB00, FB03, and FB04.  But
>> "mapping=tex-text" in the font call (in plain XeTeX) doesn't access any of
>> them, neither the two that were there already nor the three that I created;
>> however, the standard ` ' `` and '' for opening and closing quotations do
>> work so the mapping call is basically functioning as normal.  The glyphs are
>> accessible to TeX if I give them manually as \char"FB00 etc. but I obviously
>> would like to have them delivered automatically as usual.
>> 
>> I have tinkered with various FontForge menus and had hoped that adding
>> 'liga' to the GSUB window would be sufficient, but there is clearly
>> something I am not doing right.  Can anyone advise?
>> 
>> Many thanks
>> 
>> 
>> John
>> 
>> 
>> 
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