1:33 p.m.
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https://bugzilla.redhat.com/show_bug.cgi?id=455981
Summary: Missing locl romanian magic
Product: Fedora
Version: rawhide
Platform: All
OS/Version: Linux
Status: NEW
Severity: low
Priority: low
Component: dejavu-fonts
AssignedTo: nicolas.mailhot(a)laposte.net
ReportedBy: nicolas.mailhot(a)laposte.net
QAContact: extras-qa(a)fedoraproject.org
CC: fedora-fonts-bugs-list(a)redhat.com
According to
http://fedoraproject.org/wiki/L10N/Tasks/Ro_fonts
DejaVu has all the glyphs Romanian uses but is missing some necessary locl magic
already available in SIL and proprietary fonts
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1:34 p.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
nicolas.mailhot(a)laposte.net changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|nicolas.mailhot(a)laposte.net |bl.bugs(a)gmail.com
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1:46 p.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-19 14:46 EST -------
I've been told by a Romanian person (as I explicitly asked about this) that
they don't expect to see the S/T with comma below if they type the S/T with
cedilla...
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2:12 p.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From nicolas.mailhot(a)laposte.net 2008-07-19 15:12 EST
-------
Romanians seems to be in disagreement :(
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2:18 p.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-19 15:18 EST -------
My personal view is that it shouldn't be done. The S/T with cedilla code
points are no longer unified with the Romanian letters S/T with comma below,
so they should never appear like them anymore, and if they do, it's a bug.
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4:27 p.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-19 17:27 EST -------
It should be done because locl is an *optional* font feature. The application is
free to request it or not. Unfortunately pango always turns locl on based on
laguage. It should be configurable at pango's level, preferably in way that
allows application to modify it via pango markup. It's okay for the default
pango settings to turn locl on for Romania because the Romanian Academy
typographic standard requires commas not cedillas for Romanian text. The only
possible trouble spot is a Turkish name. But that name could be marked-up as
being in the Turkish language in the document [well, not in plain text].
BTW, if you ever saw a Romanian document rendered with mixed cedillas and commas
you wouldn't doubt the necessity of locl. Adobe introduced ROM/locl because they
(and 99% of commercial fonts) remap "t with cedilla" to "t with
comma"
regardless of locale, based on the assumption that "t with cedilla" is not used
in any language [There's a post on Adobe forums, but I'm too tired to find it
now]. Mixed diacritics look like €rap for Romanian text in the pre-Unicode 3.0
encoding, which sadly is still far more widespread at least on the web [check
with Google]. A [mild] picture of mixed diacritics is here:
http://en.wikipedia.org/wiki/Romanian_alphabet#Adobe.2FLinotype.2FVista_d....
This visual inconsistency is why Adobe Pro fonts can also map "s with cedilla"
to "s with comma" when ROM/locl is turned on. FYI: Vista fonts and the Linotype
fonts [you can check on their site] behave the same way.
Now assume DejaVu, which currently doesn't honor ROM/locl, is used in a document
together with a font that does honor the ROM/locl substituion, not necessarily a
comercial one, e.g. one of the free SIL fonts[*]. You'd get mixed diacritics
again. Granted this is not in the same font, but it is still in the same
document and it looks bad...
Footnote [*] SIL fonts use ROM/ccmp to do the mapping, but pango turns that on
too. I'm not aware of any other fonts except those from SIL that work this way.
Please don't make dejavu work that way. I'd rather have you adopt the Adobe
standard which is used in hundreds of fonts.
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7:05 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-21 08:05 EST -------
Ugh, Unicode seems to have made an even bigger mess out of this than I
originally thought...
So, apparently both U+015E-U+015F, U+0162-U+0163, and U+0218-U+021B can still
all be used for Romanian. With the extra string attached to U+0218-U+021B that
they should be used when a distinct shape with comma below is needed. So
you're still allowed the U+015E-U+015F, U+0162-U+0163 glyphs to write Romanian
apparently.
And since Unicode only cares about code points, it didn't give any clue on how
fonts or renderers are supposed to know when distinct glyphs are needed. Yet
Unicode expects them to clean up the mess they've made.
It should be done because locl is an *optional* font feature.
I thought it was obligated if a language was passed to the renderer (but I may
be wrong on this).
Adobe introduced ROM/locl because they (and 99% of commercial fonts)
remap
"t with cedilla" to "t with comma" regardless of locale
That's just bad, t with cedilla _is_ used sometimes. I think it was even
proposed a long time ago to be used in French for when a t sounds like /s/,
like "relaţion" (didn't catch on unfortunately :-) ). Unicode itself
mentions
Semitic transliteration (but I guess that needs a lot of other glyphs those
fonts don't have).
So far I've only found three Adobe fonts with Romanian glyphs and two didn't
have the locl rule, so it looks like Adobe doesn't do it often either. They
all have indeed t with comma below in the place of t with cedilla. If you have
documents with mixed diacritics you can blame it on that practice, _not_ the
absence of locl rules in the font.
I've also checked the MS Vista fonts once (usually they make the de facto
standard rules since their fonts are most widely spread). Segoe UI and the new
versions of Arial, Times New Roman etc. don't have locl rules or anything else
and have t with cedilla at U+0162-U+0163 (I think the old versions known as
the corefonts were pre-Unicode 3.0). The C-fonts which were made by another
foundry have t with comma below at U+0162-U+0163 like Adobe fonts, and have a
salt (stylistic alternate) _and_ a locl feature for s with cedilla glyphs to s
with comma below for Romanian.
Also, one thing I'm asking myself is: why doesn't Gentium have locl rules (or
ccmp rules)? It's a more recent font compared to Doulos and Charis, so the SIL
people seem to have changed their minds about it, and I'd like to know their
reasons before changing anything in DejaVu.
So, short conclusion: how it's dealt with it seems to just depend on the
foundry that made the fonts, and it also seems to depend on who you ask. So
far, I haven't seen enough yet to be sure that a locl rule is needed.
Also, don't always assume commercial fonts have it right. As said above, the
same fonts have t with comma below in place of t with cedilla, together with a
s with cedilla, which is the worst thing you can do here.
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5:40 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-22 06:40 EST -------
(In reply to comment #5)
So, apparently both U+015E-U+015F, U+0162-U+0163, and U+0218-U+021B
can still
all be used for Romanian. With the extra string attached to U+0218-U+021B that
they should be used when a distinct shape with comma below is needed. So
you're still allowed the U+015E-U+015F, U+0162-U+0163 glyphs to write Romanian
apparently.
Microsoft took about 7 years to include U+0218-U+021B in *some* Windows XP
fonts, which happened only after Romanian got into the EU :) Some XP fonts
(Georgia, Courier) still don't have the proper glyphs, even after the update
[http://www.microsoft.com/downloads/details.aspx?familyid=0ec6f335-c3de-44...]
(google "EU font expansion update if that ugly link doesn't work).
The result is that documents using the pre-Unicode 3.0 encoding (U+015E-U+015F,
U+0162-U+0163) still dominate.
> It should be done because locl is an *optional* font feature.
I thought it was obligated if a language was passed to the renderer (but I may
be
wrong on this).
Currently Uniscribe (the XP renderer) doesn't honor it at all. At least in XP SP3.
> Adobe introduced ROM/locl because they (and 99% of commercial
fonts) remap
> "t with cedilla" to "t with comma" regardless of locale
That's just bad, t with cedilla _is_ used sometimes. I think it was even
proposed a long time ago to be used in French for when a t sounds like /s/,
like "relaţion" (didn't catch on unfortunately :-) ). Unicode itself
mentions
Semitic transliteration (but I guess that needs a lot of other glyphs those
fonts don't have).
I agree it's bad. *Very few* commercial fonts have a proper "t with
cedilla".
Verdna and Tahoma are only significant ones. Everything else follows the Adobe
standard. You can check commercial fonts at Linotypes' website. Below is a link
that restricts the search to fonts that support the Romanian characters:
[http://www.linotype.com/featuresearch?cf[]=adobece&cf[]=euro&cf[]...]
You have to enter a test string yourself, since that doesn't go in the URL.
Use: aăâiîsştţ€sștț.
So far I've only found three Adobe fonts with Romanian glyphs and
two didn't
have the locl rule, so it looks like Adobe doesn't do it often either. They
all have indeed t with comma below in the place of t with cedilla. If you have
documents with mixed diacritics you can blame it on that practice, _not_ the
absence of locl rules in the font.
You probably looked at old fonts. All the Pro fonts they are currently shipping
have complete support for Romanian, with a "t with cedilla" substituted by the
comma variant regardles of locale, and with a ROM/locl feature that
*additionally* substitutes "s with cedilla" with "s with comma". Vista
C-series
fonts have exactly the same feature set, as you pointed out.
[http://en.wikipedia.org/wiki/Romanian_alphabet#Adobe.2FLinotype.2FVista_d...]
Also, one thing I'm asking myself is: why doesn't Gentium
have locl rules (or
ccmp rules)? It's a more recent font compared to Doulos and Charis, so the SIL
people seem to have changed their minds about it, and I'd like to know their
reasons before changing anything in DejaVu.
You need to ask them. IMHO, their implementation of the remapping via ccmp
violates the OpenType 1.4 standard: ccmp should *not* depend on the langage.
So, short conclusion: how it's dealt with it seems to just depend on the
foundry that made the fonts, and it also seems to depend on who you ask. So
far, I haven't seen enough yet to be sure that a locl rule is needed.
The are some variations, but 99% of commercial fonts follow the Adobe standard.
Check on Linotype's website! Unfortunately you cannot check for locl there. But
the Romanian locl issue has be debated to death on typophile forums, and the
opinion leaders there (fokes that run foundries) follow the Adobe standard, locl
included.
Also, don't always assume commercial fonts have it right. As said
above, the
same fonts have t with comma below in place of t with cedilla, together with a
s with cedilla, which is the worst thing you can do here.
Adobe fonts look ok with locl on. Adobe assumed that Microsoft would implement
locl sooner rather than later. InDesign CS3 supports locl in it's own renderer.
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6:31 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-22 07:31 EST -------
OK, I guess it doesn't break anything else to add this (except your Turkish
texts when reading in Romanian locale...). But it still goes against my
philosophy of "don't fix problems of the past, but make sure you don't make
more problems that you need to fix in the future".
So, is this only for latn{ROM} and latn{MOL}, or are there other dialects that
need it as well? If you know any, the full list of languages that can be used
in OpenType is at http://www.microsoft.com/typography/otspec/languagetags.htm
so you can check if it's there.
Similar issue, the s/t with cedilla code point should be canonically the same
as s/t + combining cedilla. In short, that would mean that when you write such
a sequence you need to get a t with comma below as well for Romanian. But I'm
not entirely sure how to do that yet... Probably a "calt" (contextual
alternate) feature for the combining cedilla, but that's not applied by
default in Pango unfortunately, we could misuse "ccmp" (glyph
composition/decomposition) for it, but I'd like to see "calt" turned on
once,
and this way I can use the Romanian community to push Behdad :-)
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6:55 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-22 07:55 EST -------
(In reply to comment #7)
So, is this only for latn{ROM} and latn{MOL}, or are there other dialects that
need it as well? If you know any, the full list of languages that can be used
in OpenType is at http://www.microsoft.com/typography/otspec/languagetags.htm
so you can check if it's there.
As you pointed out, Adobe's fonts do this for latn{MOL} as well. But Moldavians
have their own academy (and country), so I don't know it this is appropriate or
not. Wikipedia doesn't have a page on their alphabet. I guess Adobe is preparing
Moldavians for an an anschluss ;)
No other languages should need it, or if they do, Adobe ignores them for now...
Similar issue, the s/t with cedilla code point should be canonically the same
as s/t + combining cedilla. In short, that would mean that when you write such
a sequence you need to get a t with comma below as well for Romanian. But I'm
not entirely sure how to do that yet... Probably a "calt" (contextual
alternate) feature for the combining cedilla, but that's not applied by
default in Pango unfortunately, we could misuse "ccmp" (glyph
composition/decomposition) for it, but I'd like to see "calt" turned on
once,
and this way I can use the Romanian community to push Behdad :-)
Can you provide a test string string for the combining business? Fontmatrix does
not rely on pango for OpenType features, so I can test it there.
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7:03 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-22 08:03 EST -------
U+015E-U+0163 (s and t with cedilla): Ş ş Ţ ţ
U+0218-U+021B (s and t with comma below): Ş ş Ţ ţ
S/T + U+0327 (combining cedilla): Ş ş Ţ ţ
S/T + U+0326 (combining comma below): Ș ș Ț ț
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7:04 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-22 08:04 EST -------
oops, second line was wrong. This is the correct list:
U+015E-U+0163 (s and t with cedilla): Ş ş Ţ ţ
U+0218-U+021B (s and t with comma below): Ș ș Ț ț
S/T + U+0327 (combining cedilla): Ş ş Ţ ţ
S/T + U+0326 (combining comma below): Ș ș Ț ț
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7:10 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-22 08:10 EST -------
(In reply to comment #6)
But the Romanian locl issue has be debated to death on typophile
forums, and the
opinion leaders there (fokes that run foundries) follow the Adobe standard, locl
included.
For reference purposes, I'm linking to John Hudson's comment on typophile:
[http://www.typophile.com/node/2764#comment-22015]. John is co-founder Tiro
Typeworks, which jointly registered with Adobe the locl feature tag:
[http://www.microsoft.com/typography/otspec/features_ko.htm#locl]
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7:14 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-22 08:14 EST -------
There's apparently some issue with the Gagauz language as well. The wikipedia
page uses comma below, but Unicode people don't seem to know what to use
http://unicode.org/mail-arch/unicode-ml/y2002-m10/0020.html ...
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7:52 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-22 08:52 EST -------
(In reply to comment #12)
There's apparently some issue with the Gagauz language as well.
The wikipedia
page uses comma below, but Unicode people don't seem to know what to use
http://unicode.org/mail-arch/unicode-ml/y2002-m10/0020.html ...
I check the OpenType spec: Gagauz has the language tag GAG. So, you can do
something special for it, assuming you know what to do. So far I haven't seen
any fonts that pay attention to it, so I'd say do nothing now. Like the email
you pointed to said, let some Gagauz speak up before we decide anything for them.
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8:07 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From nicolas.mailhot(a)laposte.net 2008-07-22 09:07 EST
-------
I think that on this subject, the current opinion of an Unicode guru such as
Everson would be very valuable.
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9:13 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-22 10:13 EST -------
(In reply to comment #14)
I think that on this subject, the current opinion of an Unicode guru
such as
Everson would be very valuable.
This is an OpenType issue, not an Unicode issue, but surely some expert opinion
would not hurt.
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9:24 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-22 10:24 EST -------
Everson's document about Gagauz is here:
http://www.evertype.com/alphabets/gagauz.pdf
Basically he says they use comma below, but some may prefer cedilla...
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9:37 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-22 10:37 EST -------
Full quote:
Gagauzi in Russia use Cyrillic; Gagauzi in Romania use Latin. Note that in
Romania, Gagauz uses the characters S WITH COMMA BELOW and T WITH COMMA BELOW.
In inferior Gagauz typography, the glyphs for these characters are sometimes
drawn with CEDILLAs, but it is strongly recommended to avoid this practice.
However, because Gagauz is a Turkic language, it may be left to the user to
decide whether S WITH COMMA BELOW (as in Romanian) or S WITH CEDILLA (as in
Turkish) is preferred.
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9:41 a.m.
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-22 10:41 EST -------
Btw, Everson is wrong about the use of quotes in Romanian
(http://www.evertype.com/alphabets/romanian.pdf), so I wouldn't take him as the
ultimate guru...
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9:43 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From nicolas.mailhot(a)laposte.net 2008-07-22 10:43 EST
-------
Everson is a type designer, not just an Unicode expert. And what I meant was his
opinion on the whole locl thing, not on Gagauz only
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6:21 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-24 07:21 EST -------
OK, I quickly pushed the locl rules for S/T with cedilla in DejaVu before the
freeze for the next release this weekend. So please test the latest snapshot
at http://dejavu.sourceforge.net/snapshots/ and see if it works as expected
(no need to test the condensed fonts, they'll get updated as well soon). Also
test out if everything else like ligatures and mark placement (combining
diacritic placement) still work for Romanian.
I didn't make changes to the combining cedilla yet, I don't know how to
properly tackle that yet.
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7:45 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 08:45 EST -------
I had a quick look at the Sans. Results:
• locl - OK
• mark - HM (S/s cedilla both OK, T/t cedilla still shifted)
The rest were tested with locl on:
• salt - OK (checked J)
• liga - OK (checked ff)
• mark - NO (as expected)
I also found a way to make the combining work, see next message.
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7:48 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 08:48 EST -------
To make the combining (i) look good and (ii) work with locl you do not need a
contextual substitution. A "ligature" is enough! See the Adobe feature file
doc:
you only need a type-4, not a type-6 substitution for this. I decided to put
these in a rlig table for latn{MOL,ROM}. Of course, this rlig has to come before
the locl, so locl can affect ti. I'm attaching some screenshots first and later
some patches later (but there's some fiddle with those).
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7:50 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 08:50 EST -------
Created an attachment (id=312552)
--> (https://bugzilla.redhat.com/attachment.cgi?id=312552&action=view)
My version of Sans, no features enabled - all test glyphs use combining!
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7:51 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 08:51 EST -------
Created an attachment (id=312553)
--> (https://bugzilla.redhat.com/attachment.cgi?id=312553&action=view)
The new ROM rlig feature activated. It looks much better than with mark on!
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7:52 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 08:52 EST -------
Created an attachment (id=312554)
--> (https://bugzilla.redhat.com/attachment.cgi?id=312554&action=view)
Turning on both rlig and locl works as expected.
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8:04 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 09:03 EST -------
Created an attachment (id=312555)
--> (https://bugzilla.redhat.com/attachment.cgi?id=312555&action=view)
Giant patch ball
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8:05 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
gaburici(a)cs.umd.edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #312555|Giant patch ball |Giant patch ball for
description| |Romanian comman and cedilla
| |ligatures.
Attachment #312555|application/x-bzip- |text/plain
mime type|compressed-tar |
Attachment #312555|0 |1
is patch| |
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 09:05 EST -------
(From update of attachment 312555)
You could also add a breve and a, i circumflex to the rlig. But I don't know
the combining unicodes for those...
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8:41 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-24 09:41 EST -------
No, we prefer using anchors to place diacritics. We don't want them in ccmp,
liga or rlig features. We've had plenty of discussions about this in the past,
and even had a lot of these as ligatures in the past, but removed them because
we thought it was a bad idea. With anchors it's just much more maintainable.
The problem with the T/t with cedilla is just the missing cedilla anchor in
the T and t glyphs. Easy to make it work, but that's counted as "feature" so
something for after the release :-)
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9:02 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 10:02 EST -------
How about using abvs and blws tables for these ligatures?
Tag: 'abvs'
Friendly name: Above-base Substitutions
Registered by: Microsoft
Function: Substitutes a ligature for a base glyph and mark that's above it.
UI suggestion: This feature should be on by default.
Tag: "blws"
Friendly name: Below-base Substitutions
Registered by: Microsoft
Function: Produces ligatures that comprise of base glyph and below-base forms.
UI suggestion: This feature should be on by default.
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9:09 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 10:09 EST -------
Btw, your suggestion to use calt for changing presumably just the accent when it
follows S or T in Romanian seem to be a bit different than what the standard
says calt is for:
Tag: 'calt'
Friendly name: Contextual Alternates
Registered by: Adobe
Function: In specified situations, replaces default glyphs with alternate forms
which provide better joining behavior. Used in script typefaces which are
designed to have some or all of their glyphs join.
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9:28 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 10:28 EST -------
Okay, I finished reading all the OpenType tag descriptions. The current spec
doesn't have a type-6 table designated for the purpose you want (replacing
diacritics). So, if you want to avoid making ligatures at all cost, Redhat would
have to register a new OpenType tag...
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10:03 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From nicolas.mailhot(a)laposte.net 2008-07-24 11:03 EST
-------
(In reply to comment #31)
So, if you want to avoid making ligatures at all cost, Redhat would
have to register a new OpenType tag...
Ben is not @rh. He's one of the top DejaVu people, and was kind enough to get an
account in Fedora bugzilla
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10:14 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From bl.bugs(a)gmail.com 2008-07-24 11:14 EST -------
Yeah, I'm not even a fedora user :-)
abvs and blws are used for Indic scripts only.
I think I've mentioned before somewhere, if there's no good feature, we can
misuse ccmp for it. It's common practice to misuse ccmp to replace i by
dotless i before a diacritic above, and renderers also apply ccmp by default
and can handle this.
calt would still be more beautiful though (also for the dotless i situation),
but it's not applied by default (even though the specs suggest otherwise).
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10:45 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-24 11:45 EST -------
Well, I tried to add a calt table: I can enter what should be substituted, but
when I try to click on the box where the replacement should go, FontForge
segfaults. So, this feature will have to wait a little longer. Anyway, given the
complete lack of support in commercial fonts for this feature, I don't think
we'll see users asking about it anytime soon...
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4:34 a.m.
New subject: [Bug 455981] Missing locl romanian magic
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Summary: Missing locl romanian magic
https://bugzilla.redhat.com/show_bug.cgi?id=455981
------- Additional Comments From gaburici(a)cs.umd.edu 2008-07-28 05:34 EST -------
Fixed upstream in 2.26.
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10:08 p.m.
New subject: [Bug 455981] Missing locl romanian magic
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https://bugzilla.redhat.com/show_bug.cgi?id=455981
Tony Fu <tfu(a)redhat.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|eng-i18n-bugs(a)redhat.com |fedora-i18n-bugs(a)redhat.com
--- Comment #36 from Tony Fu <tfu(a)redhat.com> 2008-09-09 23:08:23 EDT ---
requested by Jens Petersen (#27995)
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10:20 p.m.
New subject: [Bug 455981] Missing locl romanian magic
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https://bugzilla.redhat.com/show_bug.cgi?id=455981
Christopher D. Stover <quantumburnz(a)hotmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |CLOSED
CC| |quantumburnz(a)hotmail.com
Resolution| |RAWHIDE
--- Comment #37 from Christopher D. Stover <quantumburnz(a)hotmail.com> 2008-10-26
23:20:13 EDT ---
My understanding is that this issue is resolved. Please reopen and assign if I
am wrong.
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