Issue 541 in lilypond: Hebrew lyrics diacritic not well aligned

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Issue 541: Hebrew lyrics diacritic not well aligned
http://code.google.com/p/lilypond/issues/detail?id=541

Comment #7 by yotam.medini:
In a chat I had with Han-Wen, I said I will explain in more details
the 8 PDFs result I submitted on April 15.

Attached is an image as xpdf renders the 8 pdfs (inside nik2han2.tgz):
 address@hidden:541:84> stat -c "%s %x %n" *.pdf
 14375 2008-05-31 21:31:24.000000000 +0300 nikud-aharoni-neg.pdf
 14373 2008-05-31 21:31:26.000000000 +0300 nikud-aharoni-orig.pdf
 66506 2008-05-31 21:31:30.000000000 +0300 nikud-century-neg.pdf
 66503 2008-05-31 21:31:29.000000000 +0300 nikud-century-orig.pdf
 66507 2008-05-31 21:31:30.000000000 +0300 nikud-default-neg.pdf
 66503 2008-05-31 21:31:30.000000000 +0300 nikud-default-orig.pdf
 66506 2008-05-31 21:31:32.000000000 +0300 nikud-frank-neg.pdf
 66503 2008-05-31 21:31:31.000000000 +0300 nikud-frank-orig.pdf

The '-neg' variants fixes the diacritic mark positions
in the {'default','century','frank'} cases, but not in the 'aharoni' case.

In all cases we have 6 lines of one Hebrew syllable in each.

1. Letter 'Kaf' with the 'Patah' mark below it is like a lower-underline.
  It should be positioned in the middle below the character.
  Badly shifted to the right in {'default-orig', 'century-orig', 'frank-orig'},
  Badly shifted to the left in {'aharoni-orig', 'aharoni-neg'},
  Well positioned in {'default-neg','century-neg','frank-neg'}.

2. 2-letters (Bet+Vav), with 'Shuruq' (=~? 'Dagesh') mark (small dot)
  attached to 'Vav'.
  It should be positioned slightly left of the 'Vav' (vertical line),
  with a tiny space.
  {'default-orig','default-neg'} has the dot too close.
  {'default-orig','default-neg','aharoni-orig'} has the dot too close.
  {'aharoni-neg} has the dot too far.
  {'century-orig','century-neg','frank-orig','frank-neg'}' has it OK.

3. Letter 'He' with 'Patah'  mark below it is like a lower-underline.
  It should be positioned in the middle below the character.
  Badly shifted to the left in {'aharoni-orig', 'aharoni-neg'}
  It is well positioned in the other 6 cases.

4  2-letters (Aleph+Vav) with 'Holam' mark (upper dot).
  It should be position above the Vav, makes it look like lower-case 'i'.
  I believe it is also OK to have it slightly to the left.
  So it may be acceptable in all cases.

5. 3-letters, I did not put any diacritic mark there.

6. Letter Vav with Patah mark. Again, it is like a lower-underline.
  It should be positioned in the middle below the character.
  Similar results as with the 1st line, namely:
  Badly shifted to the right in {'default-orig', 'century-orig', 'frank-orig'},
  Badly shifted to the left in {'aharoni-orig', 'aharoni-neg'},
  Well positioned in {'default-neg','century-neg','frank-neg'}.

One significant point Han-Wen said was:
 hanwenn: We should probably use the higher level library to do this
          positioning, but I haven't got time to look into that unfortunately.

-- yotam


Attachments:
        x8pdf.jpeg  49.3 KB
        nik2han2.tgz  340 KB



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