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[WIP] Sinhala: update Reph specification #141

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Feb 11, 2022
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[WIP] Sinhala: update Reph specification #141

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2 changes: 1 addition & 1 deletion opentype-shaping-indic-general.md
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Original file line number Diff line number Diff line change
Expand Up @@ -625,7 +625,7 @@ table:
| Oriya | `REPH_POS_AFTER_MAIN` |
| Tamil | `REPH_POS_AFTER_POST` |
| Telugu | `REPH_POS_AFTER_POST` |
| Sinhala | `REPH_POS_AFTER_MAIN` |
| Sinhala | `REPH_POS_AFTER_POST` |



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15 changes: 8 additions & 7 deletions opentype-shaping-sinhala.md
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Expand Up @@ -360,7 +360,8 @@ characteristics include:
consonant in `<sinh>` text differs from that used by other
`BASE_POS_LAST` scripts.

- `REPH_POS_AFTER_MAIN` = "Reph" is ordered after the base consonant or syllable base.
- `REPH_POS_AFTER_POST` = "Reph" is ordered after the last post-base
consonant form.

- `REPH_MODE_EXPLICIT` = "Reph" is formed by an initial "Ra,Halant,ZWJ" sequence.

Expand Down Expand Up @@ -1239,9 +1240,9 @@ the base consonant or syllable base, and all half forms.
#### 4.3: Reph ####

"Reph" must be moved from the beginning of the syllable to its final
position. Because Sinhala incorporates the `REPH_POS_AFTER_MAIN`
shaping characteristic, this final position is immediately after the
syllable base.
position. Because Sinhala incorporates the `REPH_POS_AFTER_POST`
shaping characteristic, this final position is defined to be
immediately after any post-base consonant forms.

The algorithm for finding the final "Reph" position is

Expand All @@ -1252,10 +1253,10 @@ The algorithm for finding the final "Reph" position is
2](#2-initial-reordering)). This will be the final "Reph"
position.
> Note: Because Sinhala incorporates the
> `REPH_POS_AFTER_MAIN` shaping characteristic, this means
> any positioning tag of `POS_ABOVEBASE_CONSONANT` or later,
> `REPH_POS_AFTER_POST` shaping characteristic, this means
> any positioning tag of `POS_FINAL_CONSONANT` or later,
> although a post-base matra, syllable modifier, or Vedic sign
> would not typically be tagged with `POS_ABOVEBASE_CONSONANT`.
> would not typically be tagged with `POS_FINAL_CONSONANT`.
- If no other location has been located in the previous step, move
the "Reph" to the end of the syllable.

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