[latex3-commits] [git/LaTeX3-latex3-babel] docs: More on IAST transliteration. Reminder about the status of amsmath. (a823738)

[Javier]

Repository : https://github.com/latex3/babel
On branch  : docs
Link       : https://github.com/latex3/babel/commit/a823738ea984f08f823022f4c4bbf897da60b811

>---------------------------------------------------------------

commit a823738ea984f08f823022f4c4bbf897da60b811
Author: Javier <email at localhost>
Date:   Thu Feb 10 17:30:11 2022 +0100

    More on IAST transliteration. Reminder about the status of amsmath.


>---------------------------------------------------------------

a823738ea984f08f823022f4c4bbf897da60b811
 docs/news/whats-new-in-babel-3.71.md | 45 ++++++++++++++++++++++++++++--------
 1 file changed, 35 insertions(+), 10 deletions(-)

diff --git a/docs/news/whats-new-in-babel-3.71.md b/docs/news/whats-new-in-babel-3.71.md
index 0c91eb1..8223108 100644
--- a/docs/news/whats-new-in-babel-3.71.md
+++ b/docs/news/whats-new-in-babel-3.71.md
@@ -8,22 +8,47 @@
 
 * (lua) Wrong equation direction in 'cases' and 'array' (#167). The
   latter was a long standing problem, which was even mentioned as a
-  known issue in the manual. Fixing it was not trivial, and a quite new
-  approach to fix math typesetting in bidi texts, written in lua, has
-  been devised. If it does the trick, this mechanism (which is similar
-  to that already applied to `picture`, and part of the code is
+  known issue in the manual. Fixing it was not trivial, and a radically
+  new approach to fix math typesetting in bidi texts, written in lua,
+  has been devised. If it does the trick, this mechanism (which is
+  similar to that already applied to `picture`, and part of the code is
   actually shared) will be fine tuned and extended in future releases.
 
 * (lua) Bad interraction between `bidi` option and `mathtools`, which
-  raised an error (#166). This is also related to the work in progress
-  to improve math typesetting.
+  raised an error (#166). It’s related to the work in progress to
+  improve math typesetting.
   
-## IAST transliteration for Devanagari
+⚠ Remember the `luatex` support for `amsmath` has not been finished.
+Expect some anomalous vertical skips (in part because of a bug in
+luatex) and misplaced tags in some cases (sometimes with `aligned` and
+`gathered`).
 
-This feature has been contributed by Maximilian Mehner. See [radardenker/babel-iast](
-https://github.com/radardenker/babel-iast).
+## IAST transliteration for Devanagari
 
-*(More to follow.)*
+This feature has been contributed by Maximilian Mehner. See
+[radardenker/babel-iast]( https://github.com/radardenker/babel-iast).
+
+Althought `babel` provided the Havard-Kyoto system, which requires only
+ASCII characters, the IAST system is being far more commonly used these
+days, thanks to Unicode.
+
+The transliteration rules also standardize whitespace according to the
+convention of Devanagari, in which — at least for Sanskrit — no
+closing consonants are written with a stop sign if a vowel or consonant
+follows in the sentence or verse line. So for example you would write
+"tat sad iti" in IAST as well as Harvard-Kyoto, but the correct
+Devanagari would be तत्सदिति all under one line giving the impression
+of a single word. Most transliteration tools would transliterate "tat
+sad iti" to तत् सद् इति, so require you to input "tatsaditi" to
+achieve the correct output, but this is in itself a faulty
+romanization.
+
+Full stop (`.`) and slash (`/`) both get replaced by danda (`।`), two
+of either by double-danda (`॥`). Colon (`:`) gets replaced by dash
+(`–`) which is commonly used in Devanagari editions of dramas in this
+function.
+
+*(More to follow..