bug#518: Dutch input method flooded with Turkish conversation sequences

[Paul Eggert <eggert@cs.ucla.edu>]

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> On that front, the ij (ij) and IJ (IJ) ligs are not really used.  (They
> are only in the UCS for compatability with legacy encodings.)
> 
> They should not be part of the default input method.

Thanks, good point. I installed the attached.

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From aea80aa6541842aed6cf18ce5dc9a4c3bb6c7340 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 14 Jul 2017 06:19:39 -0700
Subject: [PATCH] Do not convert ij and IJ to compatibility chars

* lisp/leim/quail/latin-alt.el: Omit lines for ij and IJ in Dutch.
Problem reported by James Cloos (Bug#518#10).
---
 etc/NEWS                     | 3 +++
 lisp/leim/quail/latin-alt.el | 3 ---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/etc/NEWS b/etc/NEWS
index 2034bcb..dd6d546 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -360,6 +360,9 @@ variable of this kind to swap modifiers in Emacs.
 
 ---
 ** The 'dutch' input method no longer attempts to support Turkish too.
+Also, it no longer converts 'IJ' and 'ij' to the compatibility
+characters U+0132 LATIN CAPITAL LIGATURE IJ and U+0133 LATIN SMALL
+LIGATURE IJ.
 
 +++
 ** File name quoting by adding the prefix "/:" is now possible for the
diff --git a/lisp/leim/quail/latin-alt.el b/lisp/leim/quail/latin-alt.el
index 0a04874..cc72134 100644
--- a/lisp/leim/quail/latin-alt.el
+++ b/lisp/leim/quail/latin-alt.el
@@ -1174,9 +1174,6 @@
 (quail-define-rules
  ("fl." ?ƒ) ;; LATIN SMALL LETTER F WITH HOOK (florin currency symbol)
  ("eur." ?€) ;; EURO SIGN
- ;; “The 25th letter of the Dutch alphabet.”
- ("ij" ?ij) ;; LATIN SMALL LIGATURE IJ
- ("IJ" ?IJ) ;; LATIN CAPITAL LIGATURE IJ
  ;; “Trema on the second letter of vowel pair.”  Yudit uses `:', not `"'.
  ("\"a" ?ä) ;; LATIN SMALL LETTER A WITH DIAERESIS
  ("\"e" ?ë) ;; LATIN SMALL LETTER E WITH DIAERESIS
-- 
2.7.4