fixed case-insensitive searches with non-ANSI (Unicode) patternsHEADmaster

* Since case-insensitivity is the default, you couldn't effectively
  search for non-ANSI characters, although character classes were not affected.
* This was a terex bug, i.e. wasn't broken in v2.5.2.
* Test cases have been added.
  The test case for searching for ^E (5) has been simplified using `^E<5>`.

2 files changed, 5 insertions, 5 deletions

diff --git a/contrib/terex b/contrib/terex
-Subproject b00e966f85221c3702a1f3f90e9494eb480876d
+Subproject 438128e7370d0a08f363bace4f690bd48f3804c
diff --git a/tests/testsuite.at b/tests/testsuite.at
index 95c1336..887a833 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -274,15 +274,15 @@ TE_CHECK([[@EB'words-example.txt' Z-4J 2Y .-18"N(0/0)' 2C @Y Z-19"N(0/0)']], 0,
 AT_CLEANUP
 
 AT_SETUP([Searches])
-# FIXME: We cannot currently easily insert a single ASCII 5 (^E), as it must be followed
-# by a 2nd character. It can be quoted, but cannot be written as Caret+E.
-# You also cannot search for a single ASCII 5 using Caret+E.
-# 2 additional ^Q are translated to a single ^Q and interpreted at the search-pattern layer.
-TE_CHECK(m4_format([[@I/^Q%c/ J @:S/^Q^Q^Q%c/"F(0/0)']], 5, 5), 0, ignore, ignore)
+# Searching for ^E (5)
+TE_CHECK([[5@I// J @:S/^Q^Q^E<5>/"F(0/0)']], 0, ignore, ignore)
+TE_CHECK([[@I/АБВГД/ J :@S/в/"F(0/0)' .-3"N(0/0)']], 0, ignore, ignore)
 # Canse-sensitive search
 TE_CHECK([[@I/XXX/J -^X @:S/xxx/"S(0/0)']], 0, ignore, ignore)
+TE_CHECK([[@I/АБВГД/J -^X :@S/в/"S(0/0)']], 0, ignore, ignore)
 # Search mode should be local to the macro frame.
 TE_CHECK([[-^X @^Um{^X} Mm-0"N(0/0)']], 0, ignore, ignore)
+# Anchored search
 TE_CHECK([[@I/XYZ/ J ::@S/X/"F(0/0)' H::@S/Z/"S(0/0)']], 0, ignore, ignore)
 AT_CLEANUP