patch 7.4.1700
Problem: Equivalence classes are not properly tested.
Solution: Add tests for multi-byte and latin1. Fix an error. (Owen Leibman)
diff --git a/src/testdir/test_regexp_utf8.vim b/src/testdir/test_regexp_utf8.vim
new file mode 100644
index 0000000..f5d7ec9
--- /dev/null
+++ b/src/testdir/test_regexp_utf8.vim
@@ -0,0 +1,35 @@
+" Tests for regexp in utf8 encoding
+if !has('multi_byte')
+ finish
+endif
+set encoding=utf-8
+scriptencoding utf-8
+
+func s:equivalence_test()
+ let str = "AÀÁÂÃÄÅĀĂĄǍǞǠẢ BḂḆ CÇĆĈĊČ DĎĐḊḎḐ EÈÉÊËĒĔĖĘĚẺẼ FḞ GĜĞĠĢǤǦǴḠ HĤĦḢḦḨ IÌÍÎÏĨĪĬĮİǏỈ JĴ KĶǨḰḴ LĹĻĽĿŁḺ MḾṀ NÑŃŅŇṄṈ OÒÓÔÕÖØŌŎŐƠǑǪǬỎ PṔṖ Q RŔŖŘṘṞ SŚŜŞŠṠ TŢŤŦṪṮ UÙÚÛÜŨŪŬŮŰŲƯǓỦ VṼ WŴẀẂẄẆ XẊẌ YÝŶŸẎỲỶỸ ZŹŻŽƵẐẔ aàáâãäåāăąǎǟǡả bḃḇ cçćĉċč dďđḋḏḑ eèéêëēĕėęěẻẽ fḟ gĝğġģǥǧǵḡ hĥħḣḧḩẖ iìíîïĩīĭįǐỉ jĵǰ kķǩḱḵ lĺļľŀłḻ mḿṁ nñńņňʼnṅṉ oòóôõöøōŏőơǒǫǭỏ pṕṗ q rŕŗřṙṟ sśŝşšṡ tţťŧṫṯẗ uùúûüũūŭůűųưǔủ vṽ wŵẁẃẅẇẘ xẋẍ yýÿŷẏẙỳỷỹ zźżžƶẑẕ"
+ let groups = split(str)
+ for group1 in groups
+ for c in split(group1, '\zs')
+ " next statement confirms that equivalence class matches every
+ " character in group
+ call assert_match('^[[=' . c . '=]]*$', group1)
+ for group2 in groups
+ if group2 != group1
+ " next statement converts that equivalence class doesn't match
+ " character in any other group
+ call assert_equal(-1, match(group2, '[[=' . c . '=]]'))
+ endif
+ endfor
+ endfor
+ endfor
+endfunc
+
+func Test_equivalence_re1()
+ set re=1
+ call s:equivalence_test()
+endfunc
+
+func Test_equivalence_re2()
+ set re=2
+ call s:equivalence_test()
+endfunc