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patch 8.2.2278: falling back to old regexp engine can some patterns

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Problem:    Falling back to old regexp engine can some patterns.
Solution:   Do not fall back once [[:lower:]] or [[:upper:]] is used.
            (Christian Brabandt, closes #7572)
This commit is contained in:
Bram Moolenaar
2021-01-02 17:43:49 +01:00
parent 9281c6cae4
commit 66c50c5653
4 changed files with 73 additions and 3 deletions
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46
src/testdir/test_regexp_utf8.vim
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@@ -510,6 +510,52 @@ func Test_match_start_of_line_combining()
bwipe!
endfunc
" Check that [[:upper:]] matches for automatic engine
func Test_match_char_class_upper()
new
let _engine=&regexpengine
" Test 1: [[:upper:]]\{2,\}
set regexpengine=0
call setline(1, ['05. ПЕСНЯ О ГЕРОЯХ муз. А. Давиденко, М. Коваля и Б. Шехтера ...', '05. PJESNJA O GJEROJAKH mus. A. Davidjenko, M. Kovalja i B. Shjekhtjera ...'])
call cursor(1,1)
let search_cmd='norm /\<[[:upper:]]\{2,\}\>' .. "\<CR>"
exe search_cmd
call assert_equal(4, searchcount().total, 'TEST 1')
set regexpengine=1
exe search_cmd
call assert_equal(2, searchcount().total, 'TEST 1')
set regexpengine=2
exe search_cmd
call assert_equal(4, searchcount().total, 'TEST 1')
" Test 2: [[:upper:]].\+
let search_cmd='norm /\<[[:upper:]].\+\>' .. "\<CR>"
set regexpengine=0
exe search_cmd
call assert_equal(2, searchcount().total, 'TEST 2')
set regexpengine=1
exe search_cmd
call assert_equal(1, searchcount().total, 'TEST 2')
set regexpengine=2
exe search_cmd
call assert_equal(2, searchcount().total, 'TEST 2')
" Test 3: [[:lower:]]\+
let search_cmd='norm /\<[[:lower:]]\+\>' .. "\<CR>"
set regexpengine=0
exe search_cmd
call assert_equal(4, searchcount().total, 'TEST 3 lower')
set regexpengine=1
exe search_cmd
call assert_equal(2, searchcount().total, 'TEST 3 lower')
set regexpengine=2
exe search_cmd
call assert_equal(4, searchcount().total, 'TEST 3 lower')
" clean up
let &regexpengine=_engine
bwipe!
endfunc
" vim: shiftwidth=2 sts=2 expandtab