[vim/vim] Test_incsearch_substitute_dump() consistently fails when vim configured with --enable-gui=none --disable-arabic (#4569)

[Dominique Pellé]

Test_incsearch_substitute_dump() consistently fails when vim is configured with --enable-gui=none --disable-arabic.

Steps ro reproduce

$ ./configure --with-features=huge --enable-gui=none --disable-arabic 
$ make -j8
$ cd test_dir
$ make test_search
...snip...
Executed 45 tests in  11.654872 seconds
1 FAILED:
Found errors in Test_incsearch_substitute_dump():
Run 1:
function RunTheTest[40]..Test_incsearch_substitute_dump[40]..VerifyScreenDump line 55: See dump file difference: call term_dumpdiff("testdir/failed/Test_incsearch_substitute_03.dump", "testdir/dumps/Test_incsearch_substitute_03.dump"); difference in line 9: "|:|.|,|.|+|2|s|/> @43|4|,|1| @10|T|o|p| "
function RunTheTest[40]..Test_incsearch_substitute_dump[91]..VerifyScreenDump line 55: See dump file difference: call term_dumpdiff("testdir/failed/Test_incsearch_substitute_12.dump", "testdir/dumps/Test_incsearch_substitute_12.dump"); difference in line 9: "| +0&&@3> @65"
Run 2:
function RunTheTest[40]..Test_incsearch_substitute_dump[40]..VerifyScreenDump line 55: See dump file difference: call term_dumpdiff("testdir/failed/Test_incsearch_substitute_03.dump", "testdir/dumps/Test_incsearch_substitute_03.dump"); difference in line 9: "|:|.|,|.|+|2|s|/> @43|4|,|1| @10|T|o|p| "
function RunTheTest[40]..Test_incsearch_substitute_dump[91]..VerifyScreenDump line 55: See dump file difference: call term_dumpdiff("testdir/failed/Test_incsearch_substitute_12.dump", "testdir/dumps/Test_incsearch_substitute_12.dump"); difference in line 9: "| +0&&@3> @65"
Flaky test failed too often, giving up
Makefile:75: recipe for target 'tes

Note that the configure options --enable-gui=none --disable-arabic matter to reproduce the bug.
The same test pass without disabling arabic.

Environment

• Vim-8.1.1875
• xubuntu-18.04.2 x86_64

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[Bram Moolenaar]

Closed #4569 via 693f7dc.

[Bram Moolenaar]

> `Test_incsearch_substitute_dump()` consistently fails when vim is
> configured with `--enable-gui=3Dnone --disable-arabic`.

Hmm, it's the arabic feature that clears the command line after
redrawing for 'incsearch'. It should always remove the ruler.
Somehow that should already happen, but it doesn't.


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