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Commitfac1c04

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Make tab-completion tests more robust.
Depending on as-yet-incompletely-explained factors, readline/libeditmight choose to emit screen-control escape sequences as part ofrepainting the display. I'd tried to make the test patterns avoidmatching parts of the output that are likely to contain such, butit seems that there's really no way around matching them explicitlyin some places, unless we want to just give up testing some behaviorssuch as display of alternatives.Per report from Peter Geoghegan.Discussion:https://postgr.es/m/CAH2-WznPzfWHu8PQwv1Qjpf4wQVPaaWpoO5NunFz9zsYKB4uJA@mail.gmail.com
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‎src/bin/psql/t/010_tab_completion.pl

Lines changed: 12 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -38,6 +38,12 @@
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my$historyfile ="${TestLib::log_path}/010_psql_history.txt";
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$ENV{PSQL_HISTORY} =$historyfile;
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# Ensure that readline/libedit puts out xterm escapes, not something else.
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$ENV{TERM} ='xterm';
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# regexp to match one xterm escape sequence (CSI style only, for now)
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my$escseq ="(\e\\[[0-9;]*[A-Za-z])";
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# fire up an interactive psql session
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my$in ='';
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my$out ='';
@@ -101,8 +107,12 @@ sub clear_query
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"select\\* from my\a?tab",
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"complete my<tab> to mytab when there are multiple choices");
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# some versions of readline/libedit require two tabs here, some only need one
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check_completion("\t\t","mytab123 +mytab246",
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# some versions of readline/libedit require two tabs here, some only need one.
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# also, some might issue escape sequences to reposition the cursor, clear the
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# line, etc, instead of just printing some spaces.
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check_completion(
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"\t\t",
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"mytab$escseq*123( |$escseq)+mytab$escseq*246",
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"offer multiple table choices");
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check_completion("2\t","246",

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