Re: [HACKERS] \if, \elseif, \else, \endif (was Re: PSQL commands:\quit_if, \quit_unless)
От | Fabien COELHO |
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Тема | Re: [HACKERS] \if, \elseif, \else, \endif (was Re: PSQL commands:\quit_if, \quit_unless) |
Дата | |
Msg-id | alpine.DEB.2.20.1702240729060.21598@lancre обсуждение исходный текст |
Ответ на | Re: [HACKERS] \if, \elseif, \else, \endif (was Re: PSQL commands:\quit_if, \quit_unless) (Corey Huinker <corey.huinker@gmail.com>) |
Ответы |
Re: [HACKERS] \if, \elseif, \else, \endif (was Re: PSQL commands:\quit_if, \quit_unless)
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Список | pgsql-hackers |
About v17: Patch applies, "make check" & psql "make check" ok. >> ... '@' [...] I noticed that it takes precedence over '!'. [...] > > My reasoning was this: if you're in a false block, and you're not connected > to a db, the \c isn't going to work for you until you get out of the false > block, so right now being in a false block is a bigger problem than not > being connected to a db. [...] Ok. >> It could be nice to keep test cases that show what may happen? > > Restored. It looks weird now, but it fixes the unterminated quoted > string. Typo "unterminted". I think I found an issue while testing in interactive: calvin=# \if false calvin@# \if false calvin@# \echo false-false command ignored, use \endif or Ctrl-C to exit currentbranch. calvin@# \endif calvin=# \echo in false in false The \if within the \if false branch is not tallied properly? Am I missing something? Maybe more test cases should be added to check that nesting checks do work properly? >> Maybe the documentation could add some kind of warning about that? > > I changed the paragraph to > Lines within false branches are parsed normally, however, any completed > queries are not sent to the server, and any completed commands other > than conditionals (<command>\if</command>, <command>\elif</command>, > <command>\else</command>, <command>\endif</command>) are ignored. I'm not sure about the ", however, " commas, but I'm sure that I do not know English punctuation rules:-) Maybe the sentence could be cut in shorter pieces. I think that the fact that "if" commands are checked for proper nesting could be kept in the explanation. > There's no mention that psql variables AREN'T expanded, so the user has > every expectation that they are. Ok. -- Fabien.
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