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Commit9138922

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psql: give ^D hint for \q in place where \q is ignored
Also add comment on why exit/quit are not documented.Discussion:https://postgr.es/m/20180202053928.GA13472@momjian.us
1 parent5c9f256 commit9138922

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‎src/bin/psql/mainloop.c

Lines changed: 26 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -223,6 +223,7 @@ MainLoop(FILE *source)
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char*rest_of_line=NULL;
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boolfound_help= false;
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boolfound_exit_or_quit= false;
226+
boolfound_q= false;
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/* Search for the words we recognize; must be first word */
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if (pg_strncasecmp(first_word,"help",4)==0)
@@ -237,10 +238,18 @@ MainLoop(FILE *source)
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found_exit_or_quit= true;
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}
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241+
elseif (strncmp(first_word,"\\q",2)==0)
242+
{
243+
rest_of_line=first_word+2;
244+
found_q= true;
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}
246+
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/*
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* If we found a command word, check whether the rest of the line
242249
* contains only whitespace plus maybe one semicolon. If not,
243-
* ignore the command word after all.
250+
* ignore the command word after all. These commands are only
251+
* for compatibility with other SQL clients and are not
252+
* documented.
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*/
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if (rest_of_line!=NULL)
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{
@@ -288,6 +297,7 @@ MainLoop(FILE *source)
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continue;
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}
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}
300+
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/*
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* "quit" and "exit" are only commands when the query buffer is
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* empty, but we emit a one-line message even when it isn't to
@@ -318,6 +328,21 @@ MainLoop(FILE *source)
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break;
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}
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}
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/*
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* If they typed "\q" in a place where "\q" is not active,
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* supply a hint. The text is still added to the query
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* buffer.
336+
*/
337+
if (found_q&&query_buf->len!=0&&
338+
prompt_status!=PROMPT_READY&&
339+
prompt_status!=PROMPT_CONTINUE&&
340+
prompt_status!=PROMPT_PAREN)
341+
#ifndefWIN32
342+
puts(_("Use control-D to quit."));
343+
#else
344+
puts(_("Use control-C to quit."));
345+
#endif
321346
}
322347

323348
/* echo back if flag is set, unless interactive */

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