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Don't elide blank lines when accumulating psql command history.

This can change the meaning of queries, if the blank line happens tooccur in the middle of a quoted literal, as per complaint from Tomas Vondra.Back-patch to all supported branches.

1 parent04da323 commitff4fd4bCopy full SHA for ff4fd4b

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src/bin/psql
- input.c

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`‎src/bin/psql/input.c‎`

Lines changed: 2 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -95,10 +95,10 @@ void`
`95`	`95`	`pg_append_history(constchar*s,PQExpBufferhistory_buf)`
`96`	`96`	`{`
`97`	`97`	`#ifdefUSE_READLINE`
`98`		`-if (useHistory&&s&&s[0])`
	`98`	`+if (useHistory&&s)`
`99`	`99`	`{`
`100`	`100`	`appendPQExpBufferStr(history_buf,s);`
`101`		`-if (s[strlen(s)-1]!='\n')`
	`101`	`+if (!s[0]\|\|s[strlen(s)-1]!='\n')`
`102`	`102`	`appendPQExpBufferChar(history_buf,'\n');`
`103`	`103`	`}`
`104`	`104`	`#endif`

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Commitff4fd4b

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`‎src/bin/psql/input.c‎`

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