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More clearly describe why PQinSend returns false for non-threaded libpq.

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Lines changed: 7 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -11,7 +11,7 @@`
`11`	`11`	`*`
`12`	`12`	`*`
`13`	`13`	`* IDENTIFICATION`
`14`		`- * $PostgreSQL: pgsql/src/interfaces/libpq/fe-secure.c,v 1.36 2004/01/09 02:17:15 momjian Exp $`
	`14`	`+ * $PostgreSQL: pgsql/src/interfaces/libpq/fe-secure.c,v 1.37 2004/02/10 15:21:24 momjian Exp $`
`15`	`15`	`*`
`16`	`16`	`* NOTES`
`17`	`17`	`* The client requires a valid server certificate. Since`
`@@ -1122,6 +1122,11 @@ PQinSend(void)`
`1122`	`1122`	`return (pthread_getspecific(thread_in_send)/* has it been set? */&&`
`1123`	`1123`	`(char)pthread_getspecific(thread_in_send)=='t') ? true : false;`
`1124`	`1124`	`#else`
`1125`		`-return false;/* No threading, so we can't be in send() */`
	`1125`	`+/*`
	`1126`	`+ *No threading: our code ignores SIGPIPE around send().`
	`1127`	`+ *Therefore, we can't be in send() if we are checking`
	`1128`	`+ *from a SIGPIPE signal handler.`
	`1129`	`+ */`
	`1130`	`+return false;`
`1126`	`1131`	`#endif`
`1127`	`1132`	`}`

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