Collection of typo fixes.

Use "a" and "an" correctly, mostly in comments. Two error messages were
also fixed (they were just elogs, so no translation work required). Two
function comments in pg_proc.h were also fixed. Etsuro Fujita reported one
of these, but I found a lot more with grep.

Also fix a few other typos spotted while grepping for the a/an typos.
For example, "consists out of ..." -> "consists of ...". Plus a "though"/
"through" mixup reported by Euler Taveira.

Many of these typos were in old code, which would be nice to backpatch to
make future backpatching easier. But much of the code was new, and I didn't
feel like crafting separate patches for each branch. So no backpatching.

4 files changed, 5 insertions, 5 deletions

diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c
index 00a2417a09..3e14c536e2 100644
--- a/src/backend/commands/copy.c
+++ b/src/backend/commands/copy.c
@@ -3346,7 +3346,7 @@ CopyReadLineText(CopyState cstate)
 			 * just use the char as a toggle. If they are different, we need
 			 * to ensure that we only take account of an escape inside a
 			 * quoted field and immediately preceding a quote char, and not
-			 * the second in a escape-escape sequence.
+			 * the second in an escape-escape sequence.
 			 */
 			if (in_quote && c == escapec)
 				last_was_esc = !last_was_esc;
diff --git a/src/backend/commands/event_trigger.c b/src/backend/commands/event_trigger.c
index 7658c06d53..43aeac5085 100644
--- a/src/backend/commands/event_trigger.c
+++ b/src/backend/commands/event_trigger.c
@@ -1771,7 +1771,7 @@ EventTriggerCollectAlterTableSubcmd(Node *subcmd, ObjectAddress address)
  * EventTriggerAlterTableEnd
  *		Finish up saving an ALTER TABLE command, and add it to command list.
  *
- * FIXME this API isn't considering the possibility that a xact/subxact is
+ * FIXME this API isn't considering the possibility that an xact/subxact is
  * aborted partway through.  Probably it's best to add an
  * AtEOSubXact_EventTriggers() to fix this.
  */
diff --git a/src/backend/commands/sequence.c b/src/backend/commands/sequence.c
index 80f5553d3a..bb85cb9f13 100644
--- a/src/backend/commands/sequence.c
+++ b/src/backend/commands/sequence.c
@@ -703,8 +703,8 @@ nextval_internal(Oid relid)
 	/*
 	 * If something needs to be WAL logged, acquire an xid, so this
 	 * transaction's commit will trigger a WAL flush and wait for
-	 * syncrep. It's sufficient to ensure the toplevel transaction has a xid,
-	 * no need to assign xids subxacts, that'll already trigger a appropriate
+	 * syncrep. It's sufficient to ensure the toplevel transaction has an xid,
+	 * no need to assign xids subxacts, that'll already trigger an appropriate
 	 * wait.  (Have to do that here, so we're outside the critical section)
 	 */
 	if (logit && RelationNeedsWAL(seqrel))
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 33ea387d62..5114e6f1a4 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -2342,7 +2342,7 @@ RangeVarCallbackForRenameAttribute(const RangeVar *rv, Oid relid, Oid oldrelid,
 }
 
 /*
- *		renameatt		- changes the name of a attribute in a relation
+ *		renameatt		- changes the name of an attribute in a relation
  *
  * The returned ObjectAddress is that of the renamed column.
  */