Fix various typos

This fixes many spelling mistakes in comments, but a few references to
invalid parameter names, function names and option names too in comments
and also some in string constants

Also, fix an #undef that was undefining the incorrect definition

Author: Alexander Lakhin
Reviewed-by: Justin Pryzby
Discussion: https://postgr.es/m/d5f68d19-c0fc-91a9-118d-7c6a5a3f5fad@gmail.com

5 files changed, 7 insertions, 7 deletions

diff --git a/src/include/access/rmgrdesc_utils.h b/src/include/access/rmgrdesc_utils.h
index e09b112674..bd414699f2 100644
--- a/src/include/access/rmgrdesc_utils.h
+++ b/src/include/access/rmgrdesc_utils.h
@@ -63,4 +63,4 @@ extern void offset_elem_desc(StringInfo buf, void *offset, void *data);
 extern void redirect_elem_desc(StringInfo buf, void *offset, void *data);
 extern void oid_elem_desc(StringInfo buf, void *relid, void *data);
 
-#endif							/* RMGRDESC_UTILS_H */
+#endif							/* RMGRDESC_UTILS_H_ */
diff --git a/src/include/port/pg_iovec.h b/src/include/port/pg_iovec.h
index 2a0e2c0123..689799c425 100644
--- a/src/include/port/pg_iovec.h
+++ b/src/include/port/pg_iovec.h
@@ -36,7 +36,7 @@ struct iovec
 #define PG_IOV_MAX Min(IOV_MAX, 32)
 
 /*
- * Note that pg_preadv and pg_writev have a pg_ prefix as a warning that the
+ * Note that pg_preadv and pg_pwritev have a pg_ prefix as a warning that the
  * Windows implementations have the side-effect of changing the file position.
  */
 
diff --git a/src/include/regex/regcustom.h b/src/include/regex/regcustom.h
index bedee1e9ca..af0fe97c79 100644
--- a/src/include/regex/regcustom.h
+++ b/src/include/regex/regcustom.h
@@ -44,7 +44,7 @@
 
 #include "mb/pg_wchar.h"
 
-#include "miscadmin.h"			/* needed by stacktoodeep */
+#include "miscadmin.h"			/* needed by rstacktoodeep */
 
 
 /* overrides for regguts.h definitions, if any */
diff --git a/src/include/utils/memutils_memorychunk.h b/src/include/utils/memutils_memorychunk.h
index 2439ba4e96..ffa91131c8 100644
--- a/src/include/utils/memutils_memorychunk.h
+++ b/src/include/utils/memutils_memorychunk.h
@@ -37,8 +37,8 @@
  * In some cases, for example when memory allocations become large, it's
  * possible fields 3 and 4 above are not large enough to store the values
  * required for the chunk.  In this case, the MemoryContext can choose to mark
- * the chunk as "external" by calling the MemoryChunkSetExternal() function.
- * When this is done, fields 3 and 4 are unavailable for use by the
+ * the chunk as "external" by calling the MemoryChunkSetHdrMaskExternal()
+ * function.  When this is done, fields 3 and 4 are unavailable for use by the
  * MemoryContext and it's up to the MemoryContext itself to devise its own
  * method for getting the reference to the block.
  *
diff --git a/src/include/utils/tuplesort.h b/src/include/utils/tuplesort.h
index 395abfe596..656a2e9897 100644
--- a/src/include/utils/tuplesort.h
+++ b/src/include/utils/tuplesort.h
@@ -146,7 +146,7 @@ typedef int (*SortTupleComparator) (const SortTuple *a, const SortTuple *b,
 
 /*
  * The public part of a Tuple sort operation state.  This data structure
- * containsthe  definition of sort-variant-specific interface methods and
+ * contains the definition of sort-variant-specific interface methods and
  * the part of Tuple sort operation state required by their implementations.
  */
 typedef struct
@@ -189,7 +189,7 @@ typedef struct
 	 * Function to do some specific release of resources for the sort variant.
 	 * In particular, this function should free everything stored in the "arg"
 	 * field, which wouldn't be cleared on reset of the Tuple sort memory
-	 * contextes.  This can be NULL if nothing specific needs to be done.
+	 * contexts.  This can be NULL if nothing specific needs to be done.
 	 */
 	void		(*freestate) (Tuplesortstate *state);