Simplify some comments in xml.c

Author: Justin Pryzby
Discussion: https://postgr.es/m/X/Ff7jfnvJUab013@paquier.xyz

diff --git a/src/backend/utils/adt/xml.c b/src/backend/utils/adt/xml.c
index ca38f961078c4bb7b2f2ede7805f764a702e1812..7350940b66dcdaf0b5e5e3322c3de7722fbe63e2 100644 (file)
--- a/src/backend/utils/adt/xml.c
+++ b/src/backend/utils/adt/xml.c
@@ -4534,13 +4534,7 @@ XmlTableFetchRow(TableFuncScanState *state)
 
    xtCxt = GetXmlTableBuilderPrivateData(state, "XmlTableFetchRow");
 
-   /*
-    * XmlTable returns table - set of composite values. The error context, is
-    * used for producement more values, between two calls, there can be
-    * created and used another libxml2 error context. It is libxml2 global
-    * value, so it should be refreshed any time before any libxml2 usage,
-    * that is finished by returning some value.
-    */
+   /* Propagate our own error context to libxml2 */
    xmlSetStructuredErrorFunc((void *) xtCxt->xmlerrcxt, xml_errorHandler);
 
    if (xtCxt->xpathobj == NULL)
@@ -4594,7 +4588,7 @@ XmlTableGetValue(TableFuncScanState *state, int colnum,
           xtCxt->xpathobj->type == XPATH_NODESET &&
           xtCxt->xpathobj->nodesetval != NULL);
 
-   /* Propagate context related error context to libxml2 */
+   /* Propagate our own error context to libxml2 */
    xmlSetStructuredErrorFunc((void *) xtCxt->xmlerrcxt, xml_errorHandler);
 
    *isnull = false;
@@ -4737,7 +4731,7 @@ XmlTableDestroyOpaque(TableFuncScanState *state)
 
    xtCxt = GetXmlTableBuilderPrivateData(state, "XmlTableDestroyOpaque");
 
-   /* Propagate context related error context to libxml2 */
+   /* Propagate our own error context to libxml2 */
    xmlSetStructuredErrorFunc((void *) xtCxt->xmlerrcxt, xml_errorHandler);
 
    if (xtCxt->xpathscomp != NULL)