Document pg_ls_*dir hiding of directories and special files

It's strange that a directory-listing function does not list all entries
in a directory, so let's at least document it.  This involves

pg_ls_logdir
pg_ls_waldir
pg_ls_archive_statusdir
pg_ls_tmpdir

Backpatch as far back as it applies cleanly (and as far as as each
function exists).  REL_10_STABLE uses different wording, but hopefully
people are not reading docs so old to write new apps anyway.

Author: Justin Pryzby 
Discussion: https://postgr.es/m/20200305161838[email protected]

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index be586f17a1b6ef0bb89f579e825dd725d88c97d2..4d43ba0584a37ae217479065aa85b5858643ef67 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -21862,6 +21862,7 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
     (mtime) of each file in the log directory. By default, only superusers
     and members of the pg_monitor role can use this function.
     Access may be granted to others using GRANT.
+    Filenames beginning with a dot, directories, and other special files are not shown.
    
 
    
@@ -21873,6 +21874,7 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
     default only superusers and members of the pg_monitor role
     can use this function. Access may be granted to others using
     GRANT.
+    Filenames beginning with a dot, directories, and other special files are not shown.
    
 
    
@@ -21885,6 +21887,7 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
     superusers and members of the pg_monitor role can
     use this function. Access may be granted to others using
     GRANT.
+    Filenames beginning with a dot, directories, and other special files are not shown.
    
 
    
@@ -21898,6 +21901,7 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
     default only superusers and members of the pg_monitor
     role can use this function.  Access may be granted to others using
     GRANT.
+    Filenames beginning with a dot, directories, and other special files are not shown.