patch 8.2.4838: checking for absolute path is not trivial
Problem: Checking for absolute path is not trivial.
Solution: Add isabsolutepath(). (closes #10303)
diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index e9e16fe..a9a1fcd 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -904,6 +904,7 @@
getfperm() get the permissions of a file
setfperm() set the permissions of a file
getftype() get the kind of a file
+ isabsolutepath() check if a path is absolute
isdirectory() check if a directory exists
getfsize() get the size of a file
getcwd() get the current working directory