Fix some eventloop problems

File handlers now pass through the error code and the handler
is deleted on error.  If there is nothing to do, vwait returns.
If bgerror doesn't exist, print the original error to stderr.

Also remove the 'eof' event handler since it isn't needed.  Can just
call [eof $f]. This also fixes source locations within 'readable'
scripts.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

1 files changed, 7 insertions, 4 deletions

diff --git a/jim_tcl.txt b/jim_tcl.txt
index 4299d37..62e8990 100644
--- a/jim_tcl.txt
+++ b/jim_tcl.txt
@@ -76,6 +76,7 @@ Since v0.62:
 13. It is now possible to 'return' from within 'try'
 14. IPv6 support is now included
 15. Add 'string is'
+16. Event handlers works better if an error occurs. eof handler has been removed.
 
 Since v0.61:
 
@@ -3989,15 +3990,17 @@ eventloop: after, vwait
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 The following commands allow a script to be invoked when the given condition occurs.
+If no script is given, returns the current script. If the given script is the empty, the
+handler is removed.
 
-+$handle *readable* '?readable-script ?eof-script??'+::
-    Returns script, or invoke readable-script when readable, eof-script on eof, {} to remove
++$handle *readable* '?readable-script?'+::
+    Sets or returns the script for when the socket is readable.
 
 +$handle *writable* '?writable-script?'+::
-    Returns script, or invoke writable-script when writable, {} to remove
+    Sets or returns the script for when the socket is writable.
 
 +$handle *onexception* '?exception-script?'+::
-    Returns script, or invoke exception-script when oob data, {} to remove
+    Sets or returns the script for when when oob data received.
 
 Time-based execution is also available via the eventloop API.