Improvements to catch, return, signal, try

Improve the ability to rethrow errors
* Allow return to rethrow an error by accepting '-errorinfo stacktrace'
* Also, 'catch ... opts' now also stores opts(-errorinfo) on error
* Use these to provide better stack traces from 'case' and 'try'
* Implement 'return -level'
Make try/on/finally more Tcl 8.6 compatible
* With support for 'on' handlers and docs
Add support for catch options to try
* Otherwise it's hard to use try to catch signals
Improvements to signal handling
* catch -signal now sets a list of the handled signals as the result
* catch -signal won't execute the body at all if a handled signal is pending
* up to 64 (jim_wide) signals can now be handled
* if catch -signal is nested, the innermost catch will catch the error
* new 'signal catch' allows ignored/blocked signals to be examined and cleared.
* update docs on signal handling
exec should indicate which signal killed the child

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

1 files changed, 6 insertions, 1 deletions

diff --git a/jim-exec.c b/jim-exec.c
index c195286..f9d19a5 100644
--- a/jim-exec.c
+++ b/jim-exec.c
@@ -24,6 +24,7 @@
 
 #include "jim.h"
 #include "jim-subcmd.h"
+#include "jim-signal.h"
 
 /* These two could be moved into the Tcl core */
 static void Jim_SetResultErrno(Jim_Interp *interp, const char *msg)
@@ -947,7 +948,11 @@ Jim_CleanupChildren(Jim_Interp *interp, int numPids, int *pidPtr, int errorId)
                 /* Nothing */
             } else if (WIFSIGNALED(waitStatus)) {
                 /* REVISIT: Name the signal */
-                Jim_SetResultString(interp, "child killed by signal", -1);
+#ifdef jim_ext_signal
+                Jim_SetResultFormatted(interp, "child killed by signal %s", Jim_SignalId(WTERMSIG(waitStatus)));
+#else
+                Jim_SetResultFormatted(interp, "child killed by signal %d", WTERMSIG(waitStatus));
+#endif
             } else if (WIFSTOPPED(waitStatus)) {
                 Jim_SetResultString(interp, "child suspended", -1);
             }