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--- doc/bash.1
+++ doc/bash.1
@@ -2035,6 +2035,13 @@
be a prefix of a stopped job's name; this provides functionality
analogous to the \fB%\fP\fIstring\fP job identifier.
.TP
+.B command_not_found_handle
+The name of a shell function to be called if a command cannot be
+found. The return value of this function should be 0, if the command
+is available after execution of the function, otherwise 127 (EX_NOTFOUND).
+Enabled only in interactive, non POSIX mode shells. This is a Debian
+extension.
+.TP
.B histchars
The two or three characters which control history expansion
and tokenization (see
--- doc/bashref.texi
+++ doc/bashref.texi
@@ -4809,6 +4809,13 @@
@item UID
The numeric real user id of the current user. This variable is readonly.
+@item command_not_found_handle
+The name of a shell function to be called if a command cannot be
+found. The return value of this function should be 0, if the command
+is available after execution of the function, otherwise 127 (EX_NOTFOUND).
+Enabled only in interactive, non POSIX mode shells. This is a Debian
+extension.
+
@end vtable
@node Bash Features
--- execute_cmd.c
+++ execute_cmd.c
@@ -3722,8 +3722,26 @@
if (command == 0)
{
- internal_error (_("%s: command not found"), pathname);
- exit (EX_NOTFOUND); /* Posix.2 says the exit status is 127 */
+ SHELL_VAR *f, *v;
+ WORD_LIST *cmdlist;
+ WORD_DESC *w;
+ int fval;
+ if( (posixly_correct || interactive_shell == 0) ||
+ (f = find_function ("command_not_found_handle")) == 0)
+ {
+ internal_error (_("%s: command not found"), pathname);
+ exit (EX_NOTFOUND); /* Posix.2 says the exit status is 127 */
+ }
+ w = make_word("command_not_found_handle");
+ cmdlist = make_word_list(w, (WORD_LIST*)NULL);
+
+ w = make_word(pathname);
+ cmdlist->next = make_word_list(w, (WORD_LIST*)NULL);
+
+ fval = execute_shell_function (f, cmdlist);
+ if (fval == EX_NOTFOUND)
+ internal_error (_("%s: command not found"), pathname);
+ exit(fval);
}
/* Execve expects the command name to be in args[0]. So we
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