whichever argument specifies the file name is TARGET.
TARGET has a meaning which depends on OPERATION:
- For file I/O, TARGET is a file name.
+ For file I/O, TARGET is a file name (except for the special case below).
For process I/O, TARGET is a process name.
For network I/O, TARGET is a service name or a port number
In the last case, we call the function with one argument,
which is a list of all the arguments given to this function.
+If OPERATION is `insert-file-contents', the argument corresponding to
+TARGET may be a cons (FILENAME . BUFFER). In that case, FILENAME is a
+file name to look up, and BUFFER is a buffer that already contains the
+file (but not yet decoded). If a function is found as above, the
+function must pay attention to this format of TARGET.
+
usage: (find-operation-coding-system OPERATION ARGUMENTS ...) */)
(nargs, args)
int nargs;
target_idx = make_number (4);
target = args[XINT (target_idx) + 1];
if (!(STRINGP (target)
+ || (EQ (operation, Qinsert_file_contents) && CONSP (target)
+ && STRINGP (XCAR (target)) && BUFFERP (XCDR (target)))
|| (EQ (operation, Qopen_network_stream) && INTEGERP (target))))
error ("Invalid argument %d", XINT (target_idx) + 1);
+ if (CONSP (target))
+ target = XCAR (target);
chain = ((EQ (operation, Qinsert_file_contents)
|| EQ (operation, Qwrite_region))