diff options
Diffstat (limited to 'src/coding.c')
| -rw-r--r-- | src/coding.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/coding.c b/src/coding.c index 659b52b93fb..e35cb5ddc09 100644 --- a/src/coding.c +++ b/src/coding.c @@ -7465,7 +7465,7 @@ is selected as the TARGET. For example, if OPERATION does file I/O, 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 @@ -7477,6 +7477,13 @@ or a function symbol to call. 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 contains the file's +contents (not yet decoded). If `file-coding-system-alist' specifies a +function to call for FILENAME, that function should examine the +contents of BUFFER instead of reading the file. + usage: (find-operation-coding-system OPERATION ARGUMENTS ...) */) (nargs, args) int nargs; @@ -7503,8 +7510,12 @@ usage: (find-operation-coding-system OPERATION ARGUMENTS ...) */) 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)) @@ -7537,7 +7548,7 @@ usage: (find-operation-coding-system OPERATION ARGUMENTS ...) */) return Fcons (val, val); if (! NILP (Ffboundp (val))) { - val = call1 (val, Flist (nargs, args)); + val = safe_call1 (val, Flist (nargs, args)); if (CONSP (val)) return val; if (SYMBOLP (val) && ! NILP (Fcoding_system_p (val))) |