/* Lisp parsing and input streams.
- Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 98, 1999
+ Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 98, 99, 2000, 2001
Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <config.h>
-/* The following feature selections should be in config.h, but that
- causes at best a host of warnings on some systems. */
-#undef _XOPEN_SOURCE /* Avoid warnings about redefinition
- in some cases. */
-#define _XOPEN_SOURCE 500 /* for Unix 98 ftello on GNU */
-#undef __EXTENSIONS__
-#define __EXTENSIONS__ /* Keep Solaris 2.6 happy with the
- above, else things we need are hidden. */
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#define O_RDONLY 0
#endif
-#ifdef HAVE_FTELLO
+#ifdef HAVE_FSEEKO
#define file_offset off_t
#define file_tell ftello
#else
#define file_tell ftell
#endif
+#ifndef USE_CRT_DLL
extern int errno;
+#endif
Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list;
Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist;
/* Directory in which the sources were found. */
Lisp_Object Vsource_directory;
-/* Search path for files to be loaded. */
-Lisp_Object Vload_path;
+/* Search path and suffixes for files to be loaded. */
+Lisp_Object Vload_path, Vload_suffixes, default_suffixes;
/* File name of user's init file. */
Lisp_Object Vuser_init_file;
Fread initializes this to zero, so we need not specbind it
or worry about what happens to it when there is an error. */
static int new_backquote_flag;
+
+/* A list of file names for files being loaded in Fload. Used to
+ check for recursive loads. */
+
+static Lisp_Object Vloads_in_progress;
+
+/* Limit of the depth of recursive loads. */
+
+Lisp_Object Vrecursive_load_depth_limit;
+
+/* Non-zero means load dangerous compiled Lisp files. */
+
+int load_dangerous_libraries;
+
+/* A regular expression used to detect files compiled with Emacs. */
+
+static Lisp_Object Vbytecomp_version_regexp;
+
+static void to_multibyte P_ ((char **, char **, int *));
+static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object,
+ Lisp_Object (*) (), int,
+ Lisp_Object, Lisp_Object));
+static Lisp_Object load_unwind P_ ((Lisp_Object));
+static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object));
+
\f
/* Handle unreading and rereading of characters.
Write READCHAR to read a character,
{
if (read_from_string_index >= read_from_string_limit)
c = -1;
- else if (STRING_MULTIBYTE (readcharfun))
+ else
FETCH_STRING_CHAR_ADVANCE (c, readcharfun,
read_from_string_index,
read_from_string_index_byte);
- else
- c = XSTRING (readcharfun)->data[read_from_string_index++];
return c;
}
{
register Lisp_Object val, delayed_switch_frame;
+#ifdef HAVE_WINDOW_SYSTEM
+ if (display_hourglass_p)
+ cancel_hourglass ();
+#endif
+
delayed_switch_frame = Qnil;
/* Read until we get an acceptable event. */
if (! NILP (delayed_switch_frame))
unread_switch_frame = delayed_switch_frame;
+#ifdef HAVE_WINDOW_SYSTEM
+ if (display_hourglass_p)
+ start_hourglass ();
+#endif
return val;
}
XSETINT (val, getc (instream));
return val;
}
-\f
-static void readevalloop ();
-static Lisp_Object load_unwind ();
-static Lisp_Object load_descriptor_unwind ();
-
-/* Non-zero means load dangerous compiled Lisp files. */
-
-int load_dangerous_libraries;
-
-/* A regular expression used to detect files compiled with Emacs. */
-
-static Lisp_Object Vbytecomp_version_regexp;
+\f
/* Value is non-zero if the file asswociated with file descriptor FD
is a compiled Lisp file that's safe to load. Only files compiled
with Emacs are safe to load. Files compiled with XEmacs can lead
}
+/* Callback for record_unwind_protect. Restore the old load list OLD,
+ after loading a file successfully. */
+
+static Lisp_Object
+record_load_unwind (old)
+ Lisp_Object old;
+{
+ return Vloads_in_progress = old;
+}
+
+
DEFUN ("load", Fload, Sload, 1, 5, 0,
"Execute a file of Lisp code named FILE.\n\
First try FILE with `.elc' appended, then try with `.el',\n\
- then try FILE unmodified.\n\
+ then try FILE unmodified. Environment variable references in FILE\n\
+ are replaced with their values by calling `substitute-in-file-name'.\n\
This function searches the directories in `load-path'.\n\
If optional second arg NOERROR is non-nil,\n\
report no error if FILE doesn't exist.\n\
/* 1 means we are loading a compiled file. */
int compiled = 0;
Lisp_Object handler;
+ int safe_p = 1;
char *fmode = "r";
#ifdef DOS_NT
fmode = "rt";
#endif /* DOS_NT */
- int safe_p = 1;
CHECK_STRING (file, 0);
/* If file name is magic, call the handler. */
- handler = Ffind_file_name_handler (file, Qload);
- if (!NILP (handler))
- return call5 (handler, Qload, file, noerror, nomessage, nosuffix);
+ /* This shouldn't be necessary any more now that `openp' handles it right.
+ handler = Ffind_file_name_handler (file, Qload);
+ if (!NILP (handler))
+ return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */
/* Do this after the handler to avoid
the need to gcpro noerror, nomessage and nosuffix.
- (Below here, we care only whether they are nil or not.) */
+ (Below here, we care only whether they are nil or not.)
+ The presence of this call is the result of a historical accident:
+ it used to be in every file-operations and when it got removed
+ everywhere, it accidentally stayed here. Since then, enough people
+ supposedly have things like (load "$PROJECT/foo.el") in their .emacs
+ that it seemed risky to remove. */
file = Fsubstitute_in_file_name (file);
/* Avoid weird lossage with null string as arg,
if (XSTRING (file)->size > 0)
{
int size = STRING_BYTES (XSTRING (file));
+ Lisp_Object tmp[2];
GCPRO1 (file);
}
fd = openp (Vload_path, file,
- (!NILP (nosuffix) ? ""
- : ! NILP (must_suffix) ? ".elc.gz:.elc:.el.gz:.el"
- : ".elc:.elc.gz:.el.gz:.el:"),
+ (!NILP (nosuffix) ? Qnil
+ : !NILP (must_suffix) ? Vload_suffixes
+ : Fappend (2, (tmp[0] = Vload_suffixes,
+ tmp[1] = default_suffixes,
+ tmp))),
&found, 0);
UNGCPRO;
}
- if (fd < 0)
+ if (fd == -1)
{
if (NILP (noerror))
while (1)
return Qnil;
}
+ /* Tell startup.el whether or not we found the user's init file. */
if (EQ (Qt, Vuser_init_file))
Vuser_init_file = found;
- /* If FD is 0, that means openp found a magic file. */
- if (fd == 0)
+ /* If FD is -2, that means openp found a magic file. */
+ if (fd == -2)
{
if (NILP (Fequal (found, file)))
/* If FOUND is a different file name from FILE,
return call5 (handler, Qload, found, noerror, nomessage, Qt);
}
- /* Load .elc files directly, but not when they are
- remote and have no handler! */
- if (!bcmp (&(XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 4]),
- ".elc", 4)
- && fd != 0)
+ /* Check if we're stuck in a recursive load cycle.
+
+ 2000-09-21: It's not possible to just check for the file loaded
+ being a member of Vloads_in_progress. This fails because of the
+ way the byte compiler currently works; `provide's are not
+ evaluted, see font-lock.el/jit-lock.el as an example. This
+ leads to a certain amount of ``normal'' recursion.
+
+ Also, just loading a file recursively is not always an error in
+ the general case; the second load may do something different. */
+ if (INTEGERP (Vrecursive_load_depth_limit)
+ && XINT (Vrecursive_load_depth_limit) > 0)
{
- struct stat s1, s2;
- int result;
+ Lisp_Object len = Flength (Vloads_in_progress);
+ if (XFASTINT (len) > XFASTINT (Vrecursive_load_depth_limit))
+ Fsignal (Qerror, Fcons (build_string ("Recursive load suspected"),
+ Fcons (found, Vloads_in_progress)));
+ record_unwind_protect (record_load_unwind, Vloads_in_progress);
+ Vloads_in_progress = Fcons (found, Vloads_in_progress);
+ }
- if (!safe_to_load_p (fd))
+ if (!bcmp (&(XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 4]),
+ ".elc", 4))
+ /* Load .elc files directly, but not when they are
+ remote and have no handler! */
+ {
+ if (fd != -2)
{
- safe_p = 0;
- if (!load_dangerous_libraries)
- error ("File `%s' was not compiled in Emacs",
- XSTRING (found)->data);
- else if (!NILP (nomessage))
- message_with_string ("File `%s' not compiled in Emacs", found, 1);
- }
+ struct stat s1, s2;
+ int result;
- compiled = 1;
+ if (!safe_to_load_p (fd))
+ {
+ safe_p = 0;
+ if (!load_dangerous_libraries)
+ error ("File `%s' was not compiled in Emacs",
+ XSTRING (found)->data);
+ else if (!NILP (nomessage))
+ message_with_string ("File `%s' not compiled in Emacs", found, 1);
+ }
+
+ compiled = 1;
#ifdef DOS_NT
- fmode = "rb";
+ fmode = "rb";
#endif /* DOS_NT */
- stat ((char *)XSTRING (found)->data, &s1);
- XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 0;
- result = stat ((char *)XSTRING (found)->data, &s2);
- if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
- {
- /* Make the progress messages mention that source is newer. */
- newer = 1;
+ stat ((char *)XSTRING (found)->data, &s1);
+ XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 0;
+ result = stat ((char *)XSTRING (found)->data, &s2);
+ if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
+ {
+ /* Make the progress messages mention that source is newer. */
+ newer = 1;
- /* If we won't print another message, mention this anyway. */
- if (! NILP (nomessage))
- message_with_string ("Source file `%s' newer than byte-compiled file",
- found, 1);
+ /* If we won't print another message, mention this anyway. */
+ if (! NILP (nomessage))
+ message_with_string ("Source file `%s' newer than byte-compiled file",
+ found, 1);
+ }
+ XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 'c';
}
- XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 'c';
}
else
{
- load_source:
-
/* We are loading a source file (*.el). */
if (!NILP (Vload_source_file_function))
{
- if (fd != 0)
+ Lisp_Object val;
+
+ if (fd >= 0)
emacs_close (fd);
- return call4 (Vload_source_file_function, found, file,
- NILP (noerror) ? Qnil : Qt,
- NILP (nomessage) ? Qnil : Qt);
+ val = call4 (Vload_source_file_function, found, file,
+ NILP (noerror) ? Qnil : Qt,
+ NILP (nomessage) ? Qnil : Qt);
+ return unbind_to (count, val);
}
}
else /* The typical case; compiled file newer than source file. */
message_with_string ("Loading %s...done", file, 1);
}
+
return Qt;
}
/* Search for a file whose name is STR, looking in directories
in the Lisp list PATH, and trying suffixes from SUFFIX.
- SUFFIX is a string containing possible suffixes separated by colons.
On success, returns a file descriptor. On failure, returns -1.
+ SUFFIXES is a list of strings containing possible suffixes.
+ The empty suffix is automatically added iff the list is empty.
+
EXEC_ONLY nonzero means don't open the files,
just look for one that is executable. In this case,
returns 1 on success.
the file actually found should be stored as a Lisp string.
nil is stored there on failure.
- If the file we find is remote, return 0
+ If the file we find is remote, return -2
but store the found remote file name in *STOREPTR.
We do not check for remote files if EXEC_ONLY is nonzero. */
int
-openp (path, str, suffix, storeptr, exec_only)
+openp (path, str, suffixes, storeptr, exec_only)
Lisp_Object path, str;
- char *suffix;
+ Lisp_Object suffixes;
Lisp_Object *storeptr;
int exec_only;
{
int want_size;
Lisp_Object filename;
struct stat st;
- struct gcpro gcpro1;
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
+ Lisp_Object string, tail;
+ int max_suffix_len = 0;
- GCPRO1 (str);
+ for (tail = suffixes; CONSP (tail); tail = XCDR (tail))
+ {
+ CHECK_STRING (XCAR (tail), 0);
+ max_suffix_len = max (max_suffix_len,
+ STRING_BYTES (XSTRING (XCAR (tail))));
+ }
+
+ string = filename = Qnil;
+ GCPRO5 (str, string, filename, path, suffixes);
+
if (storeptr)
*storeptr = Qnil;
if (complete_filename_p (str))
absolute = 1;
- for (; !NILP (path); path = Fcdr (path))
+ for (; CONSP (path); path = XCDR (path))
{
- char *nsuffix;
-
- filename = Fexpand_file_name (str, Fcar (path));
+ filename = Fexpand_file_name (str, XCAR (path));
if (!complete_filename_p (filename))
/* If there are non-absolute elts in PATH (eg ".") */
/* Of course, this could conceivably lose if luser sets
/* Calculate maximum size of any filename made from
this path element/specified file name and any possible suffix. */
- want_size = strlen (suffix) + STRING_BYTES (XSTRING (filename)) + 1;
+ want_size = max_suffix_len + STRING_BYTES (XSTRING (filename)) + 1;
if (fn_size < want_size)
fn = (char *) alloca (fn_size = 100 + want_size);
- nsuffix = suffix;
-
/* Loop over suffixes. */
- while (1)
+ for (tail = NILP (suffixes) ? default_suffixes : suffixes;
+ CONSP (tail); tail = XCDR (tail))
{
- char *esuffix = (char *) index (nsuffix, ':');
- int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix);
+ int lsuffix = STRING_BYTES (XSTRING (XCAR (tail)));
Lisp_Object handler;
/* Concatenate path element/specified name with the suffix.
}
if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */
- strncat (fn, nsuffix, lsuffix);
-
+ strncat (fn, XSTRING (XCAR (tail))->data, lsuffix);
+
/* Check that the file exists and is not a directory. */
- if (absolute)
- handler = Qnil;
- else
- handler = Ffind_file_name_handler (filename, Qfile_exists_p);
- if (! NILP (handler) && ! exec_only)
+ /* We used to only check for handlers on non-absolute file names:
+ if (absolute)
+ handler = Qnil;
+ else
+ handler = Ffind_file_name_handler (filename, Qfile_exists_p);
+ It's not clear why that was the case and it breaks things like
+ (load "/bar.el") where the file is actually "/bar.el.gz". */
+ handler = Ffind_file_name_handler (filename, Qfile_exists_p);
+ if (!NILP (handler) && !exec_only)
{
- Lisp_Object string;
int exists;
string = build_string (fn);
- exists = ! NILP (exec_only ? Ffile_executable_p (string)
- : Ffile_readable_p (string));
- if (exists
- && ! NILP (Ffile_directory_p (build_string (fn))))
+ exists = !NILP (Ffile_readable_p (string));
+ if (exists && !NILP (Ffile_directory_p (build_string (fn))))
exists = 0;
if (exists)
if (storeptr)
*storeptr = build_string (fn);
UNGCPRO;
- return 0;
+ return -2;
}
}
else
}
}
}
-
- /* Advance to next suffix. */
- if (esuffix == 0)
- break;
- nsuffix += lsuffix + 1;
}
if (absolute)
break;
}
Lisp_Object
-unreadpure () /* Used as unwind-protect function in readevalloop */
+unreadpure (junk) /* Used as unwind-protect function in readevalloop */
+ Lisp_Object junk;
{
read_pure = 0;
return Qnil;
return Qnil;
}
+/* Signal an `end-of-file' error, if possible with file name
+ information. */
+
+static void
+end_of_file_error ()
+{
+ Lisp_Object data;
+
+ if (STRINGP (Vload_file_name))
+ data = Fcons (Vload_file_name, Qnil);
+ else
+ data = Qnil;
+
+ Fsignal (Qend_of_file, data);
+}
+
/* UNIBYTE specifies how to set load_convert_to_unibyte
for this invocation.
READFUN, if non-nil, is used instead of `read'. */
int count = specpdl_ptr - specpdl;
struct gcpro gcpro1;
struct buffer *b = 0;
+ int continue_reading_p;
if (BUFFERP (readcharfun))
b = XBUFFER (readcharfun);
LOADHIST_ATTACH (sourcename);
- while (1)
+ continue_reading_p = 1;
+ while (continue_reading_p)
{
if (b != 0 && NILP (b->name))
error ("Reading from killed buffer");
{
UNREAD (c);
read_objects = Qnil;
- if (! NILP (readfun))
- val = call1 (readfun, readcharfun);
+ if (!NILP (readfun))
+ {
+ val = call1 (readfun, readcharfun);
+
+ /* If READCHARFUN has set point to ZV, we should
+ stop reading, even if the form read sets point
+ to a different value when evaluated. */
+ if (BUFFERP (readcharfun))
+ {
+ struct buffer *b = XBUFFER (readcharfun);
+ if (BUF_PT (b) == BUF_ZV (b))
+ continue_reading_p = 0;
+ }
+ }
else if (! NILP (Vload_read_function))
val = call1 (Vload_read_function, readcharfun);
else
}
val = (*evalfun) (val);
+
if (printflag)
{
Vvalues = Fcons (val, Vvalues);
a function (call it with no arguments for each character,\n\
call it with a char as argument to push a char back)\n\
a string (takes text from string, starting at the beginning)\n\
- t (read text line using minibuffer and use it).")
+ t (read text line using minibuffer and use it, or read from\n\
+ standard input in batch mode).")
(stream)
Lisp_Object stream;
{
characters. */
unsigned char str[MAX_MULTIBYTE_LENGTH];
int len = 0;
+ int bytes;
str[len++] = c;
while ((c = READCHAR) >= 0xA0
&& len < MAX_MULTIBYTE_LENGTH)
str[len++] = c;
UNREAD (c);
- return STRING_CHAR (str, len);
+ if (UNIBYTE_STR_AS_MULTIBYTE_P (str, len, bytes))
+ return STRING_CHAR (str, len);
+ /* The byte sequence is not valid as multibyte. Unread all bytes
+ but the first one, and return the first byte. */
+ while (--len > 0)
+ UNREAD (str[len]);
+ return str[0];
}
/* Read a \-escape sequence, assuming we already read the `\'. */
Lisp_Object readcharfun;
int radix;
{
- int number, ndigits, invalid_p, c, sign;
+ int ndigits = 0, invalid_p, c, sign = 0;
+ EMACS_INT number = 0;
if (radix < 2 || radix > 36)
invalid_p = 1;
}
+/* Convert unibyte text in read_buffer to multibyte.
+
+ Initially, *P is a pointer after the end of the unibyte text, and
+ the pointer *END points after the end of read_buffer.
+
+ If read_buffer doesn't have enough room to hold the result
+ of the conversion, reallocate it and adjust *P and *END.
+
+ At the end, make *P point after the result of the conversion, and
+ return in *NCHARS the number of characters in the converted
+ text. */
+
+static void
+to_multibyte (p, end, nchars)
+ char **p, **end;
+ int *nchars;
+{
+ int nbytes;
+
+ parse_str_as_multibyte (read_buffer, *p - read_buffer, &nbytes, nchars);
+ if (read_buffer_size < 2 * nbytes)
+ {
+ int offset = *p - read_buffer;
+ read_buffer_size = 2 * max (read_buffer_size, nbytes);
+ read_buffer = (char *) xrealloc (read_buffer, read_buffer_size);
+ *p = read_buffer + offset;
+ *end = read_buffer + read_buffer_size;
+ }
+
+ if (nbytes != *nchars)
+ nbytes = str_as_multibyte (read_buffer, read_buffer_size,
+ *p - read_buffer, nchars);
+
+ *p = read_buffer + nbytes;
+}
+
+
/* If the next token is ')' or ']' or '.', we store that character
in *PCH and the return value is not interesting. Else, we store
zero in *PCH and we read and return one lisp object.
retry:
c = READCHAR;
- if (c < 0) return Fsignal (Qend_of_file, Qnil);
+ if (c < 0)
+ end_of_file_error ();
switch (c)
{
Lisp_Object beg, end, plist;
beg = read1 (readcharfun, &ch, 0);
+ end = plist = Qnil;
if (ch == ')')
break;
if (ch == 0)
case '?':
{
c = READCHAR;
- if (c < 0) return Fsignal (Qend_of_file, Qnil);
+ if (c < 0)
+ end_of_file_error ();
if (c == '\\')
c = read_escape (readcharfun, 0);
case '"':
{
- register char *p = read_buffer;
- register char *end = read_buffer + read_buffer_size;
+ char *p = read_buffer;
+ char *end = read_buffer + read_buffer_size;
register int c;
/* Nonzero if we saw an escape sequence specifying
a multibyte character. */
{
if (end - p < MAX_MULTIBYTE_LENGTH)
{
- char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2);
- p += new - read_buffer;
- read_buffer += new - read_buffer;
+ int offset = p - read_buffer;
+ read_buffer = (char *) xrealloc (read_buffer,
+ read_buffer_size *= 2);
+ p = read_buffer + offset;
end = read_buffer + read_buffer_size;
}
}
}
if (c < 0)
- return Fsignal (Qend_of_file, Qnil);
+ end_of_file_error ();
/* If purifying, and string starts with \ newline,
return zero instead. This is for doc strings
return make_number (0);
if (force_multibyte)
- nchars = multibyte_chars_in_text (read_buffer, p - read_buffer);
+ to_multibyte (&p, &end, &nchars);
else if (force_singlebyte)
nchars = p - read_buffer;
else if (load_convert_to_unibyte)
{
Lisp_Object string;
- nchars = multibyte_chars_in_text (read_buffer, p - read_buffer);
+ to_multibyte (&p, &end, &nchars);
if (p - read_buffer != nchars)
{
string = make_multibyte_string (read_buffer, nchars,
}
else if (EQ (readcharfun, Qget_file_char)
|| EQ (readcharfun, Qlambda))
- /* Nowadays, reading directly from a file
- is used only for compiled Emacs Lisp files,
- and those always use the Emacs internal encoding.
- Meanwhile, Qlambda is used for reading dynamic byte code
- (compiled with byte-compile-dynamic = t). */
- nchars = multibyte_chars_in_text (read_buffer, p - read_buffer);
+ {
+ /* Nowadays, reading directly from a file is used only for
+ compiled Emacs Lisp files, and those always use the
+ Emacs internal encoding. Meanwhile, Qlambda is used
+ for reading dynamic byte code (compiled with
+ byte-compile-dynamic = t). */
+ to_multibyte (&p, &end, &nchars);
+ }
else
/* In all other cases, if we read these bytes as
separate characters, treat them as separate characters now. */
case '.':
{
- /* If a period is followed by a number, then we should read it
- as a floating point number. Otherwise, it denotes a dotted
- pair. */
int next_char = READCHAR;
UNREAD (next_char);
- if (! (next_char >= '0' && next_char <= '9'))
+ if (next_char <= 040
+ || index ("\"'`,(", next_char))
{
*pch = c;
return Qnil;
default_label:
if (c <= 040) goto retry;
{
- register char *p = read_buffer;
+ char *p = read_buffer;
int quoted = 0;
{
- register char *end = read_buffer + read_buffer_size;
+ char *end = read_buffer + read_buffer_size;
while (c > 040
- && !(c == '\"' || c == '\'' || c == ';' || c == '?'
+ && !(c == '\"' || c == '\'' || c == ';'
|| c == '(' || c == ')'
- || c == '[' || c == ']' || c == '#'
- ))
+ || c == '[' || c == ']' || c == '#'))
{
if (end - p < MAX_MULTIBYTE_LENGTH)
{
- register char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2);
- p += new - read_buffer;
- read_buffer += new - read_buffer;
+ int offset = p - read_buffer;
+ read_buffer = (char *) xrealloc (read_buffer,
+ read_buffer_size *= 2);
+ p = read_buffer + offset;
end = read_buffer + read_buffer_size;
}
+
if (c == '\\')
{
c = READCHAR;
+ if (c == -1)
+ end_of_file_error ();
quoted = 1;
}
if (p == end)
{
- char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2);
- p += new - read_buffer;
- read_buffer += new - read_buffer;
-/* end = read_buffer + read_buffer_size; */
+ int offset = p - read_buffer;
+ read_buffer = (char *) xrealloc (read_buffer,
+ read_buffer_size *= 2);
+ p = read_buffer + offset;
+ end = read_buffer + read_buffer_size;
}
*p = 0;
if (c >= 0)
case Lisp_Vectorlike:
{
int i;
- int length = Flength(subtree);
+ int length = XINT (Flength(subtree));
for (i = 0; i < length; i++)
{
Lisp_Object idx = make_number (i);
case Lisp_Cons:
{
SUBSTITUTE (Fcar_safe (subtree),
- Fsetcar (subtree, true_value));
+ Fsetcar (subtree, true_value));
SUBSTITUTE (Fcdr_safe (subtree),
- Fsetcdr (subtree, true_value));
+ Fsetcdr (subtree, true_value));
return subtree;
}
case Lisp_String:
{
/* Check for text properties in each interval.
- substitute_in_interval contains part of the logic. */
+ substitute_in_interval contains part of the logic. */
INTERVAL root_interval = XSTRING (subtree)->intervals;
Lisp_Object arg = Fcons (object, placeholder);
- traverse_intervals (root_interval, 1, 0,
- &substitute_in_interval, arg);
+ traverse_intervals_noorder (root_interval,
+ &substitute_in_interval, arg);
return subtree;
}
if (!NILP (Vpurify_flag))
string = Fpurecopy (string);
sym = Fmake_symbol (string);
- XSYMBOL (sym)->obarray = obarray;
+
+ if (EQ (obarray, initial_obarray))
+ XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY;
+ else
+ XSYMBOL (sym)->interned = SYMBOL_INTERNED;
if ((XSTRING (string)->data[0] == ':')
&& EQ (obarray, initial_obarray))
- XSYMBOL (sym)->value = sym;
+ {
+ XSYMBOL (sym)->constant = 1;
+ XSYMBOL (sym)->value = sym;
+ }
ptr = &XVECTOR (obarray)->contents[XINT (tem)];
if (SYMBOLP (*ptr))
if (SYMBOLP (name) && !EQ (name, tem))
return Qnil;
- XSYMBOL (tem)->obarray = Qnil;
+ XSYMBOL (tem)->interned = SYMBOL_UNINTERNED;
+ XSYMBOL (tem)->constant = 0;
+ XSYMBOL (tem)->indirect_variable = 0;
hash = oblookup_last_bucket_number;
initial_obarray = Vobarray;
staticpro (&initial_obarray);
/* Intern nil in the obarray */
- XSYMBOL (Qnil)->obarray = Vobarray;
+ XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY;
+ XSYMBOL (Qnil)->constant = 1;
+
/* These locals are to kludge around a pyramid compiler bug. */
hash = hash_string ("nil", 3);
/* Separate statement here to avoid VAXC bug. */
XSYMBOL (Qnil)->value = Qnil;
XSYMBOL (Qnil)->plist = Qnil;
XSYMBOL (Qt)->value = Qt;
+ XSYMBOL (Qt)->constant = 1;
/* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
Vpurify_flag = Qt;
val = allocate_misc ();
XMISCTYPE (val) = Lisp_Misc_Intfwd;
XINTFWD (val)->intvar = address;
- XSYMBOL (sym)->value = val;
+ SET_SYMBOL_VALUE (sym, val);
}
/* Similar but define a variable whose value is T if address contains 1,
val = allocate_misc ();
XMISCTYPE (val) = Lisp_Misc_Boolfwd;
XBOOLFWD (val)->boolvar = address;
- XSYMBOL (sym)->value = val;
+ SET_SYMBOL_VALUE (sym, val);
Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars);
}
val = allocate_misc ();
XMISCTYPE (val) = Lisp_Misc_Objfwd;
XOBJFWD (val)->objvar = address;
- XSYMBOL (sym)->value = val;
+ SET_SYMBOL_VALUE (sym, val);
}
void
XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd;
XBUFFER_OBJFWD (val)->offset = offset;
- XSYMBOL (sym)->value = val;
- *(Lisp_Object *)(offset + (char *)&buffer_local_symbols) = sym;
- *(Lisp_Object *)(offset + (char *)&buffer_local_types) = type;
- if (XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)) == 0)
+ SET_SYMBOL_VALUE (sym, val);
+ PER_BUFFER_SYMBOL (offset) = sym;
+ PER_BUFFER_TYPE (offset) = type;
+
+ if (PER_BUFFER_IDX (offset) == 0)
/* Did a DEFVAR_PER_BUFFER without initializing the corresponding
slot of buffer_local_flags */
abort ();
val = allocate_misc ();
XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd;
XKBOARD_OBJFWD (val)->offset = offset;
- XSYMBOL (sym)->value = val;
+ SET_SYMBOL_VALUE (sym, val);
}
\f
/* Record the value of load-path used at the start of dumping
load_descriptor_list = Qnil;
Vstandard_input = Qt;
+ Vloads_in_progress = Qnil;
}
/* Print a warning, using format string FORMAT, that directory DIRNAME
Initialized based on EMACSLOADPATH environment variable, if any,\n\
otherwise to default specified by file `epaths.h' when Emacs was built.");
+ DEFVAR_LISP ("load-suffixes", &Vload_suffixes,
+ "*List of suffixes to try for files to load.\n\
+This list should not include the empty string.");
+ Vload_suffixes = Fcons (build_string (".elc"),
+ Fcons (build_string (".el"), Qnil));
+ /* We don't use empty_string because it's not initialized yet. */
+ default_suffixes = Fcons (build_string (""), Qnil);
+ staticpro (&default_suffixes);
+
DEFVAR_BOOL ("load-in-progress", &load_in_progress,
"Non-nil iff inside of `load'.");
FILENAME must match exactly! Normally FILENAME is the name of a library,\n\
with no directory specified, since that is how `load' is normally called.\n\
An error in FORMS does not undo the load,\n\
-but does prevent execution of the rest of the FORMS.");
+but does prevent execution of the rest of the FORMS.\n\
+FILENAME can also be a symbol (a feature) and FORMS are then executed\n\
+when the corresponding call to `provide' is made.");
Vafter_load_alist = Qnil;
DEFVAR_LISP ("load-history", &Vload_history,
except for one element (optional) that starts with nil and describes\n\
definitions evaluated from buffers not visiting files.\n\
The remaining elements of each list are symbols defined as functions\n\
-or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.");
+or variables, and cons cells `(provide . FEATURE)', `(require . FEATURE)',\n\
+and `(autoload . SYMBOL)'.");
Vload_history = Qnil;
DEFVAR_LISP ("load-file-name", &Vload_file_name,
load_force_doc_strings = 0;
DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte,
- "Non-nil means `load' converts strings to unibyte whenever possible.\n\
-This is normally used in `load-with-code-conversion'\n\
-for loading non-compiled files.");
+ "Non-nil means `read' converts strings to unibyte whenever possible.\n\
+This is normally bound by `load' and `eval-buffer' to control `read',\n\
+and is not meant for users to change.");
load_convert_to_unibyte = 0;
DEFVAR_LISP ("source-directory", &Vsource_directory,
them.");
load_dangerous_libraries = 0;
- Vbytecomp_version_regexp = build_string ("^;;;.in Emacs version");
- staticpro (&Vbytecomp_version_regexp);
+ DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp,
+ "Regular expression matching safe to load compiled Lisp files.\n\
+When Emacs loads a compiled Lisp file, it reads the first 512 bytes\n\
+from the file, and matches them against this regular expression.\n\
+When the regular expression matches, the file is considered to be safe\n\
+to load. See also `load-dangerous-libraries'.");
+ Vbytecomp_version_regexp
+ = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)");
+
+ DEFVAR_LISP ("recursive-load-depth-limit", &Vrecursive_load_depth_limit,
+ "Limit for depth of recursive loads.\n\
+Value should be either an integer > 0 specifying the limit, or nil for\n\
+no limit.");
+ Vrecursive_load_depth_limit = make_number (50);
/* Vsource_directory was initialized in init_lread. */
read_objects = Qnil;
staticpro (&seen_list);
+ Vloads_in_progress = Qnil;
+ staticpro (&Vloads_in_progress);
}
HCoop / bpt / emacs.git / blobdiff