GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
#include "character.h"
#include "buffer.h"
#include "charset.h"
-#include "coding.h"
#include <epaths.h>
#include "commands.h"
#include "keyboard.h"
#include "systime.h"
#include "termhooks.h"
#include "blockinput.h"
+#include <c-ctype.h>
#ifdef MSDOS
#include "msdos.h"
+#if __DJGPP__ == 2 && __DJGPP_MINOR__ < 5
+# define INFINITY __builtin_inf()
+# define NAN __builtin_nan("")
+#endif
#endif
#ifdef HAVE_NS
return c;
}
- if (CONSP (readcharfun))
+ if (CONSP (readcharfun) && STRINGP (XCAR (readcharfun)))
{
/* This is the case that read_vector is reading from a unibyte
string that contains a byte sequence previously skipped
read_from_string_index_byte
= string_char_to_byte (readcharfun, read_from_string_index);
}
- else if (CONSP (readcharfun))
+ else if (CONSP (readcharfun) && STRINGP (XCAR (readcharfun)))
{
unread_char = c;
}
{
FILE *stream;
int fd;
- int fd_index;
+ int fd_index UNINIT;
ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object found, efound, hist_file_name;
/* True means we printed the ".el is newer" message. */
#endif
}
- if (fd < 0)
- {
- /* Pacify older GCC with --enable-gcc-warnings. */
- IF_LINT (fd_index = 0);
- }
- else
+ if (0 <= fd)
{
fd_index = SPECPDL_INDEX ();
record_unwind_protect_int (close_file_unwind, fd);
specbind (Qold_style_backquotes, Qnil);
record_unwind_protect (load_warn_old_style_backquotes, file);
- if (suffix_p (found, ".elc") || (fd >= 0 && (version = safe_to_load_version (fd)) > 0))
+ int is_elc;
+ if ((is_elc = suffix_p (found, ".elc")) != 0
+ /* version = 1 means the file is empty, in which case we can
+ treat it as not byte-compiled. */
+ || (fd >= 0 && (version = safe_to_load_version (fd)) > 1))
/* Load .elc files directly, but not when they are
remote and have no handler! */
{
/* openp already checked for newness, no point doing it again.
FIXME would be nice to get a message when openp
ignores suffix order due to load_prefer_newer. */
- if (!load_prefer_newer)
+ if (!load_prefer_newer && is_elc)
{
result = stat (SSDATA (efound), &s1);
if (result == 0)
for (; CONSP (path); path = XCDR (path))
{
+ ptrdiff_t baselen, prefixlen;
+
filename = Fexpand_file_name (str, XCAR (path));
if (!complete_filename_p (filename))
/* If there are non-absolute elts in PATH (eg "."). */
fn = SAFE_ALLOCA (fn_size);
}
+ /* Copy FILENAME's data to FN but remove starting /: if any. */
+ prefixlen = ((SCHARS (filename) > 2
+ && SREF (filename, 0) == '/'
+ && SREF (filename, 1) == ':')
+ ? 2 : 0);
+ baselen = SBYTES (filename) - prefixlen;
+ memcpy (fn, SDATA (filename) + prefixlen, baselen);
+
/* Loop over suffixes. */
for (tail = NILP (suffixes) ? list1 (empty_unibyte_string) : suffixes;
CONSP (tail); tail = XCDR (tail))
ptrdiff_t fnlen, lsuffix = SBYTES (suffix);
Lisp_Object handler;
- /* Concatenate path element/specified name with the suffix.
- If the directory starts with /:, remove that. */
- int prefixlen = ((SCHARS (filename) > 2
- && SREF (filename, 0) == '/'
- && SREF (filename, 1) == ':')
- ? 2 : 0);
- fnlen = SBYTES (filename) - prefixlen;
- memcpy (fn, SDATA (filename) + prefixlen, fnlen);
- memcpy (fn + fnlen, SDATA (suffix), lsuffix + 1);
- fnlen += lsuffix;
+ /* Make complete filename by appending SUFFIX. */
+ memcpy (fn + baselen, SDATA (suffix), lsuffix + 1);
+ fnlen = baselen + lsuffix;
+
/* Check that the file exists and is not a directory. */
/* We used to only check for handlers on non-absolute file names:
if (absolute)
}
else
{
- int oflags = O_RDONLY + (NILP (predicate) ? 0 : O_BINARY);
- fd = emacs_open (pfn, oflags, 0);
+ fd = emacs_open (pfn, O_RDONLY, 0);
if (fd < 0)
{
if (errno != ENOENT)
FINAL-STRING-INDEX is an integer giving the position of the next
remaining character in STRING. START and END optionally delimit
a substring of STRING from which to read; they default to 0 and
-(length STRING) respectively. Negative values are counted from
+\(length STRING) respectively. Negative values are counted from
the end of STRING. */)
(Lisp_Object string, Lisp_Object start, Lisp_Object end)
{
MAX_MULTIBYTE_LENGTH, -1, 1);
}
+/* Return the scalar value that has the Unicode character name NAME.
+ Raise 'invalid-read-syntax' if there is no such character. */
+static int
+character_name_to_code (char const *name, ptrdiff_t name_len)
+{
+ /* For "U+XXXX", pass the leading '+' to string_to_number to reject
+ monstrosities like "U+-0000". */
+ Lisp_Object code
+ = (name[0] == 'U' && name[1] == '+'
+ ? string_to_number (name + 1, 16, false)
+ : call2 (Qchar_from_name, make_unibyte_string (name, name_len), Qt));
+
+ if (! RANGED_INTEGERP (0, code, MAX_UNICODE_CHAR)
+ || char_surrogate_p (XINT (code)))
+ {
+ AUTO_STRING (format, "\\N{%s}");
+ AUTO_STRING_WITH_LEN (namestr, name, name_len);
+ xsignal1 (Qinvalid_read_syntax, CALLN (Fformat, format, namestr));
+ }
+
+ return XINT (code);
+}
+
+/* Bound on the length of a Unicode character name. As of
+ Unicode 9.0.0 the maximum is 83, so this should be safe. */
+enum { UNICODE_CHARACTER_NAME_LENGTH_BOUND = 200 };
+
/* Read a \-escape sequence, assuming we already read the `\'.
If the escape sequence forces unibyte, return eight-bit char. */
return i;
}
+ case 'N':
+ /* Named character. */
+ {
+ c = READCHAR;
+ if (c != '{')
+ invalid_syntax ("Expected opening brace after \\N");
+ char name[UNICODE_CHARACTER_NAME_LENGTH_BOUND + 1];
+ bool whitespace = false;
+ ptrdiff_t length = 0;
+ while (true)
+ {
+ c = READCHAR;
+ if (c < 0)
+ end_of_file_error ();
+ if (c == '}')
+ break;
+ if (! (0 < c && c < 0x80))
+ {
+ AUTO_STRING (format,
+ "Invalid character U+%04X in character name");
+ xsignal1 (Qinvalid_read_syntax,
+ CALLN (Fformat, format, make_natnum (c)));
+ }
+ /* Treat multiple adjacent whitespace characters as a
+ single space character. This makes it easier to use
+ character names in e.g. multi-line strings. */
+ if (c_isspace (c))
+ {
+ if (whitespace)
+ continue;
+ c = ' ';
+ whitespace = true;
+ }
+ else
+ whitespace = false;
+ name[length++] = c;
+ if (length >= sizeof name)
+ invalid_syntax ("Character name too long");
+ }
+ if (length == 0)
+ invalid_syntax ("Empty character name");
+ name[length] = '\0';
+ return character_name_to_code (name, length);
+ }
+
default:
return c;
}
Lisp_Object
check_obarray (Lisp_Object obarray)
{
- if (!VECTORP (obarray) || ASIZE (obarray) == 0)
+ /* We don't want to signal a wrong-type-argument error when we are
+ shutting down due to a fatal error, and we don't want to hit
+ assertions in VECTORP and ASIZE if the fatal error was during GC. */
+ if (!fatal_error_in_progress
+ && (!VECTORP (obarray) || ASIZE (obarray) == 0))
{
/* If Vobarray is now invalid, force it to be valid. */
if (EQ (Vobarray, obarray)) Vobarray = initial_obarray;
dir_warning (char const *use, Lisp_Object dirname)
{
static char const format[] = "Warning: %s '%s': %s\n";
- int access_errno = errno;
- fprintf (stderr, format, use, SSDATA (ENCODE_SYSTEM (dirname)),
- strerror (access_errno));
+ char *diagnostic = emacs_strerror (errno);
+ fprintf (stderr, format, use, SSDATA (ENCODE_SYSTEM (dirname)), diagnostic);
/* Don't log the warning before we've initialized!! */
if (initialized)
{
- char const *diagnostic = emacs_strerror (access_errno);
+ ptrdiff_t diaglen = strlen (diagnostic);
+ AUTO_STRING_WITH_LEN (diag, diagnostic, diaglen);
+ if (! NILP (Vlocale_coding_system))
+ {
+ Lisp_Object s
+ = code_convert_string_norecord (diag, Vlocale_coding_system, false);
+ diagnostic = SSDATA (s);
+ diaglen = SBYTES (s);
+ }
USE_SAFE_ALLOCA;
char *buffer = SAFE_ALLOCA (sizeof format - 3 * (sizeof "%s" - 1)
- + strlen (use) + SBYTES (dirname)
- + strlen (diagnostic));
+ + strlen (use) + SBYTES (dirname) + diaglen);
ptrdiff_t message_len = esprintf (buffer, format, use, SSDATA (dirname),
diagnostic);
message_dolog (buffer, message_len, 0, STRING_MULTIBYTE (dirname));
doc: /* List of directories to search for files to load.
Each element is a string (directory file name) or nil (meaning
`default-directory').
+This list is consulted by the `require' function.
Initialized during startup as described in Info node `(elisp)Library Search'.
Use `directory-file-name' when adding items to this path. However, Lisp
programs that process this list should tolerate directories both with
DEFSYM (Qweakness, "weakness");
DEFSYM (Qrehash_size, "rehash-size");
DEFSYM (Qrehash_threshold, "rehash-threshold");
+
+ DEFSYM (Qchar_from_name, "char-from-name");
}