-/* Record indices of function doc strings stored in a file.
+/* Record indices of function doc strings stored in a file. -*- coding: utf-8 -*-
-Copyright (C) 1985-1986, 1993-1995, 1997-2015 Free Software Foundation,
+Copyright (C) 1985-1986, 1993-1995, 1997-2016 Free Software Foundation,
Inc.
This file is part of GNU Emacs.
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 "lisp.h"
#include "character.h"
+#include "coding.h"
#include "buffer.h"
-#include "keyboard.h"
+#include "disptab.h"
#include "keymap.h"
/* Buffer used for reading from documentation file. */
#endif
if (fd < 0)
{
+ if (errno == EMFILE || errno == ENFILE)
+ report_file_error ("Read error on documentation file", file);
+
SAFE_FREE ();
AUTO_STRING (cannot_open, "Cannot open doc string file \"");
AUTO_STRING (quote_nl, "\"\n");
if (NILP (tem) && try_reload)
{
/* The file is newer, we need to reset the pointers. */
- struct gcpro gcpro1, gcpro2;
- GCPRO2 (function, raw);
try_reload = reread_doc_file (Fcar_safe (doc));
- UNGCPRO;
if (try_reload)
{
try_reload = 0;
if (NILP (tem) && try_reload)
{
/* The file is newer, we need to reset the pointers. */
- struct gcpro gcpro1, gcpro2, gcpro3;
- GCPRO3 (symbol, prop, raw);
try_reload = reread_doc_file (Fcar_safe (doc));
- UNGCPRO;
if (try_reload)
{
try_reload = 0;
return unbind_to (count, Qnil);
}
\f
+/* Return true if text quoting style should default to quote `like this'. */
+static bool
+default_to_grave_quoting_style (void)
+{
+ if (!text_quoting_flag)
+ return true;
+ if (! DISP_TABLE_P (Vstandard_display_table))
+ return false;
+ Lisp_Object dv = DISP_CHAR_VECTOR (XCHAR_TABLE (Vstandard_display_table),
+ LEFT_SINGLE_QUOTATION_MARK);
+ return (VECTORP (dv) && ASIZE (dv) == 1
+ && EQ (AREF (dv, 0), make_number ('`')));
+}
+
+/* Return the current effective text quoting style. */
+enum text_quoting_style
+text_quoting_style (void)
+{
+ if (NILP (Vtext_quoting_style)
+ ? default_to_grave_quoting_style ()
+ : EQ (Vtext_quoting_style, Qgrave))
+ return GRAVE_QUOTING_STYLE;
+ else if (EQ (Vtext_quoting_style, Qstraight))
+ return STRAIGHT_QUOTING_STYLE;
+ else
+ return CURVE_QUOTING_STYLE;
+}
+
DEFUN ("substitute-command-keys", Fsubstitute_command_keys,
Ssubstitute_command_keys, 1, 1, 0,
doc: /* Substitute key descriptions for command names in STRING.
Each substring of the form \\=\\<MAPVAR> specifies the use of MAPVAR
as the keymap for future \\=\\[COMMAND] substrings.
-Each \\=` is replaced by ‘. Each ' preceded by \\=` and without
-intervening ' is replaced by ’.
+Each \\=‘ and \\=` is replaced by left quote, and each \\=’ and \\='
+is replaced by right quote. Left and right quote characters are
+specified by `text-quoting-style'.
\\=\\= quotes the following character and is discarded; thus,
\\=\\=\\=\\= puts \\=\\= into the output, \\=\\=\\=\\[ puts \\=\\[ into the output, and
{
char *buf;
bool changed = false;
- bool in_quote = false;
unsigned char *strp;
char *bufp;
ptrdiff_t idx;
ptrdiff_t bsize;
Lisp_Object tem;
Lisp_Object keymap;
- unsigned char *start;
+ unsigned char const *start;
ptrdiff_t length, length_byte;
Lisp_Object name;
- struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
bool multibyte;
ptrdiff_t nchars;
tem = Qnil;
keymap = Qnil;
name = Qnil;
- GCPRO4 (string, tem, keymap, name);
+
+ enum text_quoting_style quoting_style = text_quoting_style ();
multibyte = STRING_MULTIBYTE (string);
nchars = 0;
\<foo> just sets the keymap used for \[cmd]. */
else if (strp[0] == '\\' && (strp[1] == '{' || strp[1] == '<'))
{
- struct buffer *oldbuf;
- ptrdiff_t start_idx;
+ {
/* This is for computing the SHADOWS arg for describe_map_tree. */
Lisp_Object active_maps = Fcurrent_active_maps (Qnil, Qnil);
- Lisp_Object earlier_maps;
ptrdiff_t count = SPECPDL_INDEX ();
strp += 2; /* skip \{ or \< */
start = strp;
- start_idx = start - SDATA (string);
+ ptrdiff_t start_idx = start - SDATA (string);
while ((strp - SDATA (string) < SBYTES (string))
&& *strp != '}' && *strp != '>')
}
/* Now switch to a temp buffer. */
- oldbuf = current_buffer;
+ struct buffer *oldbuf = current_buffer;
set_buffer_internal (XBUFFER (Vprin1_to_string_buffer));
/* This is for an unusual case where some after-change
function uses 'format' or 'prin1' or something else that
if (NILP (tem))
{
name = Fsymbol_name (name);
- insert_string ("\nUses keymap `");
+ AUTO_STRING (msg_prefix, "\nUses keymap `");
+ insert1 (Fsubstitute_command_keys (msg_prefix));
insert_from_string (name, 0, 0,
SCHARS (name),
SBYTES (name), 1);
- insert_string ("', which is not currently defined.\n");
+ AUTO_STRING (msg_suffix, "', which is not currently defined.\n");
+ insert1 (Fsubstitute_command_keys (msg_suffix));
if (start[-1] == '<') keymap = Qnil;
}
else if (start[-1] == '<')
{
/* Get the list of active keymaps that precede this one.
If this one's not active, get nil. */
- earlier_maps = Fcdr (Fmemq (tem, Freverse (active_maps)));
+ Lisp_Object earlier_maps
+ = Fcdr (Fmemq (tem, Freverse (active_maps)));
describe_map_tree (tem, 1, Fnreverse (earlier_maps),
Qnil, 0, 1, 0, 0, 1);
}
Ferase_buffer ();
set_buffer_internal (oldbuf);
unbind_to (count, Qnil);
+ }
subst_string:
start = SDATA (tem);
strp = SDATA (string) + idx;
}
}
- else if (strp[0] == '`')
+ else if ((strp[0] == '`' || strp[0] == '\'')
+ && quoting_style == CURVE_QUOTING_STYLE)
{
- in_quote = true;
- start = (unsigned char *) "\xE2\x80\x98"; /* ‘ */
- subst_quote:
+ start = (unsigned char const *) (strp[0] == '`' ? uLSQM : uRSQM);
length = 1;
- length_byte = 3;
+ length_byte = sizeof uLSQM - 1;
idx = strp - SDATA (string) + 1;
goto subst;
}
- else if (strp[0] == '\'' && in_quote)
+ else if (strp[0] == '`' && quoting_style == STRAIGHT_QUOTING_STYLE)
{
- in_quote = false;
- start = (unsigned char *) "\xE2\x80\x99"; /* ’ */
- goto subst_quote;
+ *bufp++ = '\'';
+ strp++;
+ nchars++;
+ changed = true;
}
- else if (! multibyte) /* just copy other chars */
+ else if (! multibyte)
*bufp++ = *strp++, nchars++;
else
{
int len;
-
- STRING_CHAR_AND_LENGTH (strp, len);
- if (len == 1)
- *bufp = *strp;
+ int ch = STRING_CHAR_AND_LENGTH (strp, len);
+ if ((ch == LEFT_SINGLE_QUOTATION_MARK
+ || ch == RIGHT_SINGLE_QUOTATION_MARK)
+ && quoting_style != CURVE_QUOTING_STYLE)
+ {
+ *bufp++ = ((ch == LEFT_SINGLE_QUOTATION_MARK
+ && quoting_style == GRAVE_QUOTING_STYLE)
+ ? '`' : '\'');
+ strp += len;
+ changed = true;
+ }
else
- memcpy (bufp, strp, len);
- strp += len;
- bufp += len;
+ {
+ do
+ *bufp++ = *strp++;
+ while (--len != 0);
+ }
nchars++;
}
}
else
tem = string;
xfree (buf);
- RETURN_UNGCPRO (tem);
+ return tem;
}
\f
void
syms_of_doc (void)
{
DEFSYM (Qfunction_documentation, "function-documentation");
+ DEFSYM (Qgrave, "grave");
+ DEFSYM (Qstraight, "straight");
DEFVAR_LISP ("internal-doc-file-name", Vdoc_file_name,
doc: /* Name of file containing documentation strings of built-in symbols. */);
doc: /* A list of files used to build this Emacs binary. */);
Vbuild_files = Qnil;
+ DEFVAR_LISP ("text-quoting-style", Vtext_quoting_style,
+ doc: /* Style to use for single quotes in help and messages.
+Its value should be a symbol.
+`curve' means quote with curved single quotes \\=‘like this\\=’.
+`straight' means quote with straight apostrophes \\='like this\\='.
+`grave' means quote with grave accent and apostrophe \\=`like this\\='.
+The default value nil acts like `curve' if curved single quotes are
+displayable, and like `grave' otherwise. */);
+ Vtext_quoting_style = Qnil;
+
+ DEFVAR_BOOL ("internal--text-quoting-flag", text_quoting_flag,
+ doc: /* If nil, a nil `text-quoting-style' is treated as `grave'. */);
+ /* Initialized by ‘main’. */
+
defsubr (&Sdocumentation);
defsubr (&Sdocumentation_property);
defsubr (&Ssnarf_documentation);