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option.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* Code to handle user-settable options. This is all pretty much table-
* driven. Checklist for adding a new option:
* - Put it in the options array in optiondefs.h (copy an existing entry).
* - For a global option: Add a variable for it in option.h.
* - For a buffer or window local option:
* - Add a PV_XX macro definition to the optiondefs.h file.
* - Add a variable to the window or buffer struct in structs.h.
* - For a window option, add some code to copy_winopt().
* - For a window string option, add code to check_win_options() and
* clear_winopt().
* - For a buffer option, add some code to buf_copy_options().
* - For a buffer string option, add code to check_buf_options().
* - If it's a numeric option, add any necessary bounds checks to
* set_num_option().
* - If it's a list of flags, add some code in did_set_string_option(), search
* for WW_ALL.
* - When adding an option with expansion (P_EXPAND), but with a different
* default for Vi and Vim (no P_VI_DEF), add some code at VIMEXP.
* - Add documentation! One line in doc/quickref.txt, full description in
* options.txt, and any other related places.
* - Add an entry in runtime/optwin.vim.
* When making changes:
* - Adjust the help for the option in doc/option.txt.
* - When an entry has the P_VIM flag, or is lacking the P_VI_DEF flag, add a
* comment at the help for the 'compatible' option.
*/
#define IN_OPTION_C
#include "vim.h"
#include "optiondefs.h"
static void set_options_default(int opt_flags);
static void set_string_default_esc(char *name, char_u *val, int escape);
static char_u *find_dup_item(char_u *origval, char_u *newval, size_t newvallen, long_u flags);
static char_u *option_expand(int opt_idx, char_u *val);
static void didset_options(void);
static void didset_options2(void);
#if defined(FEAT_EVAL) || defined(PROTO)
static long_u *insecure_flag(int opt_idx, int opt_flags);
#else
# define insecure_flag(opt_idx, opt_flags) (&options[opt_idx].flags)
#endif
static char *set_bool_option(int opt_idx, char_u *varp, int value, int opt_flags);
static char *set_num_option(int opt_idx, char_u *varp, long value, char *errbuf, size_t errbuflen, int opt_flags);
static int find_key_option(char_u *arg_arg, int has_lt);
static void showoptions(int all, int opt_flags);
static int optval_default(struct vimoption *, char_u *varp, int compatible);
static void showoneopt(struct vimoption *, int opt_flags);
static int put_setstring(FILE *fd, char *cmd, char *name, char_u **valuep, long_u flags);
static int put_setnum(FILE *fd, char *cmd, char *name, long *valuep);
static int put_setbool(FILE *fd, char *cmd, char *name, int value);
static int istermoption(struct vimoption *p);
static char_u *get_varp_scope(struct vimoption *p, int scope);
static char_u *get_varp(struct vimoption *);
static void check_win_options(win_T *win);
static void option_value2string(struct vimoption *, int scope);
static void check_winopt(winopt_T *wop);
static int wc_use_keyname(char_u *varp, long *wcp);
static void compatible_set(void);
#if defined(FEAT_EVAL) || defined(PROTO)
static char *(p_bin_dep_opts[]) = {"textwidth", "wrapmargin", "modeline", "expandtab", NULL};
static char *(p_paste_dep_opts[]) = {"autoindent", "expandtab", "ruler", "showmatch", "smarttab",
"softtabstop", "textwidth", "wrapmargin",
#ifdef FEAT_RIGHTLEFT
"hkmap", "revins",
#endif
#ifdef FEAT_VARTABS
"varsofttabstop",
#endif
NULL};
static void didset_options_sctx(int opt_flags, char **buf);
#endif
/*
* Initialize the 'shell' option to a default value.
*/
static void
set_init_default_shell(void)
{
char_u *p;
// Find default value for 'shell' option.
// Don't use it if it is empty.
if (((p = mch_getenv((char_u *)"SHELL")) != NULL && *p != NUL)
#if defined(MSWIN)
|| ((p = mch_getenv((char_u *)"COMSPEC")) != NULL && *p != NUL)
|| ((p = (char_u *)default_shell()) != NULL && *p != NUL)
#endif
)
#if defined(MSWIN)
{
// For MS-Windows put the path in quotes instead of escaping spaces.
char_u *cmd;
size_t len;
if (vim_strchr(p, ' ') != NULL)
{
len = STRLEN(p) + 3; // two quotes and a trailing NUL
cmd = alloc(len);
if (cmd != NULL)
{
vim_snprintf((char *)cmd, len, "\"%s\"", p);
set_string_default("sh", cmd);
vim_free(cmd);
}
}
else
set_string_default("sh", p);
}
#else
set_string_default_esc("sh", p, TRUE);
#endif
}
/*
* Set the default for 'backupskip' to include environment variables for
* temp files.
*/
static void
set_init_default_backupskip(void)
{
int opt_idx;
int i;
char_u *p;
int plen;
#ifdef UNIX
static char *(names[4]) = {"", "TMPDIR", "TEMP", "TMP"};
#else
static char *(names[3]) = {"TMPDIR", "TEMP", "TMP"};
#endif
garray_T ga;
opt_idx = findoption((char_u *)"backupskip");
ga_init2(&ga, 1, 100);
for (i = 0; i < (int)ARRAY_LENGTH(names); ++i)
{
int mustfree = FALSE;
#ifdef UNIX
if (*names[i] == NUL)
{
# ifdef MACOS_X
p = (char_u *)"/private/tmp";
plen = (int)STRLEN_LITERAL("/private/tmp");
# else
p = (char_u *)"/tmp";
plen = (int)STRLEN_LITERAL("/tmp");
# endif
}
else
#endif
{
p = vim_getenv((char_u *)names[i], &mustfree);
plen = 0; // will be calculated below
}
if (p != NULL && *p != NUL)
{
char_u *item;
size_t itemsize;
int has_trailing_path_sep = FALSE;
if (plen == 0)
{
// the value was retrieved from the environment
plen = (int)STRLEN(p);
// does the value include a trailing path separator?
if (after_pathsep(p, p + plen))
has_trailing_path_sep = TRUE;
}
// item size needs to be large enough to include "/*" and a trailing NUL
// note: the value (and therefore plen) may already include a path separator
itemsize = plen + (has_trailing_path_sep ? 0 : 1) + 2;
item = alloc(itemsize);
if (item != NULL)
{
// add a preceding comma as a separator after the first item
size_t itemseplen = (ga.ga_len == 0) ? 0 : 1;
size_t itemlen;
itemlen = vim_snprintf((char *)item, itemsize, "%s%s*", p, (has_trailing_path_sep) ? "" : PATHSEPSTR);
if (find_dup_item(ga.ga_data, item, itemlen, options[opt_idx].flags) == NULL
&& ga_grow(&ga, (int)(itemseplen + itemlen + 1)) == OK)
{
ga.ga_len += vim_snprintf((char *)ga.ga_data + ga.ga_len,
itemseplen + itemlen + 1,
"%s%s", (itemseplen > 0) ? "," : "", item);
}
vim_free(item);
}
}
if (mustfree)
vim_free(p);
}
if (ga.ga_data != NULL)
{
set_string_default("bsk", ga.ga_data);
vim_free(ga.ga_data);
}
}
/*
* Initialize the 'maxmemtot' and 'maxmem' options to a default value.
* 'maxmemtot' and 'maxmem' may have to be adjusted for available memory.
*/
static void
set_init_default_maxmemtot(void)
{
int opt_idx;
long_u n;
opt_idx = findoption((char_u *)"maxmemtot");
if (opt_idx < 0)
return;
#if !defined(HAVE_AVAIL_MEM) && !defined(HAVE_TOTAL_MEM)
if (options[opt_idx].def_val[VI_DEFAULT] == (char_u *)0L)
#endif
{
#if defined(HAVE_AVAIL_MEM)
// Use amount of memory available at this moment.
n = (mch_avail_mem(FALSE) >> 1);
#elif defined(HAVE_TOTAL_MEM)
// Use amount of memory available to Vim.
n = (mch_total_mem(FALSE) >> 1);
#else
n = (0x7fffffff >> 11);
#endif
options[opt_idx].def_val[VI_DEFAULT] = (char_u *)n;
opt_idx = findoption((char_u *)"maxmem");
if (opt_idx >= 0)
{
#if !defined(HAVE_AVAIL_MEM) && !defined(HAVE_TOTAL_MEM)
if ((long)(long_i)options[opt_idx].def_val[VI_DEFAULT] > (long)n
|| (long)(long_i)options[opt_idx].def_val[VI_DEFAULT] == 0L)
#endif
options[opt_idx].def_val[VI_DEFAULT] = (char_u *)n;
}
}
}
/*
* Initialize the 'cdpath' option to a default value.
*/
static void
set_init_default_cdpath(void)
{
int opt_idx;
char_u *cdpath;
char_u *buf;
int i;
int j;
int mustfree = FALSE;
cdpath = vim_getenv((char_u *)"CDPATH", &mustfree);
if (cdpath == NULL)
return;
buf = alloc((STRLEN(cdpath) << 1) + 2);
if (buf != NULL)
{
buf[0] = ','; // start with ",", current dir first
j = 1;
for (i = 0; cdpath[i] != NUL; ++i)
{
if (vim_ispathlistsep(cdpath[i]))
buf[j++] = ',';
else
{
if (cdpath[i] == ' ' || cdpath[i] == ',')
buf[j++] = '\\';
buf[j++] = cdpath[i];
}
}
buf[j] = NUL;
opt_idx = findoption((char_u *)"cdpath");
if (opt_idx >= 0)
{
options[opt_idx].def_val[VI_DEFAULT] = buf;
options[opt_idx].flags |= P_DEF_ALLOCED;
}
else
vim_free(buf); // cannot happen
}
if (mustfree)
vim_free(cdpath);
}
/*
* Initialize the 'printencoding' option to a default value.
*/
static void
set_init_default_printencoding(void)
{
#if defined(FEAT_POSTSCRIPT) && \
(defined(MSWIN) || defined(VMS) || defined(MAC) || defined(hpux))
// Set print encoding on platforms that don't default to latin1
set_string_default("penc",
# if defined(MSWIN)
(char_u *)"cp1252"
# elif defined(VMS)
(char_u *)"dec-mcs"
# elif defined(MAC)
(char_u *)"mac-roman"
# else // HPUX
(char_u *)"hp-roman8"
# endif
);
#endif
}
#ifdef FEAT_POSTSCRIPT
/*
* Initialize the 'printexpr' option to a default value.
*/
static void
set_init_default_printexpr(void)
{
// 'printexpr' must be allocated to be able to evaluate it.
set_string_default("pexpr",
# if defined(MSWIN)
(char_u *)"system('copy' . ' ' . v:fname_in . (&printdevice == '' ? ' LPT1:' : (' \"' . &printdevice . '\"'))) . delete(v:fname_in)"
# elif defined(VMS)
(char_u *)"system('print/delete' . (&printdevice == '' ? '' : ' /queue=' . &printdevice) . ' ' . v:fname_in)"
# else
(char_u *)"system('lpr' . (&printdevice == '' ? '' : ' -P' . &printdevice) . ' ' . v:fname_in) . delete(v:fname_in) + v:shell_error"
# endif
);
}
#endif
#ifdef UNIX
/*
* Force restricted-mode on for "nologin" or "false" $SHELL
*/
static void
set_init_restricted_mode(void)
{
char_u *p;
p = get_isolated_shell_name();
if (p == NULL)
return;
if (fnamecmp(p, "nologin") == 0 || fnamecmp(p, "false") == 0)
restricted = TRUE;
vim_free(p);
}
#endif
#ifdef CLEAN_RUNTIMEPATH
/*
* When Vim is started with the "--clean" argument, set the default value
* for the 'runtimepath' and 'packpath' options.
*/
static void
set_init_clean_rtp(void)
{
int opt_idx;
opt_idx = findoption((char_u *)"runtimepath");
if (opt_idx >= 0)
{
options[opt_idx].def_val[VI_DEFAULT] = (char_u *)CLEAN_RUNTIMEPATH;
p_rtp = (char_u *)CLEAN_RUNTIMEPATH;
}
opt_idx = findoption((char_u *)"packpath");
if (opt_idx < 0)
return;
options[opt_idx].def_val[VI_DEFAULT] = (char_u *)CLEAN_RUNTIMEPATH;
p_pp = (char_u *)CLEAN_RUNTIMEPATH;
}
#endif
#ifdef UNIX
/*
* Change 'runtimepath' and 'packdir' to '$XDG_CONFIG_HOME/vim' if the only
* vimrc found is located in '$XDG_CONFIG_HOME/vim/vimrc'.
* In case the '$XDG_CONFIG_HOME' variable is not set, '$HOME/.config' is used
* as a fallback as is defined in the XDG base dir specification:
* <https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html>
*/
static void
set_init_xdg_rtp(void)
{
int opt_idx;
int has_xdg_env = TRUE;
int should_free_xdg_dir = FALSE;
char_u *vimrc1 = NULL;
char_u *vimrc2 = NULL;
char_u *xdg_dir = NULL;
char_u *xdg_rtp = NULL;
char_u *vimrc_xdg = NULL;
// initialize chartab, so we can expand $HOME
(void)init_chartab();
vimrc1 = expand_env_save((char_u *)USR_VIMRC_FILE);
vimrc2 = expand_env_save((char_u *)USR_VIMRC_FILE2);
xdg_dir = mch_getenv("XDG_CONFIG_HOME");
if (!xdg_dir)
{
xdg_dir = expand_env_save((char_u *)"~/.config");
should_free_xdg_dir = TRUE;
has_xdg_env = FALSE;
}
vimrc_xdg = concat_fnames(xdg_dir, (char_u *)"vim/vimrc", TRUE);
if (file_is_readable(vimrc1) || file_is_readable(vimrc2) ||
!file_is_readable(vimrc_xdg))
goto theend;
xdg_rtp = has_xdg_env ? (char_u *)XDG_RUNTIMEPATH
: (char_u *)XDG_RUNTIMEPATH_FB;
if ((opt_idx = findoption((char_u *)"runtimepath")) < 0)
goto theend;
options[opt_idx].def_val[VI_DEFAULT] = xdg_rtp;
p_rtp = xdg_rtp;
if ((opt_idx = findoption((char_u *)"packpath")) < 0)
goto theend;
options[opt_idx].def_val[VI_DEFAULT] = xdg_rtp;
p_pp = xdg_rtp;
#if defined(XDG_VDIR) && defined(FEAT_SESSION)
if ((opt_idx = findoption((char_u *)"viewdir")) < 0)
goto theend;
options[opt_idx].def_val[VI_DEFAULT] = (char_u *)XDG_VDIR;
p_vdir = (char_u *)XDG_VDIR;
#endif
theend:
vim_free(vimrc1);
vim_free(vimrc2);
vim_free(vimrc_xdg);
if (should_free_xdg_dir)
vim_free(xdg_dir);
}
#endif
/*
* Expand environment variables and things like "~" for the defaults.
* If option_expand() returns non-NULL the variable is expanded. This can
* only happen for non-indirect options.
* Also set the default to the expanded value, so ":set" does not list
* them.
* Don't set the P_ALLOCED flag, because we don't want to free the
* default.
*/
static void
set_init_expand_env(void)
{
int opt_idx;
char_u *p;
for (opt_idx = 0; !istermoption_idx(opt_idx); opt_idx++)
{
if ((options[opt_idx].flags & P_GETTEXT)
&& options[opt_idx].var != NULL)
p = (char_u *)_(*(char **)options[opt_idx].var);
else
p = option_expand(opt_idx, NULL);
if (p != NULL && (p = vim_strsave(p)) != NULL)
{
*(char_u **)options[opt_idx].var = p;
// VIMEXP
// Defaults for all expanded options are currently the same for Vi
// and Vim. When this changes, add some code here! Also need to
// split P_DEF_ALLOCED in two.
if (options[opt_idx].flags & P_DEF_ALLOCED)
vim_free(options[opt_idx].def_val[VI_DEFAULT]);
options[opt_idx].def_val[VI_DEFAULT] = p;
options[opt_idx].flags |= P_DEF_ALLOCED;
}
}
}
/*
* Initialize the 'LANG' environment variable to a default value.
*/
static void
set_init_lang_env(void)
{
#if defined(MSWIN) && defined(FEAT_GETTEXT)
// If $LANG isn't set, try to get a good value for it. This makes the
// right language be used automatically. Don't do this for English.
if (mch_getenv((char_u *)"LANG") == NULL)
{
char buf[20];
long_u n;
// Could use LOCALE_SISO639LANGNAME, but it's not in Win95.
// LOCALE_SABBREVLANGNAME gives us three letters, like "enu", we use
// only the first two.
n = GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SABBREVLANGNAME,
(LPTSTR)buf, 20);
if (n >= 2 && STRNICMP(buf, "en", 2) != 0)
{
// There are a few exceptions (probably more)
if (STRNICMP(buf, "cht", 3) == 0 || STRNICMP(buf, "zht", 3) == 0)
STRCPY(buf, "zh_TW");
else if (STRNICMP(buf, "chs", 3) == 0
|| STRNICMP(buf, "zhc", 3) == 0)
STRCPY(buf, "zh_CN");
else if (STRNICMP(buf, "jp", 2) == 0)
STRCPY(buf, "ja");
else
buf[2] = NUL; // truncate to two-letter code
vim_setenv((char_u *)"LANG", (char_u *)buf);
}
}
#elif defined(MACOS_CONVERT)
// Moved to os_mac_conv.c to avoid dependency problems.
mac_lang_init();
#endif
}
/*
* Initialize the 'encoding' option to a default value.
*/
static void
set_init_default_encoding(void)
{
char_u *p;
int opt_idx;
# if defined(MSWIN) || defined(__MVS__)
// MS-Windows has builtin support for conversion to and from Unicode, using
// "utf-8" for 'encoding' should work best for most users.
// z/OS built should default to UTF-8 mode as setlocale does not respect utf-8 environment variable locales
p = vim_strnsave((char_u *)ENC_DFLT, STRLEN_LITERAL(ENC_DFLT));
# else
// enc_locale() will try to find the encoding of the current locale.
// This works best for properly configured systems, old and new.
p = enc_locale();
# endif
if (p == NULL)
return;
// Try setting 'encoding' and check if the value is valid.
// If not, go back to the default encoding.
char_u *save_enc = p_enc;
p_enc = p;
if (STRCMP(p_enc, "gb18030") == 0)
{
// We don't support "gb18030", but "cp936" is a good substitute
// for practical purposes, thus use that. It's not an alias to
// still support conversion between gb18030 and utf-8.
p_enc = vim_strnsave((char_u *)"cp936", STRLEN_LITERAL("cp936"));
vim_free(p);
}
if (mb_init() == NULL)
{
opt_idx = findoption((char_u *)"encoding");
if (opt_idx >= 0)
{
options[opt_idx].def_val[VI_DEFAULT] = p_enc;
options[opt_idx].flags |= P_DEF_ALLOCED;
}
#if defined(MSWIN) || defined(MACOS_X) || defined(VMS)
if (STRCMP(p_enc, "latin1") == 0 || enc_utf8)
{
// Adjust the default for 'isprint' and 'iskeyword' to match
// latin1. Also set the defaults for when 'nocompatible' is
// set.
set_string_option_direct((char_u *)"isp", -1,
ISP_LATIN1, OPT_FREE, SID_NONE);
set_string_option_direct((char_u *)"isk", -1,
ISK_LATIN1, OPT_FREE, SID_NONE);
opt_idx = findoption((char_u *)"isp");
if (opt_idx >= 0)
options[opt_idx].def_val[VIM_DEFAULT] = ISP_LATIN1;
opt_idx = findoption((char_u *)"isk");
if (opt_idx >= 0)
options[opt_idx].def_val[VIM_DEFAULT] = ISK_LATIN1;
(void)init_chartab();
}
#endif
#if defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL))
// Win32 console: When GetACP() returns a different value from
// GetConsoleCP() set 'termencoding'.
if (
# ifdef VIMDLL
(!gui.in_use && !gui.starting) &&
# endif
GetACP() != GetConsoleCP())
{
char buf[50];
size_t buflen;
// Win32 console: In ConPTY, GetConsoleCP() returns zero.
// Use an alternative value.
if (GetConsoleCP() == 0)
buflen = vim_snprintf(buf, sizeof(buf), "cp%ld", (long)GetACP());
else
buflen = vim_snprintf(buf, sizeof(buf), "cp%ld", (long)GetConsoleCP());
p_tenc = vim_strnsave((char_u *)buf, buflen);
if (p_tenc != NULL)
{
opt_idx = findoption((char_u *)"termencoding");
if (opt_idx >= 0)
{
options[opt_idx].def_val[VI_DEFAULT] = p_tenc;
options[opt_idx].flags |= P_DEF_ALLOCED;
}
convert_setup(&input_conv, p_tenc, p_enc);
convert_setup(&output_conv, p_enc, p_tenc);
}
else
p_tenc = empty_option;
}
#endif
#if defined(MSWIN)
// $HOME may have characters in active code page.
init_homedir();
#endif
}
else
{
vim_free(p_enc);
p_enc = save_enc;
}
}
/*
* Initialize the options, first part.
*
* Called only once from main(), just after creating the first buffer.
* If "clean_arg" is TRUE Vim was started with --clean.
*/
void
set_init_1(int clean_arg)
{
#ifdef FEAT_LANGMAP
langmap_init();
#endif
// Be Vi compatible by default
p_cp = TRUE;
// Use POSIX compatibility when $VIM_POSIX is set.
if (mch_getenv((char_u *)"VIM_POSIX") != NULL)
{
set_string_default("cpo", (char_u *)CPO_ALL);
set_string_default("shm", (char_u *)SHM_POSIX);
}
set_init_default_shell();
set_init_default_backupskip();
set_init_default_maxmemtot();
set_init_default_cdpath();
set_init_default_printencoding();
#ifdef FEAT_POSTSCRIPT
set_init_default_printexpr();
#endif
/*
* Set all the options (except the terminal options) to their default
* value. Also set the global value for local options.
*/
set_options_default(0);
#ifdef UNIX
set_init_xdg_rtp();
set_init_restricted_mode();
#endif
#ifdef CLEAN_RUNTIMEPATH
if (clean_arg)
set_init_clean_rtp();
#endif
#ifdef FEAT_GUI
if (found_reverse_arg)
set_option_value_give_err((char_u *)"bg", 0L, (char_u *)"dark", 0);
#endif
curbuf->b_p_initialized = TRUE;
curbuf->b_p_ar = -1; // no local 'autoread' value
curbuf->b_p_ul = NO_LOCAL_UNDOLEVEL;
check_buf_options(curbuf);
check_win_options(curwin);
check_options();
// Must be before option_expand(), because that one needs vim_isIDc()
didset_options();
#ifdef FEAT_SPELL
// Use the current chartab for the generic chartab. This is not in
// didset_options() because it only depends on 'encoding'.
init_spell_chartab();
#endif
set_init_default_encoding();
// Expand environment variables and things like "~" for the defaults.
set_init_expand_env();
save_file_ff(curbuf); // Buffer is unchanged
#if defined(FEAT_ARABIC)
// Detect use of mlterm.
// Mlterm is a terminal emulator akin to xterm that has some special
// abilities (bidi namely).
// NOTE: mlterm's author is being asked to 'set' a variable
// instead of an environment variable due to inheritance.
if (mch_getenv((char_u *)"MLTERM") != NULL)
set_option_value_give_err((char_u *)"tbidi", 1L, NULL, 0);
#endif
didset_options2();
set_init_lang_env();
#ifdef FEAT_MULTI_LANG
// Set the default for 'helplang'.
set_helplang_default(get_mess_lang());
#endif
}
static char_u *fencs_utf8_default = (char_u *)"ucs-bom,utf-8,default,latin1";
/*
* Set the "fileencodings" option to the default value for when 'encoding' is
* utf-8.
*/
void
set_fencs_unicode(void)
{
set_string_option_direct((char_u *)"fencs", -1, fencs_utf8_default,
OPT_FREE, 0);
}
/*
* Set an option to its default value.
* This does not take care of side effects!
*/
static void
set_option_default(
int opt_idx,
int opt_flags, // OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL
int compatible) // use Vi default value
{
char_u *varp; // pointer to variable for current option
int dvi; // index in def_val[]
long_u flags;
long_u *flagsp;
int both = (opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0;
varp = get_varp_scope(&(options[opt_idx]), both ? OPT_LOCAL : opt_flags);
flags = options[opt_idx].flags;
if (varp != NULL) // skip hidden option, nothing to do for it
{
dvi = ((flags & P_VI_DEF) || compatible) ? VI_DEFAULT : VIM_DEFAULT;
if (flags & P_STRING)
{
// 'fencs' default value depends on 'encoding'
if (options[opt_idx].var == (char_u *)&p_fencs && enc_utf8)
set_fencs_unicode();
// Use set_string_option_direct() for local options to handle
// freeing and allocating the value.
else if (options[opt_idx].indir != PV_NONE)
set_string_option_direct(NULL, opt_idx,
options[opt_idx].def_val[dvi], opt_flags, 0);
else
{
if ((opt_flags & OPT_FREE) && (flags & P_ALLOCED))
free_string_option(*(char_u **)(varp));
*(char_u **)varp = options[opt_idx].def_val[dvi];
options[opt_idx].flags &= ~P_ALLOCED;
}
}
else if (flags & P_NUM)
{
if (options[opt_idx].indir == PV_SCROLL)
win_comp_scroll(curwin);
else
{
long def_val = (long)(long_i)options[opt_idx].def_val[dvi];
if ((long *)varp == &curwin->w_p_so
|| (long *)varp == &curwin->w_p_siso)
// 'scrolloff' and 'sidescrolloff' local values have a
// different default value than the global default.
*(long *)varp = -1;
else
*(long *)varp = def_val;
// May also set global value for local option.
if (both)
*(long *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) =
def_val;
}
}
else // P_BOOL
{
// the cast to long is required for Manx C, long_i is needed for
// MSVC
*(int *)varp = (int)(long)(long_i)options[opt_idx].def_val[dvi];
#ifdef UNIX
// 'modeline' defaults to off for root
if (options[opt_idx].indir == PV_ML && getuid() == ROOT_UID)
*(int *)varp = FALSE;
#endif
// May also set global value for local option.
if (both)
*(int *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) =
*(int *)varp;
}
// The default value is not insecure.
flagsp = insecure_flag(opt_idx, opt_flags);
*flagsp = *flagsp & ~P_INSECURE;
}
#ifdef FEAT_EVAL
set_option_sctx_idx(opt_idx, opt_flags, current_sctx);
#endif
}
/*
* Set all options (except terminal options) to their default value.
* When "opt_flags" is non-zero skip 'encoding'.
*/
static void
set_options_default(
int opt_flags) // OPT_FREE, OPT_LOCAL and/or OPT_GLOBAL
{
int i;
win_T *wp;
tabpage_T *tp;
for (i = 0; !istermoption_idx(i); i++)
if (!(options[i].flags & P_NODEFAULT)
&& (opt_flags == 0
|| (options[i].var != (char_u *)&p_enc
# if defined(FEAT_CRYPT)
&& options[i].var != (char_u *)&p_cm
&& options[i].var != (char_u *)&p_key
# endif
)))
set_option_default(i, opt_flags, p_cp);
// The 'scroll' option must be computed for all windows.
FOR_ALL_TAB_WINDOWS(tp, wp)
win_comp_scroll(wp);
parse_cino(curbuf);
}
/*
* Set the Vi-default value of a string option.
* Used for 'sh', 'backupskip' and 'term'.
* When "escape" is TRUE escape spaces with a backslash.
*/
static void
set_string_default_esc(char *name, char_u *val, int escape)
{
char_u *p;
int opt_idx;
if (escape && vim_strchr(val, ' ') != NULL)
p = vim_strsave_escaped(val, (char_u *)" ");
else
p = vim_strsave(val);
if (p == NULL) // we don't want a NULL
return;
opt_idx = findoption((char_u *)name);
if (opt_idx < 0)
{
vim_free(p);
return;
}
if (options[opt_idx].flags & P_DEF_ALLOCED)
vim_free(options[opt_idx].def_val[VI_DEFAULT]);
options[opt_idx].def_val[VI_DEFAULT] = p;
options[opt_idx].flags |= P_DEF_ALLOCED;
}
void
set_string_default(char *name, char_u *val)
{
set_string_default_esc(name, val, FALSE);
}
/*
* For an option value that contains comma separated items, find "newval" in
* "origval". Return NULL if not found.
*/
static char_u *
find_dup_item(char_u *origval, char_u *newval, size_t newvallen, long_u flags)
{
int bs = 0;
char_u *s;
if (origval == NULL)
return NULL;
for (s = origval; *s != NUL; ++s)
{
if ((!(flags & P_COMMA)
|| s == origval
|| (s[-1] == ',' && !(bs & 1)))
&& STRNCMP(s, newval, newvallen) == 0
&& (!(flags & P_COMMA)
|| s[newvallen] == ','
|| s[newvallen] == NUL))
return s;
// Count backslashes. Only a comma with an even number of backslashes
// or a single backslash preceded by a comma before it is recognized as
// a separator.
if ((s > origval + 1
&& s[-1] == '\\'
&& s[-2] != ',')
|| (s == origval + 1
&& s[-1] == '\\'))
++bs;
else
bs = 0;
}
return NULL;
}
/*
* Set the Vi-default value of a number option.
* Used for 'lines' and 'columns'.
*/
void
set_number_default(char *name, long val)
{
int opt_idx;
opt_idx = findoption((char_u *)name);
if (opt_idx >= 0)
options[opt_idx].def_val[VI_DEFAULT] = (char_u *)(long_i)val;
}
#if defined(FEAT_PROP_POPUP) || defined(PROTO)
/*
* Set all window-local and buffer-local options to the Vim default.
* local-global options will use the global value.
* When "do_buffer" is FALSE don't set buffer-local options.
*/
void
set_local_options_default(win_T *wp, int do_buffer)
{
win_T *save_curwin = curwin;
int i;
curwin = wp;
curbuf = curwin->w_buffer;
block_autocmds();
for (i = 0; !istermoption_idx(i); i++)
{
struct vimoption *p = &(options[i]);
char_u *varp = get_varp_scope(p, OPT_LOCAL);
if (p->indir != PV_NONE
&& (do_buffer || (p->indir & PV_BUF) == 0)
&& !(options[i].flags & P_NODEFAULT)
&& !optval_default(p, varp, FALSE))
set_option_default(i, OPT_FREE|OPT_LOCAL, FALSE);
}
unblock_autocmds();
curwin = save_curwin;
curbuf = curwin->w_buffer;
}
#endif
#if defined(EXITFREE) || defined(PROTO)
/*
* Free all options.
*/
void
free_all_options(void)
{
int i;
for (i = 0; !istermoption_idx(i); i++)