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exconfig.c
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exconfig.c
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/* exconfig.c */
/* Copyright 1995 by Steve Kirkendall */
#include "elvis.h"
#ifdef FEATURE_RCSID
char id_exconfig[] = "$Id: exconfig.c,v 2.154 2004/03/21 23:24:41 steve Exp $";
#endif
/* This variable stores the current state of ex's control structures. */
EXCTLSTATE exctlstate;
static MAPFLAGS maphelp2 P_((CHAR **refcp, char *word, MAPFLAGS flag));
static MAPFLAGS maphelp P_((CHAR **refcp, CHAR **mode));
static CHAR *equaltilde P_((CHAR *value, int len, CHAR *cmd));
#ifdef FEATURE_ALIAS
/* These are used for storing aliases */
typedef struct alias_s
{
struct alias_s *next; /* some other alias */
char *name; /* name of this alias */
CHAR *command; /* commands for this alias */
ELVBOOL inuse; /* is this alias already being run? */
ELVBOOL internal; /* save in .exrc file? */
} alias_t;
BEGIN_EXTERNC
static void listalias P_((WINDOW win, alias_t *alias, ELVBOOL shortformat));
static void buildarg P_((CHAR **cmd, CHAR *arg, long len, CHAR *defarg, long deflen, ELVBOOL quote));
END_EXTERNC
static alias_t *aliases; /* This is the head of a list of aliases */
# ifdef FEATURE_COMPLETE
/* Return the name of an alias, by number. If there is no such alias then
* return NULL. This is used only by the name completion code in ex.c.
*/
char *exaliasname(i)
int i;
{
alias_t *alias;
for (alias = aliases; --i >= 0 && alias; alias = alias->next)
{
}
return alias ? alias->name : NULL;
}
# endif /* FEATURE_COMPLETE */
/* look up a name in the alias list. The name can be terminated with any
* non-alphanumeric character, not just '\0'. Return its name if alias,
* or NULL otherwise. Optionally ignore if already in use.
*/
char *exisalias(name, inuse)
char *name; /* name of a command, maybe an alias */
ELVBOOL inuse; /* find even if in use? (else hide in-use aliases) */
{
alias_t *alias;
/* look for alias */
for (alias = aliases; alias; alias = alias->next)
if (!strcmp(name, alias->name))
return (alias->inuse && !inuse) ? NULL : alias->name;
return NULL;
}
/* list a single alias */
static void listalias(win, alias, shortformat)
WINDOW win;
alias_t *alias;
ELVBOOL shortformat;
{
CHAR ch[4];
CHAR *start;
int len;
int indent;
drawexlist(win, toCHAR(alias->name), strlen(alias->name));
if (CHARchr(alias->command, '\n') == alias->command + CHARlen(alias->command) - 1)
{
/* single-line command simply follows the alias name */
drawexlist(win, blanks, 10 - (CHARlen(alias->name) % 10));
drawexlist(win, alias->command, CHARlen(alias->command));
}
else if (shortformat)
{
/* multi-line command, but only show first line */
drawexlist(win, blanks, 10 - (CHARlen(alias->name) % 10));
ch[0] = '{';
ch[1] = ' ';
drawexlist(win, ch, 2);
for (start = alias->command, len = 0;
*start++ != '\n' && len < o_columns(win) - 16;
len++)
{
}
drawexlist(win, alias->command, len);
ch[0] = ch[1] = ch[2] = '.';
ch[3] = '\n';
drawexlist(win, ch, 4);
}
else
{
/* multi-line command is output in a fancy way */
ch[0] = ' ';
ch[1] = '{';
ch[2] = '\n';
drawexlist(win, ch, 3);
indent = 4;
for (start = alias->command, len = 0; *start; len++)
{
if (start[len] == '\n')
{
drawexlist(win, blanks, indent);
drawexlist(win, start, len);
ch[0] = '\n';
drawexlist(win, ch, 1);
start += len + 1;
if (len > 1 && indent + 2 < QTY(blanks) && start[-2] == '{')
indent += 2;
if (indent > 4 && *start == '}')
indent -= 2;
len = -1; /* will be incremented to 0 by for()*/
}
}
ch[0] = '}';
ch[1] = '\n';
drawexlist(win, ch, 2);
}
}
/* maintain the alias list */
RESULT ex_alias(xinf)
EXINFO *xinf;
{
alias_t *newalias, *alias, *lag;
int i;
/* if no aliases named, then list all */
if (!xinf->lhs)
{
for (alias = aliases; alias; alias = alias->next)
{
if (xinf->bang == alias->internal)
listalias(xinf->window, alias, ElvTrue);
}
return RESULT_COMPLETE;
}
/* Try to find the named alias */
for (lag = NULL, alias = aliases;
alias && CHARcmp(xinf->lhs, toCHAR(alias->name));
lag = alias, alias = alias->next)
{
}
/* Unaliasing? */
if (xinf->command == EX_UNALIAS)
{
if (alias)
{
/* safety check */
if (alias->inuse)
{
msg(MSG_ERROR, "[s]can't unalias $1 because it is in use", alias->name);
return RESULT_ERROR;
}
/* remove it from the list, and free it */
if (lag)
lag->next = alias->next;
else
aliases = alias->next;
safefree(alias->name);
safefree(alias->command);
safefree(alias);
}
return RESULT_COMPLETE;
}
/* listing one specific alias? */
if (!xinf->rhs)
{
if (!alias)
msg(MSG_WARNING, "[S]no alias named $1", xinf->lhs);
else
listalias(xinf->window, alias, ElvFalse);
return RESULT_COMPLETE;
}
/* safety check */
if (alias && alias->inuse)
{
msg(MSG_ERROR, "[s]can't redefine $1 because it is in use", alias->name);
return RESULT_ERROR;
}
/* verify that the name contains only alphanumeric characters */
for (i = 0; xinf->lhs[i]; i++)
{
if (!elvalnum(xinf->lhs[i]))
{
msg(MSG_ERROR, "alias names must be alphanumeric");
return RESULT_ERROR;
}
}
/* create or alter an alias */
if (alias)
safefree(alias->command);
else
{
/* find the aliases before & after it, in ASCII order */
for (lag = NULL, alias = aliases;
alias && CHARcmp(xinf->lhs, toCHAR(alias->name)) > 0;
lag = alias, alias = alias->next)
{
}
/* allocate the new alias, and insert it into the list */
newalias = (alias_t *)safekept(1, sizeof *alias);
newalias->next = alias;
if (lag)
lag->next = newalias;
else
aliases = newalias;
newalias->name = safekdup(tochar8(xinf->lhs));
alias = newalias;
}
#ifdef DEBUG_ALLOC
alias->command = CHARkdup(xinf->rhs);
#else
alias->command = xinf->rhs;
xinf->rhs = NULL;
#endif
alias->internal = xinf->bang;
return RESULT_COMPLETE;
}
/* Add an argument to cmd, by calling buildCHAR() repeatedly. */
static void buildarg(cmd, arg, len, defarg, deflen, quote)
CHAR **cmd; /* the resulting string */
CHAR *arg; /* the arg to add */
long len; /* length of arg */
CHAR *defarg;/* default, used if len == 0 */
long deflen; /* length of defarg */
ELVBOOL quote; /* should backslashes be inserted? */
{
long i;
/* if normal arg is empty, then use defarg without quoting */
if (len == 0)
{
arg = defarg;
len = deflen;
quote = ElvFalse;
}
/* copy characters, with optional quoting */
for (i = 0; i < len; i++, arg++)
{
if (quote && (*arg == '\\' || (o_magicchar && CHARchr(o_magicchar, *arg))))
buildCHAR(cmd, '\\');
buildCHAR(cmd, *arg);
}
}
/* Execute an alias */
RESULT ex_doalias(xinf)
EXINFO *xinf;
{
alias_t *alias;
CHAR *cmd, *str, *defarg, *name;
CHAR *mustfree;
CHAR *args[11];
long lens[11];
long deflen;
long namelen;
int i, j;
char num[24];
ELVBOOL inword;
ELVBOOL anyargs, anyaddr, anybang;
ELVBOOL multiline;
ELVBOOL quote;
RESULT result = RESULT_ERROR;
#ifdef FEATURE_AUTOCMD
void *popopt;
#endif
/* Find the alias. It *will* exist, and use the same name pointer */
for (alias = aliases; alias->name != xinf->cmdname; alias = alias->next)
{
}
/* parse the args, if any. args[0] is the whole argument string, and
* args[1] through args[9] are the first 9 words from that string.
*/
memset(lens, 0, sizeof lens);
mustfree = NULL;
if (xinf->rhs)
{
args[0] = xinf->rhs;
lens[0] = CHARlen(args[0]);
#ifdef FEATURE_PROTO
if (xinf->command == EX_DOPROTO)
{
/* parsing a URL -- skip the protocol, if given */
str = xinf->rhs;
for (i = 0; elvalpha(str[i]); i++)
{
}
if (i > 0 && str[i] == ':')
str += i + 1;
/* parsing a URL -- first part is machine name */
if (str[0] == '/' && str[1] == '/')
{
args[1] = str += 2;
while (*str && *str != ':' && *str != '/' && *str != '?')
str++;
lens[1] = (int)(str - args[1]);
if (*str == ':')
do
{
str++;
} while (elvdigit(*str));
}
/* next is the resource name */
args[2] = str;
while (*str && *str != '#' && *str != '?')
str++;
lens[2] = (int)(str - args[2]);
/* next is the anchor name */
if (*str == '#')
{
str++;
args[3] = str;
lens[3] = CHARlen(str);
str += lens[3];
}
/* remainder is '&'-delimited, URL-encoded params */
if (*str == '?' && str[1])
{
/* URL-decode the params, remembering lengths */
for (str++, i = 4; i < 9 && *str; str++)
{
switch (*str)
{
case '&':
if (lens[i] > 0)
i++;
break;
case '+':
buildCHAR(&mustfree, ' ');
lens[i]++;
break;
case '%':
if (elvxdigit(str[1]) && elvxdigit(str[2]))
{
str++;
if (elvdigit(*str))
j = *str - '0';
else
j = (*str - 'A' + 10) & 0x0f;
j <<= 4;
str++;
if (elvdigit(*str))
j = *str - '0';
else
j = (*str - 'A' + 10) & 0x0f;
buildCHAR(&mustfree, j);
lens[i]++;
break;
}
/* else fall through... */
default:
buildCHAR(&mustfree, *str);
lens[i]++;
}
}
/* use lengths to find start of each param */
for (j = 4, str = mustfree; j <= i; j++)
{
args[j] = str;
str += lens[j];
}
}
}
else /* EX_DOALIAS */
#endif /* FEATURE_PROTO */
{
args[1] = args[0];
for (i = 1, inword = ElvTrue, str = args[0]; *str && i < 10; str++)
{
if (inword)
{
if (elvspace(*str))
inword = ElvFalse;
else
lens[i]++;
}
else if (!elvspace(*str))
{
args[++i] = str;
lens[i] = 1;
inword = ElvTrue;
}
}
}
}
/* Any missing args are zero-length */
for (i = 1; i < QTY(args); i++)
if (lens[i] == 0)
args[i] = args[0] + lens[0];
/* Build a copy of the command string, with !0-!9 replaced by args[0]
* through args[9].
*/
anyargs = anyaddr = anybang = multiline = ElvFalse;
for (cmd = NULL, str = alias->command; *str; str++)
{
/* if not '!' then it can't be an arg substitution */
if (*str != '!')
{
buildCHAR(&cmd, *str);
if (*str == '\n' && str[1])
multiline = ElvTrue;
continue;
}
/* Allow an optional ':' after the '!'. Also allow an optional
* \ which causes backslashes to be inserted before certain
* characters in the expansion.
*/
quote = ElvFalse;
deflen = 0;
defarg = args[0]; /* anything but NULL, really */
str++;
name = NULL;
namelen = 0;
while (*str == ':' || *str == '\\' || *str == '(' || elvalpha(*str))
{
if (*str == ':')
str++;
else if (*str == '\\')
str++, quote = ElvTrue;
else if (*str == '(')
{
str++;
defarg = str;
for (deflen = 0; *str != ')'; deflen++)
{
if (!*str || *str == '\n')
{
msg(MSG_ERROR, "malformed !() in alias $1", alias->name);
if (cmd)
safefree(cmd);
if (mustfree)
safefree(mustfree);
return RESULT_ERROR;
}
str++;
}
str++;
}
else /* elvalpha(*str) -- only works for !name= and !name& */
{
name = str;
for (namelen = 1; elvalnum(name[namelen]); namelen++)
{
}
if (name[namelen]=='=' || name[namelen]=='&')
str += namelen;
else
{
name = NULL;
break;
}
}
}
/* which substitution is being requested? */
switch (*str)
{
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
/* insert an argument */
i = *str - '0';
if (str[1] == '*')
{
/* !n* includes all items from !n to !$ */
str++;
buildarg(&cmd, args[i], lens[0] - (int)(args[i] - args[0]), defarg, deflen, quote);
}
else
buildarg(&cmd, args[i], lens[i], defarg, deflen, quote);
anyargs = ElvTrue;
break;
case '*':
/* insert the whole argument string */
buildarg(&cmd, args[0], lens[0], defarg, deflen, quote);
anyargs = ElvTrue;
break;
case '^':
/* insert the first argument string */
buildarg(&cmd, args[1], lens[1], defarg, deflen, quote);
anyargs = ElvTrue;
break;
case '$':
/* insert the last argument string */
for (i = 1; i < QTY(lens) - 1 && lens[i + 1] > 0; i++)
{
}
if (str[1] == '*')
{
/* !$* includes all items from !1 to !$-1 */
str++;
if (i != 1)
buildarg(&cmd, args[0], lens[i - 1] + (int)(args[i - 1] - args[0]), defarg, deflen, quote);
}
else
buildarg(&cmd, args[i], lens[i], defarg, deflen, quote);
anyargs = ElvTrue;
break;
case '!':
buildCHAR(&cmd, '!');
break;
case '?':
if (xinf->bang)
buildCHAR(&cmd, '!');
anybang = ElvTrue;
break;
case '<':
if (xinf->anyaddr)
{
sprintf(num, "%ld", xinf->from);
buildstr(&cmd, num);
}
else
buildarg(&cmd, NULL, 0, defarg, deflen, quote);
anyaddr = ElvTrue;
break;
case '>':
if (xinf->anyaddr)
{
sprintf(num, "%ld", xinf->to);
buildstr(&cmd, num);
}
else
buildarg(&cmd, NULL, 0, defarg, deflen, quote);
anyaddr = ElvTrue;
break;
case '%':
if (xinf->anyaddr)
{
sprintf(num, "%ld,%ld", xinf->from, xinf->to);
buildstr(&cmd, num);
}
else
buildarg(&cmd, NULL, 0, defarg, deflen, quote);
anyaddr = ElvTrue;
break;
case '=':
case '&':
/* If just "!=" with no name, then insert "!=" */
if (!name)
{
buildCHAR(&cmd, '!');
buildCHAR(&cmd, *str);
break;
}
/* find a named arg & insert it (else use default) */
for (i = 1;
i <= 9 && (lens[i] <= namelen
|| CHARncmp(args[i], name, (int)namelen)
|| args[i][namelen] != '=');
i++)
{
}
if (i <= 9)
{
if (*str == '=')
{
buildarg(&cmd, args[i] + namelen+1,
lens[i] - (namelen+1),
defarg, deflen, quote);
}
else
{
for (name = args[i] + (namelen+1),
j = lens[i] - (namelen+1);
--j >= 0;
name++)
{
switch (*name)
{
case '\t': buildstr(&cmd, "%09"); break;
case '+': buildstr(&cmd, "%2B"); break;
case '"': buildstr(&cmd, "%22"); break;
case '%': buildstr(&cmd, "%25"); break;
case '<': buildstr(&cmd, "%3C"); break;
case '>': buildstr(&cmd, "%3E"); break;
case ' ': buildCHAR(&cmd, '+'); break;
default: buildCHAR(&cmd, *name);
}
}
}
}
else
buildarg(&cmd, NULL, 0, defarg, deflen, quote);
anyargs = ElvTrue;
break;
default:
/* no substitution -- use a literal ! character */
if (str[-1] == ':')
buildCHAR(&cmd, '!');
buildCHAR(&cmd, str[-1]);
buildCHAR(&cmd, *str);
}
}
/* don't need the mustfree strings anymore */
if (mustfree)
safefree(mustfree);
/* If command contained no !n strings, but the alias was invoked with
* arguments, then append the arguments to the last command line.
*/
if (xinf->command == EX_DOALIAS && !anyargs && !multiline && lens[0] > 0)
{
cmd[CHARlen(cmd) - 1] = ' '; /* convert newline to space */
buildarg(&cmd, args[0], lens[0], args[0], lens[0], ElvFalse);
buildCHAR(&cmd, '\n');
anyargs = ElvTrue;
}
/* Detect usage errors */
if (xinf->command == EX_DOALIAS && xinf->bang && !anybang)
msg(MSG_ERROR, "[s]the $1 alias doesn't use a ! suffix", alias->name);
else if (xinf->command == EX_DOALIAS && xinf->anyaddr && !anyaddr)
msg(MSG_ERROR, "[s]the $1 alias doesn't use addresses", alias->name);
else if (xinf->command == EX_DOALIAS && lens[0] > 0 && !anyargs)
msg(MSG_ERROR, "[s]the $1 alias doesn't use arguments", alias->name);
else
{
/* No errors - Run the command. Mark it as being "in use"
* while it is running, to prevent recursion. If autocmd is
* supported, then do an AliasEnter event immediately after
* starting a :local context, and AliasLeave before restoring
* options to their non-local values. This allws AliasEnter
* to use :local for settings that only affect the alias. Note
* that exstring() also has its own internal :local logic, but
* the duplication doesn't cost much and keeps exstring()'s
* interface simple.
*/
alias->inuse = ElvTrue;
# ifdef FEATURE_AUTOCMD
# ifdef FEATURE_MISC
popopt = optlocal(NULL);
# endif
(void)auperform(xinf->window, ElvFalse, NULL, AU_ALIASENTER, toCHAR(alias->name));
# endif
result = exstring(xinf->window, cmd, alias->name);
# ifdef FEATURE_AUTOCMD
(void)auperform(xinf->window, ElvFalse, NULL, AU_ALIASLEAVE, toCHAR(alias->name));
# ifdef FEATURE_MISC
(void)optlocal(popopt);
# endif
# endif
alias->inuse = ElvFalse;
}
/* Free the copy of the command string */
safefree(cmd);
return result;
}
# ifdef FEATURE_MKEXRC
/* add user aliases to end of buffer */
void exaliassave(custom)
BUFFER custom; /* the buffer to which the :au commands are added */
{
ELVBOOL anyout; /* any groups output yet? */
alias_t *alias;
CHAR *cmd, *word;
/* for each alias... */
anyout = ElvFalse;
for (alias = aliases; alias; alias = alias->next)
{
/* skip if standard - we don't need to save it since the
* standard initialization scripts will recreate it each time
* elvis is run anyway.
*/
if (alias->internal)
continue;
/* if first alias, output "try {" */
if (!anyout)
{
anyout = ElvTrue;
bufappend(custom, toCHAR("try {\n"), 6);
}
/* construct an alias command string */
cmd = NULL;
buildstr(&cmd, " alias ");
buildstr(&cmd, alias->name);
buildCHAR(&cmd, ' ');
word = alias->command;
if (CHARchr(word, '\n') == word + CHARlen(word) - 1)
{
/* single line - output it including final \n */
for ( ; *word; word++)
{
if (*word == ELVCTRL('V') || *word == '\033')
buildCHAR(&cmd, ELVCTRL('V'));
buildCHAR(&cmd, *word);
}
}
else
{
/* multi-line - add explicit {} around it */
buildstr(&cmd, "{\n ");
for ( ; *word; word++)
{
if (*word == ELVCTRL('V') || *word == '\033')
buildCHAR(&cmd, ELVCTRL('V'));
buildCHAR(&cmd, *word);
if (*word == '\n' && word[1])
buildstr(&cmd, " ");
}
buildstr(&cmd, " }\n");
}
/* add the command to the buffer */
bufappend(custom, cmd, 0);
/* free the string form of the command */
safefree(cmd);
} /* for alias */
/* if any groups were output, then we need to end "try {" */
if (anyout)
{
bufappend(custom, toCHAR("}\n"), 2);
}
}
# endif /* FEATURE_MKEXRC */
#endif /* FEATURE_ALIAS */
RESULT ex_args(xinf)
EXINFO *xinf;
{
int i, col, len;
char **tmp;
/* were we given a new args list? */
if (xinf->nfiles > 0)
{
/* yes, use it */
tmp = arglist;
arglist = xinf->file;
xinf->file = tmp;
for (xinf->nfiles = 0; xinf->file[xinf->nfiles]; xinf->nfiles++)
{
}
argnext = 0;
}
else
{
/* show current args list */
for (i = col = 0; arglist[i]; i++)
{
len = strlen(arglist[i]);
/* whitespace between args */
if (i == 0)
; /* no space is needed */
else if (col + len + 4 > o_columns(xinf->window))
{
drawexlist(xinf->window, toCHAR("\n"), 1);
col = 0;
}
else
{
drawexlist(xinf->window, toCHAR(" "), 1);
col++;
}
/* Output the arg. If current, enclose in '[' */
if (i == argnext - 1)
drawexlist(xinf->window, toCHAR("["), 1);
drawexlist(xinf->window, toCHAR(arglist[i]), len);
if (i == argnext - 1)
drawexlist(xinf->window, toCHAR("]"), 1);
col += len;
}
/* the final newline */
drawexlist(xinf->window, toCHAR("\n"), 1);
}
return RESULT_COMPLETE;
}
/* This function implements the :color command. */
RESULT ex_color(xinf)
EXINFO *xinf;
{
int i;
WINDOW win;
CHAR *lhs;
/* If this GUI doesn't support colors, then do nothing */
if (!gui->color)
{
if (xinf->bang)
return RESULT_COMPLETE;
msg(MSG_ERROR, "the (gui) user interface doesn't support colors");
return RESULT_ERROR;
}
/* If "gui.role", where "gui" is the current GUI, then strip that off */
lhs = xinf->lhs;
i = CHARlen(o_gui);
if (lhs && !CHARncmp(lhs, o_gui, i) && lhs[i] == '.' && lhs[i + 1])
lhs += i + 1;
if (!xinf->rhs)
{
/* no args, or just a role name - list the colors */
colorlist(xinf->window, lhs, xinf->bang);
}
else if (CHARchr(lhs, '.'))
{
/* setting some other GUI's colors */
if (!xinf->bang)
colorforeign(lhs, xinf->rhs);
}
else
{
/* both a role and a new color definition - set the colors */
i = colorfind(lhs);
if (i == 0)
return RESULT_ERROR;
colorset(i, xinf->rhs, (ELVBOOL)!xinf->bang);
/* reset the GUI, to bypass any optimizations */
guireset();
/* Cause all windows to be redrawn from scratch */
for (win = windows; win; win = win->next)
win->di->logic = DRAW_SCRATCH;
}
return RESULT_COMPLETE;
}
RESULT ex_comment(xinf)
EXINFO *xinf;
{
#ifdef FEATURE_CALC
CHAR *result;
#endif
assert(xinf->command == EX_COMMENT || xinf->command == EX_ECHO
|| xinf->command == EX_CALC || xinf->command == EX_GOTO);
if (xinf->command == EX_ECHO && xinf->rhs)
{
drawextext(xinf->window, xinf->rhs, (int)CHARlen(xinf->rhs));
drawextext(xinf->window, toCHAR("\n"), 1);
}
#ifdef FEATURE_CALC
else if (xinf->command == EX_CALC && xinf->rhs)
{
result = calculate(xinf->rhs, NULL, CALC_ALL);
if (!result)
{
return RESULT_ERROR;
}
drawextext(xinf->window, result, (int)CHARlen(result));
drawextext(xinf->window, toCHAR("\n"), 1);
}
#endif
else if (xinf->command == EX_GOTO && xinf->fromaddr)
{
if (xinf->fromoffset > markoffset(xinf->fromaddr)
&& xinf->fromoffset <= markoffset(xinf->toaddr))
xinf->newcurs = markalloc(markbuffer(xinf->fromaddr), xinf->fromoffset);
else
xinf->newcurs = markdup(xinf->fromaddr);
}
return RESULT_COMPLETE;
}
RESULT ex_message(xinf)
EXINFO *xinf;
{
MSGIMP imp;
RESULT result;
/* choose an importance level for this message */
switch (xinf->command)
{
case EX_MESSAGE: imp = MSG_INFO; result = RESULT_COMPLETE; break;
case EX_WARNING: imp = MSG_WARNING; result = RESULT_COMPLETE; break;
case EX_ERROR: imp = MSG_ERROR; result = RESULT_ERROR; break;
default:
/* this should never happen. */
#ifndef NDEBUG
abort();
#endif
return RESULT_ERROR;
}
/* do we have a message? */
if (!xinf->rhs)
{
/* no - fake it for :error, else just return */
if (xinf->command == MSG_ERROR)
xinf->rhs = CHARdup(toCHAR("error"));
else
return result;
}
/* don't allow bracket at the beginning -- would look like args */
if (*xinf->rhs == '[')
*xinf->rhs = '{';
/* output the message, or queue it */
msg(imp, tochar8(xinf->rhs));
/* return the result code */
return result;
}
RESULT ex_digraph(xinf)
EXINFO *xinf;
{
digaction(xinf->window, xinf->bang, xinf->rhs);
return RESULT_COMPLETE;
}
/* implements the :display and :normal commands. */
RESULT ex_display(xinf)
EXINFO *xinf;
{
int len;
#ifdef FEATURE_NORMAL
long lback, last;
BUFFER buf;
RESULT result;
MARK cursor, orig;