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ex_cmds.c
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ex_cmds.c
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/* vi:set ts=8 sts=4 sw=4:
*
* 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.
*/
/*
* ex_cmds.c: some functions for command line commands
*/
#include "vim.h"
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#include "version.h"
#ifdef FEAT_EX_EXTRA
static int linelen __ARGS((int *has_tab));
#endif
static void do_filter __ARGS((linenr_T line1, linenr_T line2, exarg_T *eap, char_u *cmd, int do_in, int do_out));
#ifdef FEAT_VIMINFO
static char_u *viminfo_filename __ARGS((char_u *));
static void do_viminfo __ARGS((FILE *fp_in, FILE *fp_out, int want_info, int want_marks, int force_read));
static int viminfo_encoding __ARGS((vir_T *virp));
static int read_viminfo_up_to_marks __ARGS((vir_T *virp, int forceit, int writing));
#endif
static int check_overwrite __ARGS((exarg_T *eap, buf_T *buf, char_u *fname, char_u *ffname, int other));
static int check_readonly __ARGS((int *forceit, buf_T *buf));
#ifdef FEAT_AUTOCMD
static void delbuf_msg __ARGS((char_u *name));
#endif
static int
#ifdef __BORLANDC__
_RTLENTRYF
#endif
help_compare __ARGS((const void *s1, const void *s2));
/*
* ":ascii" and "ga".
*/
/*ARGSUSED*/
void
do_ascii(eap)
exarg_T *eap;
{
int c;
char buf1[20];
char buf2[20];
char_u buf3[7];
#ifdef FEAT_MBYTE
int cc[MAX_MCO];
int ci = 0;
int len;
if (enc_utf8)
c = utfc_ptr2char(ml_get_cursor(), cc);
else
#endif
c = gchar_cursor();
if (c == NUL)
{
MSG("NUL");
return;
}
#ifdef FEAT_MBYTE
IObuff[0] = NUL;
if (!has_mbyte || (enc_dbcs != 0 && c < 0x100) || c < 0x80)
#endif
{
if (c == NL) /* NUL is stored as NL */
c = NUL;
if (vim_isprintc_strict(c) && (c < ' '
#ifndef EBCDIC
|| c > '~'
#endif
))
{
transchar_nonprint(buf3, c);
sprintf(buf1, " <%s>", (char *)buf3);
}
else
buf1[0] = NUL;
#ifndef EBCDIC
if (c >= 0x80)
sprintf(buf2, " <M-%s>", transchar(c & 0x7f));
else
#endif
buf2[0] = NUL;
vim_snprintf((char *)IObuff, IOSIZE,
_("<%s>%s%s %d, Hex %02x, Octal %03o"),
transchar(c), buf1, buf2, c, c, c);
#ifdef FEAT_MBYTE
if (enc_utf8)
c = cc[ci++];
else
c = 0;
#endif
}
#ifdef FEAT_MBYTE
/* Repeat for combining characters. */
while (has_mbyte && (c >= 0x100 || (enc_utf8 && c >= 0x80)))
{
len = (int)STRLEN(IObuff);
/* This assumes every multi-byte char is printable... */
if (len > 0)
IObuff[len++] = ' ';
IObuff[len++] = '<';
if (enc_utf8 && utf_iscomposing(c)
# ifdef USE_GUI
&& !gui.in_use
# endif
)
IObuff[len++] = ' '; /* draw composing char on top of a space */
len += (*mb_char2bytes)(c, IObuff + len);
vim_snprintf((char *)IObuff + len, IOSIZE - len,
c < 0x10000 ? _("> %d, Hex %04x, Octal %o")
: _("> %d, Hex %08x, Octal %o"), c, c, c);
if (ci == MAX_MCO)
break;
if (enc_utf8)
c = cc[ci++];
else
c = 0;
}
#endif
msg(IObuff);
}
#if defined(FEAT_EX_EXTRA) || defined(PROTO)
/*
* ":left", ":center" and ":right": align text.
*/
void
ex_align(eap)
exarg_T *eap;
{
pos_T save_curpos;
int len;
int indent = 0;
int new_indent;
int has_tab;
int width;
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
{
/* switch left and right aligning */
if (eap->cmdidx == CMD_right)
eap->cmdidx = CMD_left;
else if (eap->cmdidx == CMD_left)
eap->cmdidx = CMD_right;
}
#endif
width = atoi((char *)eap->arg);
save_curpos = curwin->w_cursor;
if (eap->cmdidx == CMD_left) /* width is used for new indent */
{
if (width >= 0)
indent = width;
}
else
{
/*
* if 'textwidth' set, use it
* else if 'wrapmargin' set, use it
* if invalid value, use 80
*/
if (width <= 0)
width = curbuf->b_p_tw;
if (width == 0 && curbuf->b_p_wm > 0)
width = W_WIDTH(curwin) - curbuf->b_p_wm;
if (width <= 0)
width = 80;
}
if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL)
return;
for (curwin->w_cursor.lnum = eap->line1;
curwin->w_cursor.lnum <= eap->line2; ++curwin->w_cursor.lnum)
{
if (eap->cmdidx == CMD_left) /* left align */
new_indent = indent;
else
{
has_tab = FALSE; /* avoid uninit warnings */
len = linelen(eap->cmdidx == CMD_right ? &has_tab
: NULL) - get_indent();
if (len <= 0) /* skip blank lines */
continue;
if (eap->cmdidx == CMD_center)
new_indent = (width - len) / 2;
else
{
new_indent = width - len; /* right align */
/*
* Make sure that embedded TABs don't make the text go too far
* to the right.
*/
if (has_tab)
while (new_indent > 0)
{
(void)set_indent(new_indent, 0);
if (linelen(NULL) <= width)
{
/*
* Now try to move the line as much as possible to
* the right. Stop when it moves too far.
*/
do
(void)set_indent(++new_indent, 0);
while (linelen(NULL) <= width);
--new_indent;
break;
}
--new_indent;
}
}
}
if (new_indent < 0)
new_indent = 0;
(void)set_indent(new_indent, 0); /* set indent */
}
changed_lines(eap->line1, 0, eap->line2 + 1, 0L);
curwin->w_cursor = save_curpos;
beginline(BL_WHITE | BL_FIX);
}
/*
* Get the length of the current line, excluding trailing white space.
*/
static int
linelen(has_tab)
int *has_tab;
{
char_u *line;
char_u *first;
char_u *last;
int save;
int len;
/* find the first non-blank character */
line = ml_get_curline();
first = skipwhite(line);
/* find the character after the last non-blank character */
for (last = first + STRLEN(first);
last > first && vim_iswhite(last[-1]); --last)
;
save = *last;
*last = NUL;
len = linetabsize(line); /* get line length */
if (has_tab != NULL) /* check for embedded TAB */
*has_tab = (vim_strrchr(first, TAB) != NULL);
*last = save;
return len;
}
/* Buffer for two lines used during sorting. They are allocated to
* contain the longest line being sorted. */
static char_u *sortbuf1;
static char_u *sortbuf2;
static int sort_ic; /* ignore case */
static int sort_nr; /* sort on number */
static int sort_rx; /* sort on regex instead of skipping it */
static int sort_abort; /* flag to indicate if sorting has been interrupted */
/* Struct to store info to be sorted. */
typedef struct
{
linenr_T lnum; /* line number */
long start_col_nr; /* starting column number or number */
long end_col_nr; /* ending column number */
} sorti_T;
static int
#ifdef __BORLANDC__
_RTLENTRYF
#endif
sort_compare __ARGS((const void *s1, const void *s2));
static int
#ifdef __BORLANDC__
_RTLENTRYF
#endif
sort_compare(s1, s2)
const void *s1;
const void *s2;
{
sorti_T l1 = *(sorti_T *)s1;
sorti_T l2 = *(sorti_T *)s2;
int result = 0;
/* If the user interrupts, there's no way to stop qsort() immediately, but
* if we return 0 every time, qsort will assume it's done sorting and
* exit. */
if (sort_abort)
return 0;
fast_breakcheck();
if (got_int)
sort_abort = TRUE;
/* When sorting numbers "start_col_nr" is the number, not the column
* number. */
if (sort_nr)
result = l1.start_col_nr - l2.start_col_nr;
else
{
/* We need to copy one line into "sortbuf1", because there is no
* guarantee that the first pointer becomes invalid when obtaining the
* second one. */
STRNCPY(sortbuf1, ml_get(l1.lnum) + l1.start_col_nr,
l1.end_col_nr - l1.start_col_nr + 1);
sortbuf1[l1.end_col_nr - l1.start_col_nr] = 0;
STRNCPY(sortbuf2, ml_get(l2.lnum) + l2.start_col_nr,
l2.end_col_nr - l2.start_col_nr + 1);
sortbuf2[l2.end_col_nr - l2.start_col_nr] = 0;
result = sort_ic ? STRICMP(sortbuf1, sortbuf2)
: STRCMP(sortbuf1, sortbuf2);
}
/* If two lines have the same value, preserve the original line order. */
if (result == 0)
return (int)(l1.lnum - l2.lnum);
return result;
}
/*
* ":sort".
*/
void
ex_sort(eap)
exarg_T *eap;
{
regmatch_T regmatch;
int len;
linenr_T lnum;
long maxlen = 0;
sorti_T *nrs;
size_t count = eap->line2 - eap->line1 + 1;
size_t i;
char_u *p;
char_u *s;
char_u *s2;
char_u c; /* temporary character storage */
int unique = FALSE;
long deleted;
colnr_T start_col;
colnr_T end_col;
int sort_oct; /* sort on octal number */
int sort_hex; /* sort on hex number */
if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL)
return;
sortbuf1 = NULL;
sortbuf2 = NULL;
regmatch.regprog = NULL;
nrs = (sorti_T *)lalloc((long_u)(count * sizeof(sorti_T)), TRUE);
if (nrs == NULL)
goto sortend;
sort_abort = sort_ic = sort_rx = sort_nr = sort_oct = sort_hex = 0;
for (p = eap->arg; *p != NUL; ++p)
{
if (vim_iswhite(*p))
;
else if (*p == 'i')
sort_ic = TRUE;
else if (*p == 'r')
sort_rx = TRUE;
else if (*p == 'n')
sort_nr = 2;
else if (*p == 'o')
sort_oct = 2;
else if (*p == 'x')
sort_hex = 2;
else if (*p == 'u')
unique = TRUE;
else if (*p == '"') /* comment start */
break;
else if (check_nextcmd(p) != NULL)
{
eap->nextcmd = check_nextcmd(p);
break;
}
else if (!ASCII_ISALPHA(*p) && regmatch.regprog == NULL)
{
s = skip_regexp(p + 1, *p, TRUE, NULL);
if (*s != *p)
{
EMSG(_(e_invalpat));
goto sortend;
}
*s = NUL;
regmatch.regprog = vim_regcomp(p + 1, RE_MAGIC);
if (regmatch.regprog == NULL)
goto sortend;
p = s; /* continue after the regexp */
regmatch.rm_ic = p_ic;
}
else
{
EMSG2(_(e_invarg2), p);
goto sortend;
}
}
/* Can only have one of 'n', 'o' and 'x'. */
if (sort_nr + sort_oct + sort_hex > 2)
{
EMSG(_(e_invarg));
goto sortend;
}
/* From here on "sort_nr" is used as a flag for any number sorting. */
sort_nr += sort_oct + sort_hex;
/*
* Make an array with all line numbers. This avoids having to copy all
* the lines into allocated memory.
* When sorting on strings "start_col_nr" is the offset in the line, for
* numbers sorting it's the number to sort on. This means the pattern
* matching and number conversion only has to be done once per line.
* Also get the longest line length for allocating "sortbuf".
*/
for (lnum = eap->line1; lnum <= eap->line2; ++lnum)
{
s = ml_get(lnum);
len = (int)STRLEN(s);
if (maxlen < len)
maxlen = len;
start_col = 0;
end_col = len;
if (regmatch.regprog != NULL && vim_regexec(®match, s, 0))
{
if (sort_rx)
{
start_col = (colnr_T)(regmatch.startp[0] - s);
end_col = (colnr_T)(regmatch.endp[0] - s);
}
else
start_col = (colnr_T)(regmatch.endp[0] - s);
}
else
if (regmatch.regprog != NULL)
end_col = 0;
if (sort_nr)
{
/* Make sure vim_str2nr doesn't read any digits past the end
* of the match, by temporarily terminating the string there */
s2 = s + end_col;
c = *s2;
(*s2) = 0;
/* Sorting on number: Store the number itself. */
if (sort_hex)
s = skiptohex(s + start_col);
else
s = skiptodigit(s + start_col);
vim_str2nr(s, NULL, NULL, sort_oct, sort_hex,
&nrs[lnum - eap->line1].start_col_nr, NULL);
(*s2) = c;
}
else
{
/* Store the column to sort at. */
nrs[lnum - eap->line1].start_col_nr = start_col;
nrs[lnum - eap->line1].end_col_nr = end_col;
}
nrs[lnum - eap->line1].lnum = lnum;
if (regmatch.regprog != NULL)
fast_breakcheck();
if (got_int)
goto sortend;
}
/* Allocate a buffer that can hold the longest line. */
sortbuf1 = alloc((unsigned)maxlen + 1);
if (sortbuf1 == NULL)
goto sortend;
sortbuf2 = alloc((unsigned)maxlen + 1);
if (sortbuf2 == NULL)
goto sortend;
/* Sort the array of line numbers. Note: can't be interrupted! */
qsort((void *)nrs, count, sizeof(sorti_T), sort_compare);
if (sort_abort)
goto sortend;
/* Insert the lines in the sorted order below the last one. */
lnum = eap->line2;
for (i = 0; i < count; ++i)
{
s = ml_get(nrs[eap->forceit ? count - i - 1 : i].lnum);
if (!unique || i == 0
|| (sort_ic ? STRICMP(s, sortbuf1) : STRCMP(s, sortbuf1)) != 0)
{
if (ml_append(lnum++, s, (colnr_T)0, FALSE) == FAIL)
break;
if (unique)
STRCPY(sortbuf1, s);
}
fast_breakcheck();
if (got_int)
goto sortend;
}
/* delete the original lines if appending worked */
if (i == count)
for (i = 0; i < count; ++i)
ml_delete(eap->line1, FALSE);
else
count = 0;
/* Adjust marks for deleted (or added) lines and prepare for displaying. */
deleted = (long)(count - (lnum - eap->line2));
if (deleted > 0)
mark_adjust(eap->line2 - deleted, eap->line2, (long)MAXLNUM, -deleted);
else if (deleted < 0)
mark_adjust(eap->line2, MAXLNUM, -deleted, 0L);
changed_lines(eap->line1, 0, eap->line2 + 1, -deleted);
curwin->w_cursor.lnum = eap->line1;
beginline(BL_WHITE | BL_FIX);
sortend:
vim_free(nrs);
vim_free(sortbuf1);
vim_free(sortbuf2);
vim_free(regmatch.regprog);
if (got_int)
EMSG(_(e_interr));
}
/*
* ":retab".
*/
void
ex_retab(eap)
exarg_T *eap;
{
linenr_T lnum;
int got_tab = FALSE;
long num_spaces = 0;
long num_tabs;
long len;
long col;
long vcol;
long start_col = 0; /* For start of white-space string */
long start_vcol = 0; /* For start of white-space string */
int temp;
long old_len;
char_u *ptr;
char_u *new_line = (char_u *)1; /* init to non-NULL */
int did_undo; /* called u_save for current line */
int new_ts;
int save_list;
linenr_T first_line = 0; /* first changed line */
linenr_T last_line = 0; /* last changed line */
save_list = curwin->w_p_list;
curwin->w_p_list = 0; /* don't want list mode here */
new_ts = getdigits(&(eap->arg));
if (new_ts < 0)
{
EMSG(_(e_positive));
return;
}
if (new_ts == 0)
new_ts = curbuf->b_p_ts;
for (lnum = eap->line1; !got_int && lnum <= eap->line2; ++lnum)
{
ptr = ml_get(lnum);
col = 0;
vcol = 0;
did_undo = FALSE;
for (;;)
{
if (vim_iswhite(ptr[col]))
{
if (!got_tab && num_spaces == 0)
{
/* First consecutive white-space */
start_vcol = vcol;
start_col = col;
}
if (ptr[col] == ' ')
num_spaces++;
else
got_tab = TRUE;
}
else
{
if (got_tab || (eap->forceit && num_spaces > 1))
{
/* Retabulate this string of white-space */
/* len is virtual length of white string */
len = num_spaces = vcol - start_vcol;
num_tabs = 0;
if (!curbuf->b_p_et)
{
temp = new_ts - (start_vcol % new_ts);
if (num_spaces >= temp)
{
num_spaces -= temp;
num_tabs++;
}
num_tabs += num_spaces / new_ts;
num_spaces -= (num_spaces / new_ts) * new_ts;
}
if (curbuf->b_p_et || got_tab ||
(num_spaces + num_tabs < len))
{
if (did_undo == FALSE)
{
did_undo = TRUE;
if (u_save((linenr_T)(lnum - 1),
(linenr_T)(lnum + 1)) == FAIL)
{
new_line = NULL; /* flag out-of-memory */
break;
}
}
/* len is actual number of white characters used */
len = num_spaces + num_tabs;
old_len = (long)STRLEN(ptr);
new_line = lalloc(old_len - col + start_col + len + 1,
TRUE);
if (new_line == NULL)
break;
if (start_col > 0)
mch_memmove(new_line, ptr, (size_t)start_col);
mch_memmove(new_line + start_col + len,
ptr + col, (size_t)(old_len - col + 1));
ptr = new_line + start_col;
for (col = 0; col < len; col++)
ptr[col] = (col < num_tabs) ? '\t' : ' ';
ml_replace(lnum, new_line, FALSE);
if (first_line == 0)
first_line = lnum;
last_line = lnum;
ptr = new_line;
col = start_col + len;
}
}
got_tab = FALSE;
num_spaces = 0;
}
if (ptr[col] == NUL)
break;
vcol += chartabsize(ptr + col, (colnr_T)vcol);
#ifdef FEAT_MBYTE
if (has_mbyte)
col += (*mb_ptr2len)(ptr + col);
else
#endif
++col;
}
if (new_line == NULL) /* out of memory */
break;
line_breakcheck();
}
if (got_int)
EMSG(_(e_interr));
if (curbuf->b_p_ts != new_ts)
redraw_curbuf_later(NOT_VALID);
if (first_line != 0)
changed_lines(first_line, 0, last_line + 1, 0L);
curwin->w_p_list = save_list; /* restore 'list' */
curbuf->b_p_ts = new_ts;
coladvance(curwin->w_curswant);
u_clearline();
}
#endif
/*
* :move command - move lines line1-line2 to line dest
*
* return FAIL for failure, OK otherwise
*/
int
do_move(line1, line2, dest)
linenr_T line1;
linenr_T line2;
linenr_T dest;
{
char_u *str;
linenr_T l;
linenr_T extra; /* Num lines added before line1 */
linenr_T num_lines; /* Num lines moved */
linenr_T last_line; /* Last line in file after adding new text */
if (dest >= line1 && dest < line2)
{
EMSG(_("E134: Move lines into themselves"));
return FAIL;
}
num_lines = line2 - line1 + 1;
/*
* First we copy the old text to its new location -- webb
* Also copy the flag that ":global" command uses.
*/
if (u_save(dest, dest + 1) == FAIL)
return FAIL;
for (extra = 0, l = line1; l <= line2; l++)
{
str = vim_strsave(ml_get(l + extra));
if (str != NULL)
{
ml_append(dest + l - line1, str, (colnr_T)0, FALSE);
vim_free(str);
if (dest < line1)
extra++;
}
}
/*
* Now we must be careful adjusting our marks so that we don't overlap our
* mark_adjust() calls.
*
* We adjust the marks within the old text so that they refer to the
* last lines of the file (temporarily), because we know no other marks
* will be set there since these line numbers did not exist until we added
* our new lines.
*
* Then we adjust the marks on lines between the old and new text positions
* (either forwards or backwards).
*
* And Finally we adjust the marks we put at the end of the file back to
* their final destination at the new text position -- webb
*/
last_line = curbuf->b_ml.ml_line_count;
mark_adjust(line1, line2, last_line - line2, 0L);
if (dest >= line2)
{
mark_adjust(line2 + 1, dest, -num_lines, 0L);
curbuf->b_op_start.lnum = dest - num_lines + 1;
curbuf->b_op_end.lnum = dest;
}
else
{
mark_adjust(dest + 1, line1 - 1, num_lines, 0L);
curbuf->b_op_start.lnum = dest + 1;
curbuf->b_op_end.lnum = dest + num_lines;
}
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
mark_adjust(last_line - num_lines + 1, last_line,
-(last_line - dest - extra), 0L);
/*
* Now we delete the original text -- webb
*/
if (u_save(line1 + extra - 1, line2 + extra + 1) == FAIL)
return FAIL;
for (l = line1; l <= line2; l++)
ml_delete(line1 + extra, TRUE);
if (!global_busy && num_lines > p_report)
{
if (num_lines == 1)
MSG(_("1 line moved"));
else
smsg((char_u *)_("%ld lines moved"), num_lines);
}
/*
* Leave the cursor on the last of the moved lines.
*/
if (dest >= line1)
curwin->w_cursor.lnum = dest;
else
curwin->w_cursor.lnum = dest + (line2 - line1) + 1;
if (line1 < dest)
changed_lines(line1, 0, dest + num_lines + 1, 0L);
else
changed_lines(dest + 1, 0, line1 + num_lines, 0L);
return OK;
}
/*
* ":copy"
*/
void
ex_copy(line1, line2, n)
linenr_T line1;
linenr_T line2;
linenr_T n;
{
linenr_T count;
char_u *p;
count = line2 - line1 + 1;
curbuf->b_op_start.lnum = n + 1;
curbuf->b_op_end.lnum = n + count;
curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
/*
* there are three situations:
* 1. destination is above line1
* 2. destination is between line1 and line2
* 3. destination is below line2
*
* n = destination (when starting)
* curwin->w_cursor.lnum = destination (while copying)
* line1 = start of source (while copying)
* line2 = end of source (while copying)
*/
if (u_save(n, n + 1) == FAIL)
return;
curwin->w_cursor.lnum = n;
while (line1 <= line2)
{
/* need to use vim_strsave() because the line will be unlocked within
* ml_append() */
p = vim_strsave(ml_get(line1));
if (p != NULL)
{
ml_append(curwin->w_cursor.lnum, p, (colnr_T)0, FALSE);
vim_free(p);
}
/* situation 2: skip already copied lines */
if (line1 == n)
line1 = curwin->w_cursor.lnum;
++line1;
if (curwin->w_cursor.lnum < line1)
++line1;
if (curwin->w_cursor.lnum < line2)
++line2;
++curwin->w_cursor.lnum;
}
appended_lines_mark(n, count);
msgmore((long)count);
}
static char_u *prevcmd = NULL; /* the previous command */
#if defined(EXITFREE) || defined(PROTO)
void
free_prev_shellcmd()
{
vim_free(prevcmd);
}
#endif
/*
* Handle the ":!cmd" command. Also for ":r !cmd" and ":w !cmd"
* Bangs in the argument are replaced with the previously entered command.
* Remember the argument.
*
* RISCOS: Bangs only replaced when followed by a space, since many
* pathnames contain one.
*/
void
do_bang(addr_count, eap, forceit, do_in, do_out)
int addr_count;
exarg_T *eap;
int forceit;
int do_in, do_out;
{
char_u *arg = eap->arg; /* command */
linenr_T line1 = eap->line1; /* start of range */
linenr_T line2 = eap->line2; /* end of range */
char_u *newcmd = NULL; /* the new command */
int free_newcmd = FALSE; /* need to free() newcmd */
int ins_prevcmd;
char_u *t;
char_u *p;
char_u *trailarg;
int len;
int scroll_save = msg_scroll;
/*
* Disallow shell commands for "rvim".
* Disallow shell commands from .exrc and .vimrc in current directory for
* security reasons.
*/
if (check_restricted() || check_secure())
return;
if (addr_count == 0) /* :! */
{
msg_scroll = FALSE; /* don't scroll here */
autowrite_all();
msg_scroll = scroll_save;
}
/*
* Try to find an embedded bang, like in :!<cmd> ! [args]
* (:!! is indicated by the 'forceit' variable)
*/
ins_prevcmd = forceit;
trailarg = arg;
do
{
len = (int)STRLEN(trailarg) + 1;
if (newcmd != NULL)
len += (int)STRLEN(newcmd);
if (ins_prevcmd)
{
if (prevcmd == NULL)
{
EMSG(_(e_noprev));
vim_free(newcmd);
return;
}
len += (int)STRLEN(prevcmd);
}
if ((t = alloc(len)) == NULL)
{
vim_free(newcmd);
return;
}
*t = NUL;
if (newcmd != NULL)
STRCAT(t, newcmd);
if (ins_prevcmd)
STRCAT(t, prevcmd);
p = t + STRLEN(t);
STRCAT(t, trailarg);
vim_free(newcmd);
newcmd = t;
/*
* Scan the rest of the argument for '!', which is replaced by the
* previous command. "\!" is replaced by "!" (this is vi compatible).
*/
trailarg = NULL;
while (*p)
{
if (*p == '!'
#ifdef RISCOS
&& (p[1] == ' ' || p[1] == NUL)
#endif
)
{
if (p > newcmd && p[-1] == '\\')
mch_memmove(p - 1, p, (size_t)(STRLEN(p) + 1));
else
{
trailarg = p;
*trailarg++ = NUL;
ins_prevcmd = TRUE;
break;
}
}
++p;
}
} while (trailarg != NULL);
vim_free(prevcmd);
prevcmd = newcmd;
if (bangredo) /* put cmd in redo buffer for ! command */
{
AppendToRedobuffLit(prevcmd, -1);
AppendToRedobuff((char_u *)"\n");
bangredo = FALSE;
}
/*
* Add quotes around the command, for shells that need them.
*/
if (*p_shq != NUL)
{
newcmd = alloc((unsigned)(STRLEN(prevcmd) + 2 * STRLEN(p_shq) + 1));
if (newcmd == NULL)