Differential D21196 Diff 60606 lib/libedit/filecomplete.c

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lib/libedit/filecomplete.c

/* $NetBSD: filecomplete.c,v 1.40 2016/02/17 19:47:49 christos Exp $ */		/* $NetBSD: filecomplete.c,v 1.57 2019/07/28 09:27:29 christos Exp $ */

/*-		/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.		* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.		* All rights reserved.
*		*
* This code is derived from software contributed to The NetBSD Foundation		* This code is derived from software contributed to The NetBSD Foundation
* by Jaromir Dolecek.		* by Jaromir Dolecek.
*		*
Show All 16 Lines
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN		* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)		* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE		* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.		* POSSIBILITY OF SUCH DAMAGE.
*/		*/

#include "config.h"		#include "config.h"
#if !defined(lint) && !defined(SCCSID)		#if !defined(lint) && !defined(SCCSID)
__RCSID("$NetBSD: filecomplete.c,v 1.40 2016/02/17 19:47:49 christos Exp $");		__RCSID("$NetBSD: filecomplete.c,v 1.57 2019/07/28 09:27:29 christos Exp $");
#endif /* not lint && not SCCSID */		#endif /* not lint && not SCCSID */
#include <sys/cdefs.h>		#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");		__FBSDID("$FreeBSD$");

#include <sys/types.h>		#include <sys/types.h>
#include <sys/stat.h>		#include <sys/stat.h>
#include <dirent.h>		#include <dirent.h>
#include <errno.h>		#include <errno.h>
#include <fcntl.h>		#include <fcntl.h>
#include <limits.h>		#include <limits.h>
#include <pwd.h>		#include <pwd.h>
#include <stdio.h>		#include <stdio.h>
#include <stdlib.h>		#include <stdlib.h>
#include <string.h>		#include <string.h>
#include <unistd.h>		#include <unistd.h>

#include "el.h"		#include "el.h"
#include "filecomplete.h"		#include "filecomplete.h"

static const Char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@',		static const wchar_t break_chars[] = L" \t\n\"\\'`@$><=;\|&{(";
'$', '>', '<', '=', ';', '\|', '&', '{', '(', '\0' };
/* Tilde is deliberately omitted here, we treat it specially. */
static const Char extra_quote_chars[] = { ')', '}', '*', '?', '[', '$', '\0' };


/********************************/		/********************************/
/* completion functions */		/* completion functions */

/*		/*
* does tilde expansion of strings of type ``~user/foo''		* does tilde expansion of strings of type ``~user/foo''
* if ``user'' isn't valid user name or ``txt'' doesn't start		* if ``user'' isn't valid user name or ``txt'' doesn't start
* w/ '~', returns pointer to strdup()ed copy of ``txt''		* w/ '~', returns pointer to strdup()ed copy of ``txt''
*		*
Show All 16 Lines	#endif
temp = strchr(txt + 1, '/');		temp = strchr(txt + 1, '/');
if (temp == NULL) {		if (temp == NULL) {
temp = strdup(txt + 1);		temp = strdup(txt + 1);
if (temp == NULL)		if (temp == NULL)
return NULL;		return NULL;
} else {		} else {
/* text until string after slash */		/* text until string after slash */
len = (size_t)(temp - txt + 1);		len = (size_t)(temp - txt + 1);
temp = el_malloc(len * sizeof(*temp));		temp = el_calloc(len, sizeof(*temp));
if (temp == NULL)		if (temp == NULL)
return NULL;		return NULL;
(void)strncpy(temp, txt + 1, len - 2);		(void)strncpy(temp, txt + 1, len - 2);
temp[len - 2] = '\0';		temp[len - 2] = '\0';
}		}
if (temp[0] == 0) {		if (temp[0] == 0) {
#ifdef HAVE_GETPW_R_POSIX		#ifdef HAVE_GETPW_R_POSIX
if (getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf),		if (getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf),
Show All 18 Lines	#endif
if (pass == NULL)		if (pass == NULL)
return strdup(txt);		return strdup(txt);

/* update pointer txt to point at string immedially following */		/* update pointer txt to point at string immedially following */
/* first slash */		/* first slash */
txt += len;		txt += len;

len = strlen(pass->pw_dir) + 1 + strlen(txt) + 1;		len = strlen(pass->pw_dir) + 1 + strlen(txt) + 1;
temp = el_malloc(len * sizeof(*temp));		temp = el_calloc(len, sizeof(*temp));
if (temp == NULL)		if (temp == NULL)
return NULL;		return NULL;
(void)snprintf(temp, len, "%s/%s", pass->pw_dir, txt);		(void)snprintf(temp, len, "%s/%s", pass->pw_dir, txt);

return temp;		return temp;
}		}

		static int
		needs_escaping(char c)
		{
		switch (c) {
		case '\'':
		case '"':
		case '(':
		case ')':
		case '\\':
		case '<':
		case '>':
		case '$':
		case '#':
		case ' ':
		case '\n':
		case '\t':
		case '?':
		case ';':
		case '`':
		case '@':
		case '=':
		case '\|':
		case '{':
		case '}':
		case '&':
		case '*':
		case '[':
		return 1;
		default:
		return 0;
		}
		}

		static int
		needs_dquote_escaping(char c)
		{
		switch (c) {
		case '"':
		case '\\':
		case '`':
		case '$':
		return 1;
		default:
		return 0;
		}
		}


		static wchar_t *
		unescape_string(const wchar_t *string, size_t length)
		{
		size_t i;
		size_t j = 0;
		wchar_t unescaped = el_calloc(length + 1, sizeof(string));
		if (unescaped == NULL)
		return NULL;
		for (i = 0; i < length ; i++) {
		if (string[i] == '\\')
		continue;
		unescaped[j++] = string[i];
		}
		unescaped[j] = 0;
		return unescaped;
		}

		static char *
		escape_filename(EditLine * el, const char *filename)
		{
		size_t original_len = 0;
		size_t escaped_character_count = 0;
		size_t offset = 0;
		size_t newlen;
		const char *s;
		char c;
		size_t s_quoted = 0; /* does the input contain a single quote */
		size_t d_quoted = 0; /* does the input contain a double quote */
		char *escaped_str;
		wchar_t *temp = el->el_line.buffer;

		if (filename == NULL)
		return NULL;

		while (temp != el->el_line.cursor) {
/*		/*
		* If we see a single quote but have not seen a double quote
		* so far set/unset s_quote
		*/
		if (temp[0] == '\'' && !d_quoted)
		s_quoted = !s_quoted;
		/*
		* vice versa to the above condition
		*/
		else if (temp[0] == '"' && !s_quoted)
		d_quoted = !d_quoted;
		temp++;
		}

		/* Count number of special characters so that we can calculate
		* number of extra bytes needed in the new string
		*/
		for (s = filename; *s; s++, original_len++) {
		c = *s;
		/* Inside a single quote only single quotes need escaping */
		if (s_quoted && c == '\'') {
		escaped_character_count += 3;
		continue;
		}
		/* Inside double quotes only ", \, ` and $ need escaping */
		if (d_quoted && needs_dquote_escaping(c)) {
		escaped_character_count++;
		continue;
		}
		if (!s_quoted && !d_quoted && needs_escaping(c))
		escaped_character_count++;
		}

		newlen = original_len + escaped_character_count + 1;
		if (s_quoted \|\| d_quoted)
		newlen++;

		if ((escaped_str = el_malloc(newlen)) == NULL)
		return NULL;

		for (s = filename; *s; s++) {
		c = *s;
		if (!needs_escaping(c)) {
		/* no escaping is required continue as usual */
		escaped_str[offset++] = c;
		continue;
		}

		/* single quotes inside single quotes require special handling */
		if (c == '\'' && s_quoted) {
		escaped_str[offset++] = '\'';
		escaped_str[offset++] = '\\';
		escaped_str[offset++] = '\'';
		escaped_str[offset++] = '\'';
		continue;
		}

		/* Otherwise no escaping needed inside single quotes */
		if (s_quoted) {
		escaped_str[offset++] = c;
		continue;
		}

		/* No escaping needed inside a double quoted string either
		* unless we see a '$', '\', '`', or '"' (itself)
		*/
		if (d_quoted && !needs_dquote_escaping(c)) {
		escaped_str[offset++] = c;
		continue;
		}

		/* If we reach here that means escaping is actually needed */
		escaped_str[offset++] = '\\';
		escaped_str[offset++] = c;
		}

		/* close the quotes */
		if (s_quoted)
		escaped_str[offset++] = '\'';
		else if (d_quoted)
		escaped_str[offset++] = '"';

		escaped_str[offset] = 0;
		return escaped_str;
		}

		/*
* return first found file name starting by the ``text'' or NULL if no		* return first found file name starting by the ``text'' or NULL if no
* such file can be found		* such file can be found
* value of ``state'' is ignored		* value of ``state'' is ignored
*		*
* it's the caller's responsibility to free the returned string		* it's the caller's responsibility to free the returned string
*/		*/
char *		char *
fn_filename_completion_function(const char *text, int state)		fn_filename_completion_function(const char *text, int state)
▲ Show 20 Lines • Show All 98 Lines • ▼ Show 20 Lines

#if HAVE_STRUCT_DIRENT_D_NAMLEN		#if HAVE_STRUCT_DIRENT_D_NAMLEN
len = entry->d_namlen;		len = entry->d_namlen;
#else		#else
len = strlen(entry->d_name);		len = strlen(entry->d_name);
#endif		#endif

len = strlen(dirname) + len + 1;		len = strlen(dirname) + len + 1;
temp = el_malloc(len * sizeof(*temp));		temp = el_calloc(len, sizeof(*temp));
if (temp == NULL)		if (temp == NULL)
return NULL;		return NULL;
(void)snprintf(temp, len, "%s%s", dirname, entry->d_name);		(void)snprintf(temp, len, "%s%s", dirname, entry->d_name);
} else {		} else {
(void)closedir(dir);		(void)closedir(dir);
dir = NULL;		dir = NULL;
temp = NULL;		temp = NULL;
}		}
▲ Show 20 Lines • Show All 59 Lines • ▼ Show 20 Lines	completion_matches(const char text, char (genfunc)(const char , int))
max_equal = strlen(prevstr);		max_equal = strlen(prevstr);
for (; which <= matches; which++) {		for (; which <= matches; which++) {
for (i = 0; i < max_equal &&		for (i = 0; i < max_equal &&
prevstr[i] == match_list[which][i]; i++)		prevstr[i] == match_list[which][i]; i++)
continue;		continue;
max_equal = i;		max_equal = i;
}		}

retstr = el_malloc((max_equal + 1) * sizeof(*retstr));		retstr = el_calloc(max_equal + 1, sizeof(*retstr));
if (retstr == NULL) {		if (retstr == NULL) {
el_free(match_list);		el_free(match_list);
return NULL;		return NULL;
}		}
(void)strncpy(retstr, match_list[1], max_equal);		(void)strncpy(retstr, match_list[1], max_equal);
retstr[max_equal] = '\0';		retstr[max_equal] = '\0';
match_list[0] = retstr;		match_list[0] = retstr;

Show All 19 Lines
* Display list of strings in columnar format on readline's output stream.		* Display list of strings in columnar format on readline's output stream.
* 'matches' is list of strings, 'num' is number of strings in 'matches',		* 'matches' is list of strings, 'num' is number of strings in 'matches',
* 'width' is maximum length of string in 'matches'.		* 'width' is maximum length of string in 'matches'.
*		*
* matches[0] is not one of the match strings, but it is counted in		* matches[0] is not one of the match strings, but it is counted in
* num, so the strings are matches[1] through matches[num-1].		* num, so the strings are matches[1] through matches[num-1].
*/		*/
void		void
fn_display_match_list (EditLine el, char *matches, size_t num, size_t width)		fn_display_match_list(EditLine * el, char **matches, size_t num, size_t width,
		const char (app_func) (const char *))
{		{
size_t line, lines, col, cols, thisguy;		size_t line, lines, col, cols, thisguy;
int screenwidth = el->el_terminal.t_size.h;		int screenwidth = el->el_terminal.t_size.h;
		if (app_func == NULL)
		app_func = append_char_function;

/* Ignore matches[0]. Avoid 1-based array logic below. */		/* Ignore matches[0]. Avoid 1-based array logic below. */
matches++;		matches++;
num--;		num--;

/*		/*
* Find out how many entries can be put on one line; count		* Find out how many entries can be put on one line; count
* with one space between strings the same way it's printed.		* with one space between strings the same way it's printed.
*/		*/
cols = (size_t)screenwidth / (width + 1);		cols = (size_t)screenwidth / (width + 2);
if (cols == 0)		if (cols == 0)
cols = 1;		cols = 1;

/* how many lines of output, rounded up */		/* how many lines of output, rounded up */
lines = (num + cols - 1) / cols;		lines = (num + cols - 1) / cols;

/* Sort the items. */		/* Sort the items. */
qsort(matches, num, sizeof(char *), _fn_qsort_string_compare);		qsort(matches, num, sizeof(char *), _fn_qsort_string_compare);

/*		/*
* On the ith line print elements i, i+lines, i+lines*2, etc.		* On the ith line print elements i, i+lines, i+lines*2, etc.
*/		*/
for (line = 0; line < lines; line++) {		for (line = 0; line < lines; line++) {
for (col = 0; col < cols; col++) {		for (col = 0; col < cols; col++) {
thisguy = line + col * lines;		thisguy = line + col * lines;
if (thisguy >= num)		if (thisguy >= num)
break;		break;
(void)fprintf(el->el_outfile, "%s%-*s",		(void)fprintf(el->el_outfile, "%s%s%s",
col == 0 ? "" : " ", (int)width, matches[thisguy]);		col == 0 ? "" : " ", matches[thisguy],
		(*app_func)(matches[thisguy]));
		(void)fprintf(el->el_outfile, "%-*s",
		(int) (width - strlen(matches[thisguy])), "");
}		}
(void)fprintf(el->el_outfile, "\n");		(void)fprintf(el->el_outfile, "\n");
}		}
}		}

		static wchar_t *
		find_word_to_complete(const wchar_t * cursor, const wchar_t * buffer,
		const wchar_t * word_break, const wchar_t * special_prefixes, size_t * length)
		{
		/* We now look backwards for the start of a filename/variable word */
		const wchar_t *ctemp = cursor;
		size_t len;

		/* if the cursor is placed at a slash or a quote, we need to find the
		* word before it
		*/
		if (ctemp > buffer) {
		switch (ctemp[-1]) {
		case '\\':
		case '\'':
		case '"':
		ctemp--;
		break;
		default:
		break;
		}
		}

		for (;;) {
		if (ctemp <= buffer)
		break;
		if (wcschr(word_break, ctemp[-1])) {
		if (ctemp - buffer >= 2 && ctemp[-2] == '\\') {
		ctemp -= 2;
		continue;
		} else
		break;
		}
		if (special_prefixes && wcschr(special_prefixes, ctemp[-1]))
		break;
		ctemp--;
		}

		len = (size_t) (cursor - ctemp);
		*length = len;
		wchar_t *unescaped_word = unescape_string(ctemp, len);
		if (unescaped_word == NULL)
		return NULL;
		return unescaped_word;
		}

/*		/*
* Complete the word at or before point,		* Complete the word at or before point,
* 'what_to_do' says what to do with the completion.		* 'what_to_do' says what to do with the completion.
* \t means do standard completion.		* \t means do standard completion.
* `?' means list the possible completions.		* `?' means list the possible completions.
* `*' means insert all of the possible completions.		* `*' means insert all of the possible completions.
* `!' means to do standard completion, and list all possible completions if		* `!' means to do standard completion, and list all possible completions if
* there is more than one.		* there is more than one.
*		*
* Note: '*' support is not implemented		* Note: '*' support is not implemented
* '!' could never be invoked		* '!' could never be invoked
*/		*/
int		int
fn_complete(EditLine *el,		fn_complete(EditLine *el,
char (complet_func)(const char *, int),		char (complet_func)(const char *, int),
char *(attempted_completion_function)(const char *, int, int),		char *(attempted_completion_function)(const char *, int, int),
const Char word_break, const Char special_prefixes,		const wchar_t word_break, const wchar_t special_prefixes,
const char (app_func)(const char *), size_t query_items,		const char (app_func)(const char *), size_t query_items,
int completion_type, int over, int point, int end,		int completion_type, int over, int point, int end)
const Char (find_word_start_func)(const Char , const Char ),
Char (dequoting_func)(const Char *),
char (quoting_func)(const char *))
{		{
const TYPE(LineInfo) *li;		const LineInfoW *li;
Char *temp;		wchar_t *temp;
Char *dequoted_temp;
char **matches;		char **matches;
const Char *ctemp;		char *completion;
size_t len;		size_t len;
int what_to_do = '\t';		int what_to_do = '\t';
int retval = CC_NORM;		int retval = CC_NORM;

if (el->el_state.lastcmd == el->el_state.thiscmd)		if (el->el_state.lastcmd == el->el_state.thiscmd)
what_to_do = '?';		what_to_do = '?';

/* readline's rl_complete() has to be told what we did... */		/* readline's rl_complete() has to be told what we did... */
if (completion_type != NULL)		if (completion_type != NULL)
*completion_type = what_to_do;		*completion_type = what_to_do;

if (!complet_func)		if (!complet_func)
complet_func = fn_filename_completion_function;		complet_func = fn_filename_completion_function;
if (!app_func)		if (!app_func)
app_func = append_char_function;		app_func = append_char_function;

/* We now look backwards for the start of a filename/variable word */		li = el_wline(el);
li = FUN(el,line)(el);		temp = find_word_to_complete(li->cursor,
if (find_word_start_func)		li->buffer, word_break, special_prefixes, &len);
ctemp = find_word_start_func(li->buffer, li->cursor);		if (temp == NULL)
else {		goto out;
ctemp = li->cursor;
while (ctemp > li->buffer
&& !Strchr(word_break, ctemp[-1])
&& (!special_prefixes \|\| !Strchr(special_prefixes, ctemp[-1]) ) )
ctemp--;
}

len = (size_t)(li->cursor - ctemp);
temp = el_malloc((len + 1) * sizeof(*temp));
(void)Strncpy(temp, ctemp, len);
temp[len] = '\0';

if (dequoting_func) {
dequoted_temp = dequoting_func(temp);
if (dequoted_temp == NULL)
return retval;
} else
dequoted_temp = NULL;

/* these can be used by function called in completion_matches() */		/* these can be used by function called in completion_matches() */
/* or (attempted_completion_function)() /		/* or (attempted_completion_function)() /
if (point != NULL)		if (point != NULL)
*point = (int)(li->cursor - li->buffer);		*point = (int)(li->cursor - li->buffer);
if (end != NULL)		if (end != NULL)
*end = (int)(li->lastchar - li->buffer);		*end = (int)(li->lastchar - li->buffer);

if (attempted_completion_function) {		if (attempted_completion_function) {
int cur_off = (int)(li->cursor - li->buffer);		int cur_off = (int)(li->cursor - li->buffer);
matches = (*attempted_completion_function)(		matches = (*attempted_completion_function)(
ct_encode_string(dequoted_temp ? dequoted_temp : temp,		ct_encode_string(temp, &el->el_scratch),
&el->el_scratch),
cur_off - (int)len, cur_off);		cur_off - (int)len, cur_off);
} else		} else
matches = NULL;		matches = NULL;
if (!attempted_completion_function \|\|		if (!attempted_completion_function \|\|
(over != NULL && !*over && !matches))		(over != NULL && !*over && !matches))
matches = completion_matches(		matches = completion_matches(
ct_encode_string(dequoted_temp ? dequoted_temp : temp,		ct_encode_string(temp, &el->el_scratch), complet_func);
&el->el_scratch), complet_func);

if (over != NULL)		if (over != NULL)
*over = 0;		*over = 0;

if (matches) {		if (matches) {
int i;		int i;
size_t matches_num, maxlen, match_len, match_display=1;		size_t matches_num, maxlen, match_len, match_display=1;
		int single_match = matches[2] == NULL &&
		(matches[1] == NULL \|\| strcmp(matches[0], matches[1]) == 0);

retval = CC_REFRESH;		retval = CC_REFRESH;
/*
* Only replace the completed string with common part of
* possible matches if there is possible completion.
*/
if (matches[0][0] != '\0') {		if (matches[0][0] != '\0') {
char *quoted_match;
if (quoting_func) {
quoted_match = quoting_func(matches[0]);
if (quoted_match == NULL)
goto free_matches;
} else
quoted_match = NULL;
el_deletestr(el, (int) len);		el_deletestr(el, (int) len);
FUN(el,insertstr)(el,		if (!attempted_completion_function)
ct_decode_string(quoted_match ? quoted_match :		completion = escape_filename(el, matches[0]);
matches[0] , &el->el_scratch));		else
}		completion = strdup(matches[0]);
		if (completion == NULL)
if (what_to_do == '?')		goto out;
goto display_matches;		if (single_match) {

if (matches[2] == NULL &&
(matches[1] == NULL \|\| strcmp(matches[0], matches[1]) == 0)) {
/*		/*
* We found exact match. Add a space after		* We found exact match. Add a space after
* it, unless we do filename completion and the		* it, unless we do filename completion and the
* object is a directory.		* object is a directory. Also do necessary escape quoting
*/		*/
FUN(el,insertstr)(el,		el_winsertstr(el,
ct_decode_string((*app_func)(matches[0]),		ct_decode_string(completion, &el->el_scratch));
		el_winsertstr(el,
		ct_decode_string((*app_func)(completion),
&el->el_scratch));		&el->el_scratch));
} else if (what_to_do == '!') {		} else {
display_matches:
/*		/*
		* Only replace the completed string with common part of
		* possible matches if there is possible completion.
		*/
		el_winsertstr(el,
		ct_decode_string(completion, &el->el_scratch));
		}
		free(completion);
		}


		if (!single_match && (what_to_do == '!' \|\| what_to_do == '?')) {
		/*
* More than one match and requested to list possible		* More than one match and requested to list possible
* matches.		* matches.
*/		*/

for(i = 1, maxlen = 0; matches[i]; i++) {		for(i = 1, maxlen = 0; matches[i]; i++) {
match_len = strlen(matches[i]);		match_len = strlen(matches[i]);
if (match_len > maxlen)		if (match_len > maxlen)
maxlen = match_len;		maxlen = match_len;
Show All 22 Lines	if (!single_match && (what_to_do == '!' \|\| what_to_do == '?')) {
/*		/*
* Interface of this function requires the		* Interface of this function requires the
* strings be matches[1..num-1] for compat.		* strings be matches[1..num-1] for compat.
* We have matches_num strings not counting		* We have matches_num strings not counting
* the prefix in matches[0], so we need to		* the prefix in matches[0], so we need to
* add 1 to matches_num for the call.		* add 1 to matches_num for the call.
*/		*/
fn_display_match_list(el, matches,		fn_display_match_list(el, matches,
matches_num+1, maxlen);		matches_num+1, maxlen, app_func);
}		}
retval = CC_REDISPLAY;		retval = CC_REDISPLAY;
} else if (matches[0][0]) {		} else if (matches[0][0]) {
/*		/*
* There was some common match, but the name was		* There was some common match, but the name was
* not complete enough. Next tab will print possible		* not complete enough. Next tab will print possible
* completions.		* completions.
*/		*/
el_beep(el);		el_beep(el);
} else {		} else {
/* lcd is not a valid object - further specification */		/* lcd is not a valid object - further specification */
/* is needed */		/* is needed */
el_beep(el);		el_beep(el);
retval = CC_NORM;		retval = CC_NORM;
}		}

free_matches:
/* free elements of array and the array itself */		/* free elements of array and the array itself */
for (i = 0; matches[i]; i++)		for (i = 0; matches[i]; i++)
el_free(matches[i]);		el_free(matches[i]);
el_free(matches);		el_free(matches);
matches = NULL;		matches = NULL;
}		}
free(dequoted_temp);
		out:
el_free(temp);		el_free(temp);
return retval;		return retval;
}		}

/*		/*
* el-compatible wrapper around rl_complete; needed for key binding		* el-compatible wrapper around rl_complete; needed for key binding
*/		*/
/* ARGSUSED */		/* ARGSUSED */
unsigned char		unsigned char
_el_fn_complete(EditLine *el, int ch __attribute__((__unused__)))		_el_fn_complete(EditLine *el, int ch __attribute__((__unused__)))
{		{
return (unsigned char)fn_complete(el, NULL, NULL,		return (unsigned char)fn_complete(el, NULL, NULL,
break_chars, NULL, NULL, (size_t)100,		break_chars, NULL, NULL, (size_t)100,
NULL, NULL, NULL, NULL,		NULL, NULL, NULL, NULL);
NULL, NULL, NULL);
}

static const Char *
sh_find_word_start(const Char buffer, const Char cursor)
{
const Char *word_start = buffer;

while (buffer < cursor) {
if (*buffer == '\\')
buffer++;
else if (Strchr(break_chars, *buffer))
word_start = buffer + 1;
buffer++;
}
return word_start;
}

static char *
sh_quote(const char *str)
{
const char *src;
int extra_len = 0;
char quoted_str, dst;

for (src = str; *src != '\0'; src++)
if (Strchr(break_chars, *src) \|\|
Strchr(extra_quote_chars, *src))
extra_len++;

quoted_str = malloc(sizeof(quoted_str)
(strlen(str) + extra_len + 1));
if (quoted_str == NULL)
return NULL;

dst = quoted_str;
for (src = str; *src != '\0'; src++) {
if (Strchr(break_chars, *src) \|\|
Strchr(extra_quote_chars, *src))
*dst++ = '\\';
dst++ = src;
}
*dst = '\0';

return quoted_str;
}

static Char *
sh_dequote(const Char *str)
{
Char dequoted_str, dst;

/* save extra space to replace \~ with ./~ */
dequoted_str = malloc(sizeof(dequoted_str) (Strlen(str) + 1 + 1));
if (dequoted_str == NULL)
return NULL;

dst = dequoted_str;

/* dequote \~ at start as ./~ */
if (*str == '\\' && str[1] == '~') {
str++;
*dst++ = '.';
*dst++ = '/';
}

while (*str) {
if (*str == '\\')
str++;
if (*str)
dst++ = str++;
}
*dst = '\0';

return dequoted_str;
}

/*
* completion function using sh quoting rules; for key binding
*/
/* ARGSUSED */
unsigned char
_el_fn_sh_complete(EditLine *el, int ch __attribute__((__unused__)))
{
return (unsigned char)fn_complete(el, NULL, NULL,
break_chars, NULL, NULL, 100,
NULL, NULL, NULL, NULL,
sh_find_word_start, sh_dequote, sh_quote);
}		}