 @@ -1,576 +1,576 @@
-/*	$NetBSD: histedit.c,v 1.48.8.2 2018/08/25 14:45:37 martin Exp $	*/
+/*	$NetBSD: histedit.c,v 1.48.8.3 2022/02/24 10:07:46 martin Exp $	*/
 /*-
  * Copyright (c) 1993
  *	The Regents of the University of California.  All rights reserved.
+ *
  * This code is derived from software contributed to Berkeley by
  * Kenneth Almquist.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 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 POSSIBILITY OF
  * SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)histedit.c	8.2 (Berkeley) 5/4/95";
 #else
-__RCSID("$NetBSD: histedit.c,v 1.48.8.2 2018/08/25 14:45:37 martin Exp $");
+__RCSID("$NetBSD: histedit.c,v 1.48.8.3 2022/02/24 10:07:46 martin Exp $");
 #endif
 #endif /* not lint */
 #include <sys/param.h>
 #include <paths.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 /*
  * Editline and history functions (and glue).
  */
 #include "shell.h"
 #include "parser.h"
 #include "var.h"
 #include "options.h"
 #include "builtins.h"
 #include "main.h"
 #include "output.h"
 #include "mystring.h"
 #include "myhistedit.h"
 #include "error.h"
 #include "alias.h"
 #ifndef SMALL
 #include "eval.h"
 #include "memalloc.h"
 #define MAXHISTLOOPS	4	/* max recursions through fc */
 #define DEFEDITOR	"ed"	/* default editor *should* be $EDITOR */
 History *hist;	/* history cookie */
 EditLine *el;	/* editline cookie */
 int displayhist;
 static FILE *el_in, *el_out;
 unsigned char _el_fn_complete(EditLine *, int);
 STATIC const char *fc_replace(const char *, char *, char *);
 #ifdef DEBUG
 extern FILE *tracefile;
 #endif
 /*
  * Set history and editing status.  Called whenever the status may
  * have changed (figures out what to do).
  */
 void
 histedit(void)
+{
 	FILE *el_err;
 #define editing (Eflag || Vflag)
 	if (iflag == 1) {
 		if (!hist) {
 			/*
 			 * turn history on
 			 */
 			INTOFF;
 			hist = history_init();
 			INTON;
 			if (hist != NULL)
 				sethistsize(histsizeval());
 			else
 				out2str("sh: can't initialize history\n");
+		}
 		if (editing && !el && isatty(0)) { /* && isatty(2) ??? */
 			/*
 			 * turn editing on
 			 */
 			char *term, *shname;
 			INTOFF;
 			if (el_in == NULL)
 				el_in = fdopen(0, "r");
 			if (el_out == NULL)
 				el_out = fdopen(2, "w");
 			if (el_in == NULL || el_out == NULL)
 				goto bad;
 			el_err = el_out;
 #if DEBUG
 			if (tracefile)
 				el_err = tracefile;
 #endif
 			term = lookupvar("TERM");
 			if (term)
 				setenv("TERM", term, 1);
 			else
 				unsetenv("TERM");
 			shname = arg0;
 			if (shname[0] == '-')
 				shname++;
 			el = el_init(shname, el_in, el_out, el_err);
 			if (el != NULL) {
 				if (hist)
 					el_set(el, EL_HIST, history, hist);
 				set_prompt_lit(lookupvar("PSlit"));
 				el_set(el, EL_SIGNAL, 1);
 				el_set(el, EL_ALIAS_TEXT, alias_text, NULL);
 				el_set(el, EL_ADDFN, "rl-complete",
 				    "ReadLine compatible completion function",
 				    _el_fn_complete);
 			} else {
 bad:
 				out2str("sh: can't initialize editing\n");
+			}
 			INTON;
 		} else if (!editing && el) {
 			INTOFF;
 			el_end(el);
 			el = NULL;
 			INTON;
+		}
 		if (el) {
 			if (Vflag)
 				el_set(el, EL_EDITOR, "vi");
 			else if (Eflag)
 				el_set(el, EL_EDITOR, "emacs");
 			el_set(el, EL_BIND, "^I",
 			    tabcomplete ? "rl-complete" : "ed-insert", NULL);
 			el_source(el, lookupvar("EDITRC"));
+		}
 	} else {
 		INTOFF;
 		if (el) {	/* no editing if not interactive */
 			el_end(el);
 			el = NULL;
+		}
 		if (hist) {
 			history_end(hist);
 			hist = NULL;
+		}
 		INTON;
+	}
+}
 void
 set_prompt_lit(const char *lit_ch)
+{
 	wchar_t wc;
 	if (!(iflag && editing && el))
 		return;
 	if (lit_ch == NULL) {
 		el_set(el, EL_PROMPT, getprompt);
 		return;
+	}
 	mbtowc(&wc, NULL, 1);		/* state init */
 	if (mbtowc(&wc, lit_ch, strlen(lit_ch)) <= 0)
 		el_set(el, EL_PROMPT, getprompt);
 	else
 		el_set(el, EL_PROMPT_ESC, getprompt, (int)wc);
+}
 void
 set_editrc(const char *fname)
+{
 	if (iflag && editing && el)
 		el_source(el, fname);
+}
 void
 sethistsize(const char *hs)
+{
 	int histsize;
 	HistEvent he;
 	if (hist != NULL) {
 		if (hs == NULL || *hs == '\0' || *hs == '-' ||
 		   (histsize = number(hs)) < 0)
 			histsize = 100;
 		history(hist, &he, H_SETSIZE, histsize);
 		history(hist, &he, H_SETUNIQUE, 1);
+	}
+}
 void
 setterm(const char *term)
+{
 	if (el != NULL && term != NULL)
 		if (el_set(el, EL_TERMINAL, term) != 0) {
 			outfmt(out2, "sh: Can't set terminal type %s\n", term);
 			outfmt(out2, "sh: Using dumb terminal settings.\n");
+		}
+}
 int
 inputrc(int argc, char **argv)
+{
 	if (argc != 2) {
 		out2str("usage: inputrc file\n");
 		return 1;
+	}
 	if (el != NULL) {
 		if (el_source(el, argv[1])) {
 			out2str("inputrc: failed\n");
 			return 1;
 		} else
 			return 0;
 	} else {
 		out2str("sh: inputrc ignored, not editing\n");
 		return 1;
+	}
+}
 /*
  *  This command is provided since POSIX decided to standardize
  *  the Korn shell fc command.  Oh well...
  */
 int
 histcmd(volatile int argc, char ** volatile argv)
+{
 	int ch;
 	const char * volatile editor = NULL;
 	HistEvent he;
 	volatile int lflg = 0, nflg = 0, rflg = 0, sflg = 0;
 	int i, retval;
 	const char *firststr, *laststr;
 	int first, last, direction;
 	char * volatile pat = NULL, * volatile repl;	/* ksh "fc old=new" crap */
 	static int active = 0;
 	struct jmploc jmploc;
 	struct jmploc *volatile savehandler;
 	char editfile[MAXPATHLEN + 1];
 	FILE * volatile efp;
 #ifdef __GNUC__
 	repl = NULL;	/* XXX gcc4 */
 	efp = NULL;	/* XXX gcc4 */
 #endif
 	if (hist == NULL)
 		error("history not active");
 	if (argc == 1)
 		error("missing history argument");
 	optreset = 1; optind = 1; /* initialize getopt */
 	while (not_fcnumber(argv[optind]) &&
 	      (ch = getopt(argc, argv, ":e:lnrs")) != -1)
 		switch ((char)ch) {
 		case 'e':
-			editor = optionarg;
+			editor = optarg;
 			break;
 		case 'l':
 			lflg = 1;
 			break;
 		case 'n':
 			nflg = 1;
 			break;
 		case 'r':
 			rflg = 1;
 			break;
 		case 's':
 			sflg = 1;
 			break;
 		case ':':
 			error("option -%c expects argument", optopt);
 			/* NOTREACHED */
 		case '?':
 		default:
 			error("unknown option: -%c", optopt);
 			/* NOTREACHED */
+		}
 	argc -= optind, argv += optind;
 	/*
 	 * If executing...
 	 */
 	if (lflg == 0 || editor || sflg) {
 		lflg = 0;	/* ignore */
 		editfile[0] = '\0';
 		/*
 		 * Catch interrupts to reset active counter and
 		 * cleanup temp files.
 		 */
 		savehandler = handler;
 		if (setjmp(jmploc.loc)) {
 			active = 0;
 			if (*editfile)
 				unlink(editfile);
 			handler = savehandler;
 			longjmp(handler->loc, 1);
+		}
 		handler = &jmploc;
 		if (++active > MAXHISTLOOPS) {
 			active = 0;
 			displayhist = 0;
 			error("called recursively too many times");
+		}
 		/*
 		 * Set editor.
 		 */
 		if (sflg == 0) {
 			if (editor == NULL &&
 			    (editor = bltinlookup("FCEDIT", 1)) == NULL &&
 			    (editor = bltinlookup("EDITOR", 1)) == NULL)
 				editor = DEFEDITOR;
 			if (editor[0] == '-' && editor[1] == '\0') {
 				sflg = 1;	/* no edit */
 				editor = NULL;
+			}
+		}
+	}
 	/*
 	 * If executing, parse [old=new] now
 	 */
 	if (lflg == 0 && argc > 0 &&
 	     ((repl = strchr(argv[0], '=')) != NULL)) {
 		pat = argv[0];
 		*repl++ = '\0';
 		argc--, argv++;
+	}
 	/*
 	 * If -s is specified, accept only one operand
 	 */
 	if (sflg && argc >= 2)
 		error("too many args");
 	/*
 	 * determine [first] and [last]
 	 */
 	switch (argc) {
 	case 0:
 		firststr = lflg ? "-16" : "-1";
 		laststr = "-1";
 		break;
 	case 1:
 		firststr = argv[0];
 		laststr = lflg ? "-1" : argv[0];
 		break;
 	case 2:
 		firststr = argv[0];
 		laststr = argv[1];
 		break;
 	default:
 		error("too many args");
 		/* NOTREACHED */
+	}
 	/*
 	 * Turn into event numbers.
 	 */
 	first = str_to_event(firststr, 0);
 	last = str_to_event(laststr, 1);
 	if (rflg) {
 		i = last;
 		last = first;
 		first = i;
+	}
 	/*
 	 * XXX - this should not depend on the event numbers
 	 * always increasing.  Add sequence numbers or offset
 	 * to the history element in next (diskbased) release.
 	 */
 	direction = first < last ? H_PREV : H_NEXT;
 	/*
 	 * If editing, grab a temp file.
 	 */
 	if (editor) {
 		int fd;
 		INTOFF;		/* easier */
 		snprintf(editfile, sizeof(editfile), "%s_shXXXXXX", _PATH_TMP);
 		if ((fd = mkstemp(editfile)) < 0)
 			error("can't create temporary file %s", editfile);
 		if ((efp = fdopen(fd, "w")) == NULL) {
 			close(fd);
 			error("can't allocate stdio buffer for temp");
+		}
+	}
 	/*
 	 * Loop through selected history events.  If listing or executing,
 	 * do it now.  Otherwise, put into temp file and call the editor
 	 * after.
+	 *
 	 * The history interface needs rethinking, as the following
 	 * convolutions will demonstrate.
 	 */
 	history(hist, &he, H_FIRST);
 	retval = history(hist, &he, H_NEXT_EVENT, first);
 	for (;retval != -1; retval = history(hist, &he, direction)) {
 		if (lflg) {
 			if (!nflg)
 				out1fmt("%5d ", he.num);
 			out1str(he.str);
 		} else {
 			const char *s = pat ?
 			   fc_replace(he.str, pat, repl) : he.str;
 			if (sflg) {
 				if (displayhist) {
 					out2str(s);
+				}
 				evalstring(strcpy(stalloc(strlen(s) + 1), s), 0);
 				if (displayhist && hist) {
 					/*
 					 *  XXX what about recursive and
 					 *  relative histnums.
 					 */
 					history(hist, &he, H_ENTER, s);
+				}
 				break;
 			} else
 				fputs(s, efp);
+		}
 		/*
 		 * At end?  (if we were to lose last, we'd sure be
 		 * messed up).
 		 */
 		if (he.num == last)
 			break;
+	}
 	if (editor) {
 		char *editcmd;
 		size_t cmdlen;
 		fclose(efp);
 		cmdlen = strlen(editor) + strlen(editfile) + 2;
 		editcmd = stalloc(cmdlen);
 		snprintf(editcmd, cmdlen, "%s %s", editor, editfile);
 		evalstring(editcmd, 0);	/* XXX - should use no JC command */
 		INTON;
 		readcmdfile(editfile);	/* XXX - should read back - quick tst */
 		unlink(editfile);
+	}
 	if (lflg == 0 && active > 0)
 		--active;
 	if (displayhist)
 		displayhist = 0;
 	return 0;
+}
 STATIC const char *
 fc_replace(const char *s, char *p, char *r)
+{
 	char *dest;
 	int plen = strlen(p);
 	STARTSTACKSTR(dest);
 	while (*s) {
 		if (*s == *p && strncmp(s, p, plen) == 0) {
 			while (*r)
 				STPUTC(*r++, dest);
 			s += plen;
 			*p = '\0';	/* so no more matches */
 		} else
 			STPUTC(*s++, dest);
+	}
 	STACKSTRNUL(dest);
 	dest = grabstackstr(dest);
 	return (dest);
+}
 int
 not_fcnumber(char *s)
+{
 	if (s == NULL)
 		return 0;
         if (*s == '-')
                 s++;
 	return (!is_number(s));
+}
 int
 str_to_event(const char *str, int last)
+{
 	HistEvent he;
 	const char *s = str;
 	int relative = 0;
 	int i, retval;
 	retval = history(hist, &he, H_FIRST);
 	switch (*s) {
 	case '-':
 		relative = 1;
 		/*FALLTHROUGH*/
 	case '+':
 		s++;
+	}
 	if (is_number(s)) {
 		i = number(s);
 		if (relative) {
 			while (retval != -1 && i--) {
 				retval = history(hist, &he, H_NEXT);
+			}
 			if (retval == -1)
 				retval = history(hist, &he, H_LAST);
 		} else {
 			retval = history(hist, &he, H_NEXT_EVENT, i);
 			if (retval == -1) {
 				/*
 				 * the notion of first and last is
 				 * backwards to that of the history package
 				 */
 				retval = history(hist, &he,
 						last ? H_FIRST : H_LAST);
+			}
+		}
 		if (retval == -1)
 			error("history number %s not found (internal error)",
 			       str);
 	} else {
 		/*
 		 * pattern
 		 */
 		retval = history(hist, &he, H_PREV_STR, str);
 		if (retval == -1)
 			error("history pattern not found: %s", str);
+	}
 	return (he.num);
+}
 #else
 int
 histcmd(int argc, char **argv)
+{
 	error("not compiled with history support");
 	/* NOTREACHED */
+}
 int
 inputrc(int argc, char **argv)
+{
 	error("not compiled with history support");
 	/* NOTREACHED */
+}
 #endif