From dde61c8a6ee767bbfa20018ab277e3e38e3a613f Mon Sep 17 00:00:00 2001
From: Roman Kollar <rkollar@redhat.com>
Date: Fri, 12 Oct 2012 13:40:12 +0200
Subject: [PATCH] Reverse patch for history handling in loops

Originally reported at Red Hat Bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=814069

Reverse patch for commit 23a51b0a709628af57729a07cbbfae3c95e98e6f in the upstream repo

Adjusted by Jaromir Koncicky (jkoncick) to fit with version 6.18.01
---
 sh.func.c | 137 +-------------------------------------------------------------
 1 file changed, 1 insertion(+), 136 deletions(-)

diff --git a/sh.func.c b/sh.func.c
index 31c5330..b564e53 100644
--- a/sh.func.c
+++ b/sh.func.c
@@ -61,7 +61,6 @@ static	void	doagain		(void);
 static  const char *isrchx	(int);
 static	void	search		(int, int, Char *);
 static	int	getword		(struct Strbuf *);
-static	struct wordent	*histgetword	(struct wordent *);
 static	void	toend		(void);
 static	void	xecho		(int, Char **);
 static	int	islocale_var	(Char *);
@@ -754,7 +753,6 @@ search(int type, int level, Char *goal)
 {
     struct Strbuf word = Strbuf_INIT;
     Char *cp;
-    struct wordent *histent = NULL, *ohistent = NULL;
 
     Stype = type;
     Sgoal = goal;
@@ -767,28 +765,12 @@ search(int type, int level, Char *goal)
     }
     cleanup_push(&word, Strbuf_cleanup);
     do {
-	    
-	if (intty) {
-	    histent = xmalloc(sizeof(*histent));
-	    ohistent = xmalloc(sizeof(*histent));
-	    ohistent->word = STRNULL;
-	    ohistent->next = histent;
-	    histent->prev = ohistent;
-	}
-
 	if (intty && fseekp == feobp && aret == TCSH_F_SEEK)
 	    printprompt(1, isrchx(type == TC_BREAK ? zlast : type));
 	/* xprintf("? "), flush(); */
 	(void) getword(&word);
 	Strbuf_terminate(&word);
 
-	if (intty && Strlen(word.s) > 0) {
-	    histent->word = Strsave(word.s);
-	    histent->next = xmalloc(sizeof(*histent));
-	    histent->next->prev = histent;
-	    histent = histent->next;
-	}
-
 	switch (srchx(word.s)) {
 
 	case TC_ELSE:
@@ -864,126 +846,12 @@ search(int type, int level, Char *goal)
 		level = -1;
 	    break;
 	}
-	if (intty) {
-	    ohistent->prev = histgetword(histent);
-	    ohistent->prev->next = ohistent;
-	    savehist(ohistent, 0);
-	    freelex(ohistent);
-	    xfree(ohistent);
-	} else 
-	    (void) getword(NULL);
+    (void) getword(NULL);
     } while (level >= 0);
  end:
     cleanup_until(&word);
 }
 
-static struct wordent *
-histgetword(struct wordent *histent) 
-{
-    int found = 0, first;
-    eChar c, d;
-    int e;
-    struct Strbuf *tmp;
-    tmp = xmalloc(sizeof(*tmp));
-    tmp->size = 0;
-    tmp->s = NULL;
-    c = readc(1);
-    d = 0;
-    e = 0;
-    for (;;) {
-	tmp->len = 0;
-	Strbuf_terminate (tmp);
-	while (c == ' ' || c == '\t')
-	    c = readc(1);
-	if (c == '#')
-	    do
-		c = readc(1);
-	    while (c != CHAR_ERR && c != '\n');
-	if (c == CHAR_ERR)
-	    goto past;
-	if (c == '\n') 
-	    goto nl;
-	unreadc(c);
-	found = 1;
-	first = 1;
-	do {
-	    e = (c == '\\');
-	    c = readc(1);
-	    if (c == '\\' && !e) {
-		if ((c = readc(1)) == '\n') {
-		    e = 1;
-		    c = ' ';
-		} else {
-		    unreadc(c);
-		    c = '\\';
-		}
-	    }
-	    if ((c == '\'' || c == '"') && !e) {
-		if (d == 0)
-		    d = c;
-		else if (d == c)
-		    d = 0;
-	    }
-	    if (c == CHAR_ERR)
-		goto past;
-	    
-	    Strbuf_append1(tmp, (Char) c);
-	    
-	    if (!first && !d && c == '(' && !e) {
-		break;
-	    }
-	    first = 0;
-	} while (d || e || (c != ' ' && c != '\t' && c != '\n'));
-	tmp->len--;
-	if (tmp->len) {
-	    Strbuf_terminate(tmp);
-	    histent->word = Strsave(tmp->s);
-	    histent->next = xmalloc(sizeof (*histent));
-	    histent->next->prev = histent;
-	    histent = histent->next;
-	}
-	if (c == '\n') {
-	nl:
-	    tmp->len = 0;
-	    Strbuf_append1(tmp, (Char) c);
-	    Strbuf_terminate(tmp);
-	    histent->word = Strsave(tmp->s);
-	    return histent;
-	}
-    }
-    
-past:
-    switch (Stype) {
-
-    case TC_IF:
-	stderror(ERR_NAME | ERR_NOTFOUND, "then/endif");
-	break;
-
-    case TC_ELSE:
-	stderror(ERR_NAME | ERR_NOTFOUND, "endif");
-	break;
-
-    case TC_BRKSW:
-    case TC_SWITCH:
-	stderror(ERR_NAME | ERR_NOTFOUND, "endsw");
-	break;
-
-    case TC_BREAK:
-	stderror(ERR_NAME | ERR_NOTFOUND, "end");
-	break;
-
-    case TC_GOTO:
-	setname(short2str(Sgoal));
-	stderror(ERR_NAME | ERR_NOTFOUND, "label");
-	break;
-
-    default:
-	break;
-    }
-    /* NOTREACHED */
-    return NULL;
-}
-
 static int
 getword(struct Strbuf *wp)
 {
-- 
1.7.11.4