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diff -upr tcsh-6.18.00_orig/sh.hist.c tcsh-6.18.00_work/sh.hist.c
--- tcsh-6.18.00_orig/sh.hist.c 2013-03-28 10:13:52.165407699 +0100
+++ tcsh-6.18.00_work/sh.hist.c 2013-03-28 10:19:49.168703936 +0100
@@ -99,7 +99,7 @@ hremove(struct Hist *hp)
/* Prune length of history list to specified size by history variable. */
PG_STATIC void
-discardExcess(int histlen)
+discardExcess(int histlen, int flg)
{
struct Hist *hp, *np;
if (histTail == NULL) {
@@ -110,13 +110,13 @@ discardExcess(int histlen)
* the list is still too long scan the whole list as before. But only do a
* full scan if the list is more than 6% (1/16th) too long. */
while (histCount > (unsigned)histlen && (np = Histlist.Hnext)) {
- if (eventno - np->Href >= histlen || histlen == 0)
+ if ((eventno - np->Href >= histlen || histlen == 0) && ! (flg & HIST_MERGE))
hremove(np), hfree(np);
else
break;
}
while (histCount > (unsigned)histlen && (np = histTail) != &Histlist) {
- if (eventno - np->Href >= histlen || histlen == 0)
+ if ((eventno - np->Href >= histlen || histlen == 0) || flg & HIST_MERGE)
hremove(np), hfree(np);
else
break;
@@ -153,7 +153,7 @@ savehist(
}
if (sp)
(void) enthist(++eventno, sp, 1, flg, histlen);
- discardExcess(histlen);
+ discardExcess(histlen, flg);
}
#define USE_JENKINS_HASH 1
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