ksh vi mode werase (^W) handling

[Darrin Chandler]

Hi,

Here's a diff to make ksh vi mode handle werase more like vi. It's
really irritating to have whole paths go away on ^W instead of just the
last bit.


--- /usr/src/bin/ksh/vi.c       Mon Apr 10 07:38:59 2006
+++ vi.c        Wed Jun  3 16:54:07 2009
@@ -416,9 +416,9 @@ vi_hook(int ch)
                        int i;
                        int n = srchlen;
 
-                       while (n > 0 && isspace(locpat[n - 1]))
+                       while (n > 0 && !is_wordch(locpat[n - 1]))
                                n--;
-                       while (n > 0 && !isspace(locpat[n - 1]))
+                       while (n > 0 && is_wordch(locpat[n - 1]))
                                n--;
                        for (i = srchlen; --i >= n; )
                                es->linelen -= char_len((unsigned 
char)locpat[i]);
@@ -1598,9 +1598,9 @@ Backword(int argcnt)
 
        ncursor = es->cursor;
        while (ncursor > 0 && argcnt--) {
-               while (--ncursor >= 0 && isspace(es->cbuf[ncursor]))
+               while (--ncursor >= 0 && !is_wordch(es->cbuf[ncursor]))
                        ;
-               while (ncursor >= 0 && !isspace(es->cbuf[ncursor]))
+               while (ncursor >= 0 && is_wordch(es->cbuf[ncursor]))
                        ncursor--;
                ncursor++;
        }