[hackers] [sbase] Escape correctly characters in getrhs() || Roberto E. Vargas Caballero

[git]

commit 3e130cee6698c3c3f95468a7b8a4e782ea474338
Author:     Roberto E. Vargas Caballero <k...@shike2.com>
AuthorDate: Wed Dec 16 19:44:44 2015 +0100
Commit:     sin <s...@2f30.org>
CommitDate: Wed Dec 16 20:16:12 2015 +0000

    Escape correctly characters in getrhs()
    
    getrhs() must remove \ excepts in the case of & and \d
    (where d is a digit), because in this case are sequences
    understood by addsub(), so addsub() must be able to see
    them.

diff --git a/ed.c b/ed.c
index 9a80eb9..33b4837 100644
--- a/ed.c
+++ b/ed.c
@@ -890,6 +890,10 @@ getrhs(int delim)
        s = NULL;
        siz = cap = 0;
        while ((c = input()) != '\n' && c != EOF && c != delim) {
+               if (c == '\\') {
+                       if ((c = input()) == '&' || isdigit(c))
+                               s = addchar(c, s, &siz, &cap);
+               }
                s = addchar(c, s, &siz, &cap);
        }
        s = addchar('\0', s, &siz, &cap);