[hackers] [PATCH 5/6] ed: Improve execsh

[Roberto E. Vargas Caballero]

---
 ed.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/ed.c b/ed.c
index 16fbe04..60673a2 100644
--- a/ed.c
+++ b/ed.c
@@ -1061,13 +1061,21 @@ execsh(void)
        }
 
        while ((c = input()) != '\0') {
-               if (c == '%' && (cmd.siz == 0 || cmd.str[cmd.siz - 1] != '\\')) 
{
+               switch (c) {
+               case '%':
                        if (savfname[0] == '\0')
                                error("no current filename");
                        repl = 1;
                        for (p = savfname; *p; ++p)
                                addchar(*p, &cmd);
-               } else {
+                       break;
+               case '\\':
+                       c = input();
+                       if (c != '%') {
+                               back(c);
+                               c = '\\';
+                       }
+               default:
                        addchar(c, &cmd);
                }
        }
-- 
2.37.3