[hackers] [sbase] ed: Move modflag=0 to clearundo() || Roberto E. Vargas Caballero

[git]

commit 58c9739532b83220ccf8ac8e6835cf1c6769a282
Author:     Roberto E. Vargas Caballero <k...@shike2.com>
AuthorDate: Fri Jan 1 11:17:00 2016 +0100
Commit:     sin <s...@2f30.org>
CommitDate: Fri Jan 1 10:39:59 2016 +0000

    ed: Move modflag=0 to clearundo()
    
    When we discard the content of an undo buffer
    is because we don't need it anymore, and it means
    that we don't care about the modify state of the buffer
    so we can reset the modflag in clearundo(), and
    remove this assignation each time clearundo() is called.

diff --git a/ed.c b/ed.c
index 623c6b4..751e973 100644
--- a/ed.c
+++ b/ed.c
@@ -247,6 +247,7 @@ clearundo(void)
        free(udata.vec);
        udata.vec = NULL;
        newcmd = udata.nr = udata.cap = 0;
+       modflag = 0;
 }
 
 static void
@@ -342,7 +343,6 @@ setscratch()
                error("input/output error in scratch file");
        relink(k, k, k, k);
        clearundo();
-       modflag = 0;
 }
 
 static void
@@ -1211,7 +1211,6 @@ repeat:
                deflines(curln, curln);
                doread(savfname);
                clearundo();
-               modflag = 0;
                break;
        default:
                error("unknown command");