[hackers] [sbase] Audit unexpand(1) || FRIGN

[git]

commit a16238cb0dd4853526114de7b06734b70a14ca70
Author: FRIGN <d...@frign.de>
Date:   Tue Mar 17 23:45:03 2015 +0100

    Audit unexpand(1)
    
    I checked the algorithm already a while ago. What was left was a
    couple of style-fixes.

diff --git a/README b/README
index e21dd35..92f76f7 100644
--- a/README
+++ b/README
@@ -81,7 +81,7 @@ The following tools are implemented ('*' == finished, '#' == 
UTF-8 support,
 =*| true            yes                          none
 =*| tty             yes                          none
 =*| uname           yes                          none
-#*  unexpand        yes                          none
+#*| unexpand        yes                          none
 =*  uniq            yes                          none
 =*| unlink          yes                          none
 =*  uudecode        yes                          none
diff --git a/unexpand.c b/unexpand.c
index c565670..c0f6d38 100644
--- a/unexpand.c
+++ b/unexpand.c
@@ -25,6 +25,7 @@ parselist(const char *s)
                        eprintf("tablist must be ascending\n");
        }
        tablist = ereallocarray(tablist, i + 1, sizeof(*tablist));
+
        return i;
 }
 
@@ -148,18 +149,19 @@ main(int argc, char *argv[])
 
        tablistlen = parselist(tl);
 
-       if (argc == 0) {
+       if (!argc) {
                unexpand("<stdin>", stdin);
        } else {
-               for (; argc > 0; argc--, argv++) {
-                       if (!(fp = fopen(argv[0], "r"))) {
-                               weprintf("fopen %s:", argv[0]);
+               for (; *argv; argc--, argv++) {
+                       if (!(fp = fopen(*argv, "r"))) {
+                               weprintf("fopen %s:", *argv);
                                ret = 1;
                                continue;
                        }
-                       unexpand(argv[0], fp);
+                       unexpand(*argv, fp);
                        fclose(fp);
                }
        }
+
        return ret;
 }