X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/runlisp/blobdiff_plain/1dff83f1891c628ec7dab32bc4958f91fc6e9464..d2dbcc6f1030735629591baea985f3519c02488a:/lib.c

diff --git a/lib.c b/lib.c
index 251d932..a73f0d0 100644
--- a/lib.c
+++ b/lib.c
@@ -51,7 +51,7 @@ void set_progname(const char *prog)
   const char *p;
 
   p = strrchr(prog, '/');
-  progname = p ? p + 1 : progname;
+  progname = p ? p + 1 : prog;
 }
 
 /* Report an error or warning in Unix style, given a captured argument
@@ -1379,7 +1379,11 @@ static const char *subst(const char *p, const char *l,
   size_t n;
 
   /* It would be best if we could process literal text at high speed.  To
-   * this end,
+   * this end, we have a table, indexed by the low-order bits of F, to tell
+   * us which special characters we need to stop at.  This way, we can use
+   * `strcspn' to skip over literal text and stop at the next character which
+   * needs special handling.  Entries in this table with a null pointer
+   * correspond to impossible flag settings.
    */
   static const char *const delimtab[] = {