--- /sys/src/cmd/aux/htmlsanitize.c
+++ /sys/src/cmd/aux/htmlsanitize.c
@@ -0,0 +1,56 @@
+/*
+ * Because sed can't handle really long lines.
+ */
+#include
+#include
+#include
+
+Biobuf bout;
+
+void
+cat(Biobuf *b)
+{
+ int c;
+
+ while((c = Bgetrune(b)) >= 0){
+ switch(c){
+ case '<':
+ Bprint(&bout, "<");
+ break;
+ case '>':
+ Bprint(&bout, ">");
+ break;
+ case '&':
+ Bprint(&bout, "&");
+ break;
+ default:
+ Bputrune(&bout, c);
+ break;
+ }
+ }
+}
+
+void
+main(int argc, char *argv[])
+{
+ int i;
+ Biobuf *b, bin;
+
+ argv0 = "htmlsanitize";
+ Binit(&bout, 1, OWRITE);
+ if(argc == 1){
+ Binit(&bin, 0, OREAD);
+ cat(&bin);
+ }
+ else for(i=1; i