DumpConfig's lines that set nothing start with #, and a line starting with # runs as nothing at an exec, a ctl or the init file

DumpConfig's information lines ("Platform: tty", "Startup config: ...")
began with words. Written back, as the report means to be, or clicked,
each ran as a shell command or failed as an unknown control message.
Each now starts with `# `. A line starting with `#` is a comment, as in a
shell: it runs as nothing, silently, at an exec, at the root's, a pane's
or a column's ctl, and in the init file. Documented in fs.md and
config.md.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/ninep/cols.zig b/src/ninep/cols.zig
index f07c7f39..24fb590c 100644
--- a/src/ninep/cols.zig
+++ b/src/ninep/cols.zig
@@ -163,7 +163,7 @@ pub fn writeCtl(p: *Pardes, req: Req, serial: u32) Reply {
     var lines = std.mem.splitScalar(u8, req.data, '\n');
     while (lines.next()) |raw| {
         const line = std.mem.trim(u8, raw, " \t\r");
-        if (line.len == 0) continue;
+        if (line.len == 0 or pardes.exec.isComment(line)) continue;
         const word = line[0 .. std.mem.indexOfAny(u8, line, " \t") orelse line.len];
         const takes = for ([_][]const u8{ "Delcol", "Joincol", "New", "Tty" }) |w| {
             if (std.mem.eql(u8, w, word)) break true;