A look line takes `?re?` after its colon, as addr does

`file:?foo?`, `@p5:?foo?` and `:?foo?` were not taken for addresses (the
first character had to be one of `0-9+-/$.#,;`), so they went the path
way and found nothing.

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

1 files changed, 2 insertions, 2 deletions

diff --git a/docs/fs.md b/docs/fs.md
index fbf54c3e..2149fbcf 100644
--- a/docs/fs.md
+++ b/docs/fs.md
@@ -466,12 +466,12 @@ unfinished was cut short. A fragment never runs on its
 own. A line or Edit block held past 1 MiB is refused (EINVAL).
 
 `@p<serial>:<address>` addresses the pane with that serial as `file:<address>`
-does a file, with any sam address (`/re/`, `#n`, `$`, `0/re/`, a range),
+does a file, with any sam address (`/re/`, `?re?`, `#n`, `$`, `0/re/`, a range),
 a terminal too: its body is then the text of its logical lines (the lines
 a `+Search` of it lists), addressed from its cursor, and the match is
 selected. A miss, and a serial no pane has (with a line, `@p77:3`, as
 with any other address), each log an `err`, and look reads back empty. A look takes acme's addresses after a colon (editors/acme/look.c:450): a
-line written to `look` as `file:/re/`, `file:#n`, `file:$` or any address
+line written to `look` as `file:/re/`, `file:?re?`, `file:#n`, `file:$` or any address
 opens (or finds) the file and selects what the address names. **The
 address is evaluated from the file's dot**, as acme's is: `file:/re/`
 finds the next match after the current selection, not the first in the