report: keep four-part versions after v or ==

The IPv4 rule replaced not1mm's new version in "v26.11.10.1" and
"not1mm==26.11.10.1" with <ip> (report CD-GB29BZ), because only a digit
or dot before an address kept it. Also keep ones after v, V or ==; an
address after a single =, as in addr=192.168.1.20, is still replaced.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

report

@@ -55,7 +55,9 @@ regex_escape() {
 # terminal codes or progress redraws, and with personal details replaced.
 # LC_ALL=C so the ranges mean bytes, whatever the locale. IPv4 addresses are
 # replaced twice because a match takes the character after an address, which
-# can be the one before the next; dotted versions such as 1.0.4.1.3 are kept.
+# can be the one before the next; dotted versions such as 1.0.4.1.3 are kept,
+# and so are four-part ones after v or == (v26.11.10.1, not1mm==26.11.10.1).
+# A single = doesn't count, so addr=192.168.1.20 is still replaced.
 redact() {
   local home user host
   home="$(regex_escape "$HOME")"
@@ -68,8 +70,8 @@ redact() {
     -e "s#${home}([/[:space:]'\":]|\$)#~\\1#g" \
     -e 's/[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}/<email>/g' \
     -e 's/[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)*\.ts\.net/<tailscale-name>/g' \
-    -e 's/(^|[^0-9.])([0-9]{1,3}\.){3}[0-9]{1,3}([^0-9.]|$)/\1<ip>\3/g' \
-    -e 's/(^|[^0-9.])([0-9]{1,3}\.){3}[0-9]{1,3}([^0-9.]|$)/\1<ip>\3/g' \
+    -e 's/(^=?|[^0-9.vV=]|[^=]=)([0-9]{1,3}\.){3}[0-9]{1,3}([^0-9.]|$)/\1<ip>\3/g' \
+    -e 's/(^=?|[^0-9.vV=]|[^=]=)([0-9]{1,3}\.){3}[0-9]{1,3}([^0-9.]|$)/\1<ip>\3/g' \
     -e "s/(^|[^A-Za-z0-9_-])${user}([^A-Za-z0-9_-]|\$)/\\1<user>\\2/g" \
     -e "s/(^|[^A-Za-z0-9_-])${host}([^A-Za-z0-9_-]|\$)/\\1<host>\\2/g" \
     "$1"