build, data: skk2ktrans keeps the SKK header; the recipe names every generator; an inert config line goes

An SKK dictionary's ";;" header carries its license notice, which
LICENSES/README.md relies on for kanji.dict, and skk2ktrans dropped
every ";;" line: a re-import as map/README describes lost the grant.
The leading comment block is kept now.  README's regenerate-and-verify
recipe omitted mktelex.py although verify-map checks its output; and
the Dockerfile set a shell variable named egrep in plan9's config that
9c never reads, calling egrep by name.

Dockerfile

@@ -35,7 +35,6 @@ RUN export DEBUGINFOD_URLS=https://debuginfod.archlinux.org \
 		"$debugdir/${buildid#??}.debug" \
 	&& rm -rf /root/.cache/debuginfod_client
 
-RUN printf "egrep='grep -E'\n" > /usr/lib/plan9/config
 RUN dbus-uuidgen --ensure=/etc/machine-id
 
 ENV PLAN9=/usr/lib/plan9

README.md

@@ -183,16 +183,18 @@ is not started and the popup is disabled.
 
 ## Dictionary data
 
-After changing an input source, regenerate and verify the dictionaries:
+After changing an input source, regenerate and verify the maps and
+dictionaries:
 
 ```sh
+python3 map/mktelex.py >map/telex.map
 map/mkemoji >map/emoji.dict
 map/mkhanja >map/hanja.dict
 make verify-map
 ```
 
-See [`map/README`](map/README) for Hanja import and Japanese dictionary
+See [`map/README`](map/README) for the emoji, Hanja, and Japanese data and
-generation.
+where it comes from.
 
 ## Benchmark
 

map/skk2ktrans

@@ -36,10 +36,16 @@ function add(k, v, id) {
 		row[k] = row[k] " "
 	row[k] = row[k] v
 }
-/^;;/ || /^[[:space:]]*$/ {
+/^;;/ {
+	if(!body)		# the header, with its license notice, is kept
+		print
+	next
+}
+/^[[:space:]]*$/ {
 	next
 }
 {
+	body = 1
 	if(!match($0, /[[:space:]]+/))
 		fail("missing candidate list")
 	key = substr($0, 1, RSTART-1)

tests/data/skk/expected.tsv

@@ -1,3 +1,4 @@
+;; converter fixture; the test transcodes this file to EUC-JP
 かんじ	漢字 幹事 感じ
 えがお	笑顔
 きごう	記号 普通