[css-env-1] Specify argument grammar for env() function w3c/csswg-drafts@a16b853

Author: triple-underscore

css-env-ja.html

@@ -106,8 +106,8 @@
 ●●options
 
 spec_title:CSS Environment Variables Module Level 1
-spec_date:2026-01-15
-trans_update:2026-01-17
+spec_date:2026-03-12
+trans_update:2026-03-14
 	source_checked:250429
 page_state_key:CSS
 original_url:https://drafts.csswg.org/css-env-1/
@@ -157,6 +157,7 @@
 I.FontFace:~CSSFONTLOADING#fontface
 
 	●css
+t.env-args:#typedef-env-args
 t.declaration-value:~CSSSYN#typedef-declaration-value
 t.custom-property-name:~CSSVAR#typedef-custom-property-name
 t.length:~CSSVAL#length-value
@@ -192,16 +193,22 @@
 	●用語
 環境~変数:#css-environment-variable
 次元~数:#_number-of-dimensions
+代入-:#substitute-an-env
+
 	●用語（CSS
+大きい表示域~size:~CSSVAL#large-viewport-size
+動的な表示域~size:~CSSVAL#dynamic-viewport-size
+
+算出d値の時点で無効:~CSSVAL5#invalid-at-computed-value-time
+引数~文法:~CSSVAL5#argument-grammar
 
 ~custom~prop:~CSSVAR#custom-property
+
 ~at-規則:~CSSSYN#at-rule
-代入-:#substitute-an-env
-算出d値の時点で無効:#invalid-at-computed-value-time
+
 略式~prop:~CASCADE#shorthand-property
+
 ~layout表示域:~CSSOMVIEW#layout-viewport
-大きい表示域~size:~CSSVAL#large-viewport-size
-動的な表示域~size:~CSSVAL#dynamic-viewport-size
 
 	●用語（他
 I.Document:~DOM4#document
@@ -305,6 +312,7 @@
 	~segmentたち:panes of content
 	媒体~query:MQ
 	-:possibilities
+	何も後続しない:bare 〜 with nothing following it
 
 ●●images
 
@@ -320,6 +328,8 @@
     Tab Atkins Jr.; Simon Sapin. ＜CSS Syntax Module Level 3＞. URL: https://drafts.csswg.org/css-syntax/
 [CSS-VALUES-4]
     Tab Atkins Jr.; Elika Etemad. ＜CSS Values and Units Module Level 4＞. URL: https://drafts.csswg.org/css-values-4/
+[CSS-VALUES-5]
+    Tab Atkins Jr.; Elika Etemad; Miriam Suzanne. ＜CSS Values and Units Module Level 5＞. URL: https://drafts.csswg.org/css-values-5/
 [CSS-VARIABLES-1]
     Tab Atkins Jr.. ＜CSS Custom Properties for Cascading Variables Module Level 1＞. URL: https://drafts.csswg.org/css-variables/
 [CSS-VARIABLES-2]
@@ -918,6 +928,25 @@ <h2 title="Using Environment Variables: the env() notation">3. 環境~変数の
 	= env( `custom-ident$t `integer$t*, `declaration-value$t? )
 </pre>
 
+<p>
+`env$f 関数の`引数~文法$は：
+◎
+The env() function’s argument grammar is:
+</p>
+
+<pre class="prod">
+`env-args@t
+	= env( `declaration-value$t, `declaration-value$t? )
+</pre>
+
+<p>
+`var$f 同様に，何も後続しない~commaを利用できる
+— それは、
+2 個目の `declaration-value$t として空な連列が渡されたことを指示する。
+◎
+Like var(), a bare comma can be used with nothing following it, indicating that the second &lt;declaration-value&gt; was passed, just as an empty sequence.
+</p>
+
 <p>
 `env$f 関数は、［
 どの要素のどの~propの値／