Variables: Export Data Sets refuses more data sets or variables than Import Data Sets reads

dataset.export checked only the 1 MiB size, so a document with more than
1000 data sets or 256 variables exported a CSV that dataset.import then
refused. Export now refuses such a document with a message naming the
limit, and the messages have rows in every complete-message catalog.

crates/engine/src/cmd/variablecmds.rs

@@ -740,7 +740,7 @@ pub fn specs() -> Vec<CommandSpec> {
             "Export Data Sets…",
             ["Window", "Variables"],
             None,
-            "{path?} write every dataset as CSV (header: name, then variables); without path → {csv, datasets}",
+            "{path?} write every dataset as CSV (header: name, then variables); without path → {csv, datasets}. Refused when the document has more than 1000 data sets or 256 variables, the most dataset.import reads",
             has_doc,
             dataset_export
         ),

crates/engine/src/cmd/variablecmds/csv.rs

@@ -341,12 +341,20 @@ pub(super) fn dataset_import(s: &mut Session, p: &Value) -> Result<Value> {
 }
 
 /// Export every dataset as CSV (`name` then variables). With `path`, write the file; else return `{csv}`.
+/// A document with more data sets or variables than [`dataset_import`] reads is refused.
 pub(super) fn dataset_export(s: &mut Session, p: &Value) -> Result<Value> {
     const C: &str = "dataset.export";
     let st = s.doc()?;
     if st.doc.variables.variables.is_empty() {
         return Err(bad(C, "define a variable first"));
     }
+    if st.doc.variables.datasets.len() > MAX_CSV_ROWS {
+        return Err(bad(C, format!("more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}")));
+    }
+    // The name column comes first, so the import's column cap leaves room for this many variables.
+    if st.doc.variables.variables.len() > MAX_CSV_COLS {
+        return Err(bad(C, format!("more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}")));
+    }
     let csv = datasets_to_csv(&st.doc.variables);
     if csv.len() > MAX_CSV_BYTES {
         return Err(bad(C, format!("CSV would be larger than {MAX_CSV_BYTES} bytes")));

crates/engine/src/tests/variables.rs

@@ -1325,6 +1325,33 @@ fn datasets_csv_keeps_spaces_in_quoted_cells() {
     assert_eq!(value("C"), text_value(" quoted "));
 }
 
+/// Export refuses a document with more data sets or variables than `dataset.import` reads, so
+/// every file it writes imports back: 1,000 data sets and 256 variables export and import, and
+/// one more of either is refused.
+#[test]
+fn datasets_export_refuses_more_than_import_reads() {
+    let mut s = session();
+    let header: Vec<String> = (1..=256).map(|i| format!("V{i}")).collect();
+    let rows: String = (1..=1000).map(|i| format!("Set {i},x\n")).collect();
+    s.execute("dataset.import", &json!({"csv": format!("name,{}\n{rows}", header.join(","))})).unwrap();
+    let csv = s.execute("dataset.export", &json!({})).unwrap()["csv"].as_str().unwrap().to_string();
+    s.execute("dataset.import", &json!({"csv": csv})).unwrap();
+
+    s.execute("dataset.new", &json!({"name": "Set 1001"})).unwrap();
+    let err = s.execute("dataset.export", &json!({})).unwrap_err().to_string();
+    assert!(err.contains("more than 1000 data sets"), "{err}");
+    s.execute("dataset.delete", &json!({"names": ["Set 1001"]})).unwrap();
+    s.execute("dataset.export", &json!({})).unwrap();
+
+    s.execute("variable.define", &json!({"name": "V257", "kind": "text"})).unwrap();
+    let err = s.execute("dataset.export", &json!({})).unwrap_err().to_string();
+    assert!(err.contains("more than 256 variables"), "{err}");
+    let dir = Folder::new("vars-csv-caps");
+    let out = dir.file("sets.csv");
+    assert!(s.execute("dataset.export", &json!({"path": out})).is_err());
+    assert!(!std::path::Path::new(&out).exists(), "no file is written");
+}
+
 /// A header row with a tab and no comma outside quotes makes tabs the separator; a quoted cell
 /// may then hold tabs and commas. A header row with a comma outside quotes keeps commas, even
 /// when a cell holds a tab. A tab-separated header with an unclosed quote fails with the reason.

crates/ui-egui/src/i18n/ca.tsv

@@ -5597,6 +5597,8 @@ digits	Malayalam	Malaiàlam
 @msg	unsupported native docking operation	operació d’acoblament nadiua no compatible
 @msg	unsupported: {0}	no compatible: {0}
 @msg	variables are locked	les variables estan blocades
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	més de {MAX_CSV_ROWS} conjunts de dades: Importa conjunts de dades en llegeix com a màxim {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	més de {MAX_CSV_COLS} variables: Importa conjunts de dades en llegeix com a màxim {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	les variables que no són text s’han omès: {kinds}
 @msg	VectorCraft doesn't search other apps' or the system's folders: {path}	VectorCraft no cerca a les carpetes d’altres aplicacions ni del sistema: {path}
 @msg	VectorCraft doesn't search the Shared or Public folder in Users: {path}	VectorCraft no cerca a la carpeta Shared o Public d’Usuaris: {path}

crates/ui-egui/src/i18n/cs.tsv

@@ -4786,6 +4786,8 @@ imageTrace	Outline	Obrys
 @msg	unknown workspace (one of {_1})	neznámý pracovní prostor (jeden z {_1})
 @msg	unsupported: {0}	nepodporováno: {0}
 @msg	variables are locked	proměnné jsou zamčené
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	více než {MAX_CSV_ROWS} sad dat: Importovat sady dat načte nejvýše {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	více než {MAX_CSV_COLS} proměnných: Importovat sady dat načte nejvýše {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	proměnné, které nejsou textové, byly vynechány: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` a `options.{key}: {inner}` si odporují: zadejte volbu jen jednou
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	soubory verze {0} nelze komprimovat: komprimované soubory otevírá až verze {COMPRESSED_SINCE} a novější

crates/ui-egui/src/i18n/de.tsv

@@ -4395,6 +4395,8 @@ theme	Appearance	Erscheinungsbild
 @msg	unknown workspace (one of {_1})	unbekannter Arbeitsbereich (einer von {_1})
 @msg	unsupported: {0}	nicht unterstützt: {0}
 @msg	variables are locked	die Variablen sind gesperrt
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	mehr als {MAX_CSV_ROWS} Datensätze: „Datensätze importieren“ liest höchstens {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	mehr als {MAX_CSV_COLS} Variablen: „Datensätze importieren“ liest höchstens {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	die Variablen, die kein Text sind, wurden ausgelassen: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` und `options.{key}: {inner}` widersprechen sich: Option nur einmal angeben
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	Dateien der Version {0} können nicht komprimiert werden: Erst Version {COMPRESSED_SINCE} und neuer öffnen komprimierte Dateien

crates/ui-egui/src/i18n/el.tsv

@@ -4428,6 +4428,8 @@ digits	Malayalam	Μαλαγιάλαμ
 @msg	unknown workspace (one of {_1})	άγνωστος χώρος εργασίας (ένας από τους {_1})
 @msg	unsupported: {0}	δεν υποστηρίζεται: {0}
 @msg	variables are locked	οι μεταβλητές είναι κλειδωμένες
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	περισσότερα από {MAX_CSV_ROWS} σύνολα δεδομένων: η Εισαγωγή συνόλων δεδομένων διαβάζει έως {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	περισσότερες από {MAX_CSV_COLS} μεταβλητές: η Εισαγωγή συνόλων δεδομένων διαβάζει έως {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	οι μεταβλητές που δεν είναι κειμένου παραλείφθηκαν: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	τα `{key}: {top}` και `options.{key}: {inner}` διαφέρουν: δώστε την επιλογή μόνο μία φορά
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	τα αρχεία έκδοσης {0} δεν μπορούν να συμπιεστούν: μόνο η έκδοση {COMPRESSED_SINCE} και νεότερες ανοίγουν συμπιεσμένα αρχεία

crates/ui-egui/src/i18n/es.tsv

@@ -4480,6 +4480,8 @@ axis	Both	Ambos
 @msg	unknown workspace (one of {_1})	espacio de trabajo desconocido (uno de estos: {_1})
 @msg	unsupported: {0}	no compatible: {0}
 @msg	variables are locked	las variables están bloqueadas
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	más de {MAX_CSV_ROWS} conjuntos de datos: Importar conjuntos de datos lee como máximo {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	más de {MAX_CSV_COLS} variables: Importar conjuntos de datos lee como máximo {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	se omitieron las variables que no son de texto: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` y `options.{key}: {inner}` no coinciden: indique la opción una sola vez
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	los archivos de la versión {0} no se pueden comprimir: solo la versión {COMPRESSED_SINCE} y posteriores abren archivos comprimidos

crates/ui-egui/src/i18n/fi.tsv

@@ -4688,6 +4688,8 @@ imageTrace	Outline	Ääriviiva
 @msg	unknown workspace (one of {_1})	tuntematon työtila (jokin seuraavista: {_1})
 @msg	unsupported: {0}	ei tuettu: {0}
 @msg	variables are locked	muuttujat on lukittu
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	yli {MAX_CSV_ROWS} tietojoukkoa: Tuo tietojoukot lukee enintään {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	yli {MAX_CSV_COLS} muuttujaa: Tuo tietojoukot lukee enintään {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	muut kuin tekstimuuttujat jätettiin pois: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` ja `options.{key}: {inner}` ovat ristiriidassa: anna asetus vain kerran
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	version {0} tiedostoja ei voi pakata: pakattuja tiedostoja voi avata vain versiosta {COMPRESSED_SINCE} alkaen

crates/ui-egui/src/i18n/fr.tsv

@@ -4470,6 +4470,8 @@ axis	Both	Les deux
 @msg	unknown workspace (one of {_1})	espace de travail inconnu (valeurs possibles : {_1})
 @msg	unsupported: {0}	non pris en charge : {0}
 @msg	variables are locked	les variables sont verrouillées
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	plus de {MAX_CSV_ROWS} jeux de données : Importer des jeux de données en lit au plus {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	plus de {MAX_CSV_COLS} variables : Importer des jeux de données en lit au plus {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	les variables qui ne sont pas du texte ({kinds}) ont été ignorées
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` et `options.{key}: {inner}` ne concordent pas. Indiquez l’option une seule fois
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	les fichiers de version {0} ne peuvent pas être compressés : seules les versions {COMPRESSED_SINCE} et ultérieures ouvrent les fichiers compressés

crates/ui-egui/src/i18n/hu.tsv

@@ -5250,6 +5250,8 @@ imageTrace	Outline	Körvonal
 @msg	unsupported native docking operation	nem támogatott natív dokkolási művelet
 @msg	unsupported: {0}	nem támogatott: {0}
 @msg	variables are locked	a változók zárolva vannak
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	több mint {MAX_CSV_ROWS} adatkészlet: az Adatkészletek importálása legfeljebb {MAX_CSV_ROWS} adatkészletet olvas be
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	több mint {MAX_CSV_COLS} változó: az Adatkészletek importálása legfeljebb {MAX_CSV_COLS} változót olvas be
 @msg	variables that aren't text were left out: {kinds}	a nem szöveges változók kimaradtak: {kinds}
 @msg	VectorCraft doesn't search other apps' or the system's folders: {path}	a VectorCraft nem keres más alkalmazások és a rendszer mappáiban: {path}
 @msg	VectorCraft doesn't search the Shared or Public folder in Users: {path}	a VectorCraft nem keres a Users alatti Shared és Public mappában: {path}

crates/ui-egui/src/i18n/it.tsv

@@ -4521,6 +4521,8 @@ axis	Both	Entrambi
 @msg	unknown workspace (one of {_1})	area di lavoro sconosciuta (una delle seguenti: {_1})
 @msg	unsupported: {0}	non supportato: {0}
 @msg	variables are locked	le variabili sono bloccate
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	più di {MAX_CSV_ROWS} set di dati: Importa set di dati ne legge al massimo {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	più di {MAX_CSV_COLS} variabili: Importa set di dati ne legge al massimo {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	le variabili che non sono di testo sono state escluse: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` e `options.{key}: {inner}` non coincidono: indicare l'opzione una sola volta
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	i file della versione {0} non possono essere compressi: solo la versione {COMPRESSED_SINCE} e successive aprono file compressi

crates/ui-egui/src/i18n/ja.tsv

@@ -4076,6 +4076,8 @@ swatch	Bright Violet	ビビッドバイオレット
 @msg	Make Guides: select paths	ガイドを作成: パスを選択してください
 @msg	Release Guides: no guides	ガイドを解除: ガイドがありません
 @msg	variables are locked	変数がロックされています
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	データセットが {MAX_CSV_ROWS} 個を超えています: 「データセットを読み込み」が読み込めるのは {MAX_CSV_ROWS} 個までです
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	変数が {MAX_CSV_COLS} 個を超えています: 「データセットを読み込み」が読み込めるのは {MAX_CSV_COLS} 個までです
 @msg	variables that aren't text were left out: {kinds}	テキスト以外の変数は除外されました: {kinds}
 @msg	guides are locked	ガイドがロックされています
 @msg	handle must be in or out	handle には in または out を指定してください

crates/ui-egui/src/i18n/ka.tsv

@@ -5417,6 +5417,8 @@ imageTrace	Outline	კონტური
 @msg	too many changed shortcuts	ზედმეტად ბევრი შეცვლილი მალსახმობი
 @msg	too many library panels were opened in this session	ამ სესიაში ზედმეტად ბევრი ბიბლიოთეკის პანელი გაიხსნა
 @msg	variables are locked	ცვლადები ჩაკეტილია
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	{MAX_CSV_ROWS}-ზე მეტი მონაცემთა ნაკრები: მონაცემთა ნაკრებების იმპორტი კითხულობს მაქსიმუმ {MAX_CSV_ROWS}-ს
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	{MAX_CSV_COLS}-ზე მეტი ცვლადი: მონაცემთა ნაკრებების იმპორტი კითხულობს მაქსიმუმ {MAX_CSV_COLS}-ს
 @msg	variables that aren't text were left out: {kinds}	ცვლადები, რომლებიც ტექსტი არ არის, გამოტოვებულია: {kinds}
 @msg	x and y must be finite	x და y სასრული უნდა იყოს
 @msg	{id} opens another app: only the person at the keyboard can run it	{id} სხვა აპს ხსნის: მისი გაშვება მხოლოდ კლავიატურასთან მყოფ ადამიანს შეუძლია

crates/ui-egui/src/i18n/ko.tsv

@@ -4003,6 +4003,8 @@ theme	Appearance	외관
 @msg	Make Guides: select paths	안내선 만들기: 패스를 선택하세요
 @msg	Release Guides: no guides	안내선 해제: 안내선이 없습니다
 @msg	variables are locked	변수가 잠겨 있습니다
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	데이터 세트가 {MAX_CSV_ROWS}개보다 많습니다: 데이터 세트 가져오기는 최대 {MAX_CSV_ROWS}개를 읽습니다
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	변수가 {MAX_CSV_COLS}개보다 많습니다: 데이터 세트 가져오기는 최대 {MAX_CSV_COLS}개를 읽습니다
 @msg	variables that aren't text were left out: {kinds}	텍스트가 아닌 변수는 제외되었습니다: {kinds}
 @msg	guides are locked	안내선이 잠겨 있습니다
 @msg	handle must be in or out	handle은 in 또는 out이어야 합니다

crates/ui-egui/src/i18n/pl.tsv

@@ -4612,6 +4612,8 @@ imageTrace	Outline	Kontur
 @msg	unknown workspace (one of {_1})	nieznany obszar roboczy (jeden z: {_1})
 @msg	unsupported: {0}	nieobsługiwane: {0}
 @msg	variables are locked	zmienne są zablokowane
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	więcej niż {MAX_CSV_ROWS} zestawów danych: Importuj zestawy danych odczytuje najwyżej {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	więcej niż {MAX_CSV_COLS} zmiennych: Importuj zestawy danych odczytuje najwyżej {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	pominięto zmienne, które nie są tekstowe: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` i `options.{key}: {inner}` są sprzeczne: podaj opcję tylko raz
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	plików w wersji {0} nie można kompresować: skompresowane pliki otwierają tylko wersje {COMPRESSED_SINCE} i nowsze

crates/ui-egui/src/i18n/pt-br.tsv

@@ -4052,6 +4052,8 @@ axis	Both	Ambos
 @msg	unknown workspace (one of {_1})	espaço de trabalho desconhecido (um de {_1})
 @msg	unsupported: {0}	não suportado: {0}
 @msg	variables are locked	as variáveis estão bloqueadas
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	mais de {MAX_CSV_ROWS} conjuntos de dados: Importar Conjuntos de Dados lê no máximo {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	mais de {MAX_CSV_COLS} variáveis: Importar Conjuntos de Dados lê no máximo {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	as variáveis que não são de texto foram omitidas: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` e `options.{key}: {inner}` não coincidem: informe a opção uma só vez
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	arquivos da versão {0} não podem ser compactados: somente a versão {COMPRESSED_SINCE} e posteriores abrem arquivos compactados

crates/ui-egui/src/i18n/ru.tsv

@@ -4516,6 +4516,8 @@ axis	Both	Оба
 @msg	unknown workspace (one of {_1})	неизвестная рабочая среда (одна из: {_1})
 @msg	unsupported: {0}	не поддерживается: {0}
 @msg	variables are locked	переменные заблокированы
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	больше {MAX_CSV_ROWS} наборов данных: «Импортировать наборы данных» читает не более {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	больше {MAX_CSV_COLS} переменных: «Импортировать наборы данных» читает не более {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	переменные, которые не являются текстовыми, пропущены: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` и `options.{key}: {inner}` противоречат друг другу: укажите параметр только один раз
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	файлы версии {0} не могут быть сжаты: только версия {COMPRESSED_SINCE} и новее открывают сжатые файлы

crates/ui-egui/src/i18n/sv.tsv

@@ -4379,6 +4379,8 @@ axis	Both	Båda
 @msg	unknown workspace (one of {_1})	okänd arbetslayout (en av {_1})
 @msg	unsupported: {0}	stöds inte: {0}
 @msg	variables are locked	variablerna är låsta
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	fler än {MAX_CSV_ROWS} datauppsättningar: Importera datauppsättningar läser högst {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	fler än {MAX_CSV_COLS} variabler: Importera datauppsättningar läser högst {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	variabler som inte är text utelämnades: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` och `options.{key}: {inner}` stämmer inte överens: ange alternativet bara en gång
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	filer i version {0} kan inte komprimeras: endast version {COMPRESSED_SINCE} och senare kan öppna komprimerade filer

crates/ui-egui/src/i18n/tests.rs

@@ -1736,6 +1736,39 @@ fn saved_tracing_preset_errors_are_translated() {
     }
 }
 
+/// Export Data Sets' refusals of more data sets or variables than Import Data Sets reads are
+/// translated in every language that translates every message.
+#[test]
+fn dataset_export_limit_errors_are_translated() {
+    use serde_json::json;
+    use vectorcraft_engine::{EngineError, Session};
+    let mut s = Session::new();
+    s.execute("file.new", &json!({})).unwrap();
+    let rows: String = (1..=1000).map(|i| format!("Set {i},x\n")).collect();
+    s.execute("dataset.import", &json!({"csv": format!("name,V1\n{rows}")})).unwrap();
+    s.execute("dataset.new", &json!({"name": "Set 1001"})).unwrap();
+    let mut errors = vec![];
+    let e = s.execute("dataset.export", &json!({})).unwrap_err();
+    let want = "more than 1000 data sets: Import Data Sets reads at most 1000";
+    assert!(matches!(&e, EngineError::BadParams { msg, .. } if msg == want), "{e}");
+    errors.push((e.to_string(), want));
+    s.execute("dataset.delete", &json!({"names": ["Set 1001"]})).unwrap();
+    for i in 2..=257 {
+        s.execute("variable.define", &json!({"name": format!("V{i}"), "kind": "text"})).unwrap();
+    }
+    let e = s.execute("dataset.export", &json!({})).unwrap_err();
+    let want = "more than 256 variables: Import Data Sets reads at most 256";
+    assert!(matches!(&e, EngineError::BadParams { msg, .. } if msg == want), "{e}");
+    errors.push((e.to_string(), want));
+    for code in COMPLETE_MESSAGES {
+        let lang = Lang::from_code(code).expect("registered");
+        for (e, want) in &errors {
+            let shown = message(lang, e);
+            assert!(!shown.contains(want), "{code}: {shown}");
+        }
+    }
+}
+
 /// The status bar's line for an EPS file whose PostScript stops on an error, opened partly or
 /// refused, and the refusal's dialog keep the error's name as PostScript spells it and its meaning,
 /// which each language shows as its catalog translates the meaning.

crates/ui-egui/src/i18n/tr.tsv

@@ -5334,6 +5334,8 @@ theme	Appearance	Görünüm
 @msg	the spine has no segments	omurganın segmenti yok
 @msg	too many library panels were opened in this session	bu oturumda çok fazla kütüphane paneli açıldı
 @msg	variables are locked	değişkenler kilitli
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	{MAX_CSV_ROWS} veri setinden fazla: Veri Kümelerini İçe Aktar en fazla {MAX_CSV_ROWS} tane okur
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	{MAX_CSV_COLS} değişkenden fazla: Veri Kümelerini İçe Aktar en fazla {MAX_CSV_COLS} tane okur
 @msg	x and y must be finite	x ve y sonlu olmalıdır
 @msg	aiVersion 7 writes legacy .ai files; a .ait template is always PDF-compatible	aiVersion 7 eski .ai dosyalarını yazar; bir .ait şablonu her zaman PDF uyumludur
 @msg	Edit Original opens image and document files only; “{name}” is not one	Özgünü Düzenle yalnızca görüntü ve belge dosyalarını açar; “{name}” bunlardan biri değil

crates/ui-egui/src/i18n/uk.tsv

@@ -4505,6 +4505,8 @@ axis	Both	Обидві
 @msg	unknown workspace (one of {_1})	невідоме робоче середовище (одна з: {_1})
 @msg	unsupported: {0}	не підтримується: {0}
 @msg	variables are locked	змінні заблоковані
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	більше ніж {MAX_CSV_ROWS} наборів даних: «Імпортувати набори даних» читає не більше {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	більше ніж {MAX_CSV_COLS} змінних: «Імпортувати набори даних» читає не більше {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	змінні, що не є текстовими, пропущено: {kinds}
 @msg	`{key}: {top}` and `options.{key}: {inner}` disagree: give the option once	`{key}: {top}` і `options.{key}: {inner}` суперечать одне одному: вкажіть параметр лише один раз
 @msg	version {0} files can't be compressed: only version {COMPRESSED_SINCE} and later open compressed files	файли версії {0} не можуть бути стиснуті: тільки версія {COMPRESSED_SINCE} і новіші відкривають стислі файли

crates/ui-egui/src/i18n/vi.tsv

@@ -4912,6 +4912,8 @@ theme	Appearance	Giao diện
 @msg	unsupported native docking operation	thao tác neo gốc không được hỗ trợ
 @msg	unsupported: {0}	không được hỗ trợ: {0}
 @msg	variables are locked	biến số bị khóa
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	hơn {MAX_CSV_ROWS} tập dữ liệu: Nhập tập dữ liệu chỉ đọc tối đa {MAX_CSV_ROWS}
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	hơn {MAX_CSV_COLS} biến số: Nhập tập dữ liệu chỉ đọc tối đa {MAX_CSV_COLS}
 @msg	variables that aren't text were left out: {kinds}	các biến số không phải văn bản đã bị bỏ qua: {kinds}
 @msg	VectorCraft doesn't search other apps' or the system's folders: {path}	VectorCraft không tìm kiếm trong thư mục của ứng dụng khác hoặc hệ thống: {path}
 @msg	VectorCraft doesn't search the Shared or Public folder in Users: {path}	VectorCraft không tìm kiếm thư mục Shared hoặc Public trong Users: {path}

crates/ui-egui/src/i18n/zh-hans.tsv

@@ -3471,6 +3471,8 @@ digits	Malayalam	马拉雅拉姆数字
 	Lock Variables	锁定变量
 	Unlock Variables	解锁变量
 @msg	variables are locked	变量已锁定
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	数据集超过 {MAX_CSV_ROWS} 个：“导入数据集”最多读取 {MAX_CSV_ROWS} 个
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	变量超过 {MAX_CSV_COLS} 个：“导入数据集”最多读取 {MAX_CSV_COLS} 个
 @msg	variables that aren't text were left out: {kinds}	已省略非文本变量：{kinds}
 	List Variables	列出变量
 	Bind Variable	绑定变量

crates/ui-egui/src/i18n/zh-hant.tsv

@@ -4459,6 +4459,8 @@ digits	Malayalam	馬來亞拉姆數字
 	Lock Variables	鎖定變數
 	Unlock Variables	解除鎖定變數
 @msg	variables are locked	變數已鎖定
+@msg	more than {MAX_CSV_ROWS} data sets: Import Data Sets reads at most {MAX_CSV_ROWS}	資料集超過 {MAX_CSV_ROWS} 個：「匯入資料集」最多讀取 {MAX_CSV_ROWS} 個
+@msg	more than {MAX_CSV_COLS} variables: Import Data Sets reads at most {MAX_CSV_COLS}	變數超過 {MAX_CSV_COLS} 個：「匯入資料集」最多讀取 {MAX_CSV_COLS} 個
 @msg	variables that aren't text were left out: {kinds}	已略過非文字變數：{kinds}
 	List Variables	列出變數
 	Bind Variable	綁定變數