From 8987d42c19eb92c92adde93f599181005bc16ecf Mon Sep 17 00:00:00 2001
From: dotCooCoo <RobertLeeLW@gmail.com>
Date: Thu, 12 Nov 2026 20:33:16 -0800
Subject: [PATCH] i18n: messages with escaped JSON braces match their catalog
 rows

Catalog rows now read `{{` and `}}` as a literal `{` and `}`, in the
English source and in the translation, as in a Rust format string. A `{`
with no `}` after it is literal text instead of dropping the row.

- The plugin.run errors for an importer, an exporter and a live effect
  (`document.open {"importer": ...}` and the like) now show translated
  with the plug-in's id and JSON kept, in the 22 catalogs that list them.
  Their rows were keyed as `{{"importer"}"}}`, which never matched.
- The test that keys a format string keeps `{{`/`}}` and numbers only real
  placeholders, so its expected keys match the runtime text. Two junk
  rows it produced for the RTF error (hi, sv) are removed.
---
 crates/ui-egui/src/i18n.rs          | 14 ++++-
 crates/ui-egui/src/i18n/ca.tsv      |  4 +-
 crates/ui-egui/src/i18n/catalog.rs  | 41 +++++++++++---
 crates/ui-egui/src/i18n/cs.tsv      |  4 +-
 crates/ui-egui/src/i18n/de.tsv      |  4 +-
 crates/ui-egui/src/i18n/el.tsv      |  4 +-
 crates/ui-egui/src/i18n/es.tsv      |  4 +-
 crates/ui-egui/src/i18n/fi.tsv      |  4 +-
 crates/ui-egui/src/i18n/fr.tsv      |  4 +-
 crates/ui-egui/src/i18n/hi.tsv      |  7 +--
 crates/ui-egui/src/i18n/hu.tsv      |  4 +-
 crates/ui-egui/src/i18n/it.tsv      |  4 +-
 crates/ui-egui/src/i18n/ja.tsv      |  4 +-
 crates/ui-egui/src/i18n/ka.tsv      |  4 +-
 crates/ui-egui/src/i18n/ko.tsv      |  4 +-
 crates/ui-egui/src/i18n/pl.tsv      |  4 +-
 crates/ui-egui/src/i18n/pt-br.tsv   |  4 +-
 crates/ui-egui/src/i18n/ru.tsv      |  4 +-
 crates/ui-egui/src/i18n/sv.tsv      |  7 +--
 crates/ui-egui/src/i18n/tests.rs    | 88 ++++++++++++++++++++++++++++-
 crates/ui-egui/src/i18n/tr.tsv      |  4 +-
 crates/ui-egui/src/i18n/uk.tsv      |  4 +-
 crates/ui-egui/src/i18n/vi.tsv      |  4 +-
 crates/ui-egui/src/i18n/zh-hans.tsv |  4 +-
 crates/ui-egui/src/i18n/zh-hant.tsv |  4 +-
 25 files changed, 196 insertions(+), 41 deletions(-)

diff --git a/crates/ui-egui/src/i18n.rs b/crates/ui-egui/src/i18n.rs
index 7ee09ee14e..eeb87a3318 100644
--- a/crates/ui-egui/src/i18n.rs
+++ b/crates/ui-egui/src/i18n.rs
@@ -677,13 +677,23 @@ fn message_at(lang: Lang, s: &str, depth: usize) -> String {
 }
 
 /// Fill `{name}` placeholders in one pass: a value that holds `{name}` text stays as it is.
-/// Unknown placeholders are left as written.
+/// Unknown placeholders are left as written. `{{` and `}}` are a literal `{` and `}`.
 fn fill_once(template: &str, args: &[(&str, &str)]) -> String {
     let mut rest = template;
     let mut out = String::with_capacity(rest.len());
-    while let Some(open) = rest.find('{') {
+    while let Some(open) = rest.find(['{', '}']) {
         out.push_str(&rest[..open]);
         let after = &rest[open + 1..];
+        if rest[open..].starts_with('}') {
+            out.push('}');
+            rest = after.strip_prefix('}').unwrap_or(after);
+            continue;
+        }
+        if let Some(escaped) = after.strip_prefix('{') {
+            out.push('{');
+            rest = escaped;
+            continue;
+        }
         let filled = after.find('}').and_then(|close| args.iter().find(|(k, _)| *k == &after[..close]).map(|(_, v)| (*v, close)));
         match filled {
             Some((value, close)) => {
diff --git a/crates/ui-egui/src/i18n/ca.tsv b/crates/ui-egui/src/i18n/ca.tsv
index 0399e6c04a..4e17e5bc34 100644
--- a/crates/ui-egui/src/i18n/ca.tsv
+++ b/crates/ui-egui/src/i18n/ca.tsv
@@ -7135,7 +7135,9 @@ breakText	Glyphs	Glifs
 @msg	“{shown}” opens {_1} files, not `{_2}`	«{shown}» obre fitxers {_1}, no `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` és un complement del tipus `{_2}`, no un importador
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` és un complement del tipus `{_2}`, no un exportador
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` és un importador: obriu un fitxer amb document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` és un importador: obriu un fitxer amb document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` és un exportador: exporteu amb document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` és un efecte dinàmic: apliqueu-lo amb effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	l’importador no ha retornat cap objecte
 @msg	an importer returns `objects` and `warnings`, not `{key}`	un importador retorna `objects` i `warnings`, no `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	el fitxer supera els {MAX_INPUT_BYTES} bytes que llegeix un importador
diff --git a/crates/ui-egui/src/i18n/catalog.rs b/crates/ui-egui/src/i18n/catalog.rs
index 138299643d..ac659ac4b2 100644
--- a/crates/ui-egui/src/i18n/catalog.rs
+++ b/crates/ui-egui/src/i18n/catalog.rs
@@ -47,23 +47,42 @@ const MAX_MESSAGE_LEN: usize = 2000;
 
 impl Template {
     /// `None` for a template that can't be matched reliably: no literal text, or two placeholders
-    /// in a row (where one ends and the next begins is unknowable).
+    /// in a row (where one ends and the next begins is unknowable). `{{` and `}}` are a literal `{`
+    /// and `}`, as in a Rust format string, and so is a `{` with no `}` after it.
     fn parse(source: &str, forms: Vec<String>, counted: bool) -> Option<Template> {
         let mut pieces = Vec::new();
+        let mut text = String::new();
         let mut rest = source;
-        while let Some(a) = rest.find('{') {
+        while let Some(a) = rest.find(['{', '}']) {
+            text.push_str(rest.get(..a)?);
             let after = rest.get(a + 1..)?;
-            let b = after.find('}')?;
-            if a > 0 {
-                pieces.push(Piece::Text(rest.get(..a)?.to_string()));
+            let brace = if rest.get(a..)?.starts_with('{') { '{' } else { '}' };
+            if let Some(escaped) = after.strip_prefix(brace) {
+                text.push(brace);
+                rest = escaped;
+                continue;
+            }
+            if brace == '}' {
+                text.push('}');
+                rest = after;
+                continue;
+            }
+            let Some(b) = after.find('}') else {
+                text.push('{');
+                rest = after;
+                continue;
+            };
+            if !text.is_empty() {
+                pieces.push(Piece::Text(std::mem::take(&mut text)));
             } else if matches!(pieces.last(), Some(Piece::Hole(_))) {
                 return None;
             }
             pieces.push(Piece::Hole(after.get(..b)?.to_string()));
             rest = after.get(b + 1..)?;
         }
-        if !rest.is_empty() {
-            pieces.push(Piece::Text(rest.to_string()));
+        text.push_str(rest);
+        if !text.is_empty() {
+            pieces.push(Piece::Text(text));
         }
         let literal = pieces.iter().map(|p| if let Piece::Text(t) = p { t.len() } else { 0 }).sum();
         (literal > 0).then_some(Template { pieces, literal, forms, counted })
@@ -175,7 +194,7 @@ impl Catalog {
                     c.plurals.insert(src, tr.split('|').map(str::to_string).collect());
                 }
                 "@msg" => {
-                    if src.contains('{') {
+                    if src.contains('{') || src.contains("}}") {
                         c.templates.extend(Template::parse(&src, vec![tr], false));
                     } else {
                         c.messages.insert(src, tr);
@@ -237,13 +256,17 @@ impl Catalog {
     }
 }
 
-/// `{name}` placeholders of a template, in order of appearance.
+/// `{name}` placeholders of a template, in order of appearance; `{{` is a literal brace.
 #[cfg(test)]
 pub fn placeholders(s: &str) -> Vec<&str> {
     let mut out = Vec::new();
     let mut rest = s;
     while let Some(a) = rest.find('{') {
         let after = &rest[a + 1..];
+        if let Some(escaped) = after.strip_prefix('{') {
+            rest = escaped;
+            continue;
+        }
         match after.find('}') {
             Some(b) => {
                 out.push(&after[..b]);
diff --git a/crates/ui-egui/src/i18n/cs.tsv b/crates/ui-egui/src/i18n/cs.tsv
index e62070329c..68d2e7f5f6 100644
--- a/crates/ui-egui/src/i18n/cs.tsv
+++ b/crates/ui-egui/src/i18n/cs.tsv
@@ -7154,7 +7154,9 @@ breakText	Glyphs	Glyfy
 @msg	“{shown}” opens {_1} files, not `{_2}`	„{shown}“ otevírá soubory {_1}, ne `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` je zásuvný modul druhu `{_2}`, ne importní zásuvný modul
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` je zásuvný modul druhu `{_2}`, ne exportní zásuvný modul
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` je importní zásuvný modul: otevřete soubor pomocí document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` je importní zásuvný modul: otevřete soubor pomocí document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` je exportní zásuvný modul: exportujte pomocí document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` je živý efekt: použijte ho pomocí effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	importní zásuvný modul nevrátil žádné objekty
 @msg	an importer returns `objects` and `warnings`, not `{key}`	importní zásuvný modul vrací `objects` a `warnings`, ne `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	soubor je větší než {MAX_INPUT_BYTES} bajtů, které importní zásuvný modul čte
diff --git a/crates/ui-egui/src/i18n/de.tsv b/crates/ui-egui/src/i18n/de.tsv
index af4489a637..2373b95b3d 100644
--- a/crates/ui-egui/src/i18n/de.tsv
+++ b/crates/ui-egui/src/i18n/de.tsv
@@ -6749,7 +6749,9 @@ breakText	Glyphs	Glyphen
 @msg	“{shown}” opens {_1} files, not `{_2}`	„{shown}“ öffnet {_1}-Dateien, nicht `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` ist ein Plug-in der Art `{_2}`, kein Import-Plug-in
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` ist ein Plug-in der Art `{_2}`, kein Export-Plug-in
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` ist ein Import-Plug-in: Öffnen Sie eine Datei mit document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` ist ein Import-Plug-in: Öffnen Sie eine Datei mit document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` ist ein Export-Plug-in: Exportieren Sie mit document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` ist ein Live-Effekt: Wenden Sie ihn mit effect.apply {{"effect": "{_2}"}} an
 @msg	the importer returned no objects	das Import-Plug-in hat keine Objekte zurückgegeben
 @msg	an importer returns `objects` and `warnings`, not `{key}`	ein Import-Plug-in gibt `objects` und `warnings` zurück, nicht `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	die Datei ist größer als die {MAX_INPUT_BYTES} Byte, die ein Import-Plug-in liest
diff --git a/crates/ui-egui/src/i18n/el.tsv b/crates/ui-egui/src/i18n/el.tsv
index 6ad6ff11c0..763ac413c4 100644
--- a/crates/ui-egui/src/i18n/el.tsv
+++ b/crates/ui-egui/src/i18n/el.tsv
@@ -7106,7 +7106,9 @@ breakText	Glyphs	Γλύφοι
 @msg	“{shown}” opens {_1} files, not `{_2}`	το «{shown}» ανοίγει αρχεία {_1}, όχι `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	το `{_1}` είναι πρόσθετο τύπου `{_2}`, όχι πρόσθετο εισαγωγής
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	το `{_1}` είναι πρόσθετο τύπου `{_2}`, όχι πρόσθετο εξαγωγής
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	το `{_1}` είναι πρόσθετο εισαγωγής: ανοίξτε ένα αρχείο με document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	το `{_1}` είναι πρόσθετο εισαγωγής: ανοίξτε ένα αρχείο με document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	το `{_1}` είναι πρόσθετο εξαγωγής: κάντε εξαγωγή με document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	το `{_1}` είναι δυναμικό εφέ: εφαρμόστε το με effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	το πρόσθετο εισαγωγής δεν επέστρεψε κανένα αντικείμενο
 @msg	an importer returns `objects` and `warnings`, not `{key}`	ένα πρόσθετο εισαγωγής επιστρέφει `objects` και `warnings`, όχι `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	το αρχείο είναι μεγαλύτερο από τα {MAX_INPUT_BYTES} byte που διαβάζει ένα πρόσθετο εισαγωγής
diff --git a/crates/ui-egui/src/i18n/es.tsv b/crates/ui-egui/src/i18n/es.tsv
index 41f92e14f7..6c9d33a851 100644
--- a/crates/ui-egui/src/i18n/es.tsv
+++ b/crates/ui-egui/src/i18n/es.tsv
@@ -7097,7 +7097,9 @@ breakText	Glyphs	Glifos
 @msg	“{shown}” opens {_1} files, not `{_2}`	«{shown}» abre archivos {_1}, no `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` es un plugin de tipo `{_2}`, no un plugin de importación
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` es un plugin de tipo `{_2}`, no un plugin de exportación
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` es un plugin de importación: abra un archivo con document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` es un plugin de importación: abra un archivo con document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` es un plugin de exportación: exporte con document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` es un efecto interactivo: aplíquelo con effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	el plugin de importación no devolvió ningún objeto
 @msg	an importer returns `objects` and `warnings`, not `{key}`	un plugin de importación devuelve `objects` y `warnings`, no `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	el archivo supera los {MAX_INPUT_BYTES} bytes que lee un plugin de importación
diff --git a/crates/ui-egui/src/i18n/fi.tsv b/crates/ui-egui/src/i18n/fi.tsv
index fd38382f63..0bcd4f82c2 100644
--- a/crates/ui-egui/src/i18n/fi.tsv
+++ b/crates/ui-egui/src/i18n/fi.tsv
@@ -7189,7 +7189,9 @@ breakText	Glyphs	Merkit
 @msg	“{shown}” opens {_1} files, not `{_2}`	”{shown}” avaa {_1}-tiedostoja, ei `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` on lajin `{_2}` laajennus, ei tuontilaajennus
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` on lajin `{_2}` laajennus, ei vientilaajennus
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` on tuontilaajennus: avaa tiedosto komennolla document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` on tuontilaajennus: avaa tiedosto komennolla document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` on vientilaajennus: vie komennolla document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` on live-tehoste: käytä sitä komennolla effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	tuontilaajennus ei palauttanut objekteja
 @msg	an importer returns `objects` and `warnings`, not `{key}`	tuontilaajennus palauttaa `objects` ja `warnings`, ei `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	tiedosto on suurempi kuin tuontilaajennuksen lukemat {MAX_INPUT_BYTES} tavua
diff --git a/crates/ui-egui/src/i18n/fr.tsv b/crates/ui-egui/src/i18n/fr.tsv
index dcbe436fc3..d8d626b8a7 100644
--- a/crates/ui-egui/src/i18n/fr.tsv
+++ b/crates/ui-egui/src/i18n/fr.tsv
@@ -7149,7 +7149,9 @@ breakText	Glyphs	Glyphes
 @msg	“{shown}” opens {_1} files, not `{_2}`	« {shown} » ouvre les fichiers {_1}, pas `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` est un module externe de type `{_2}`, pas un module externe d’importation
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` est un module externe de type `{_2}`, pas un module externe d’exportation
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` est un module externe d’importation : ouvrez un fichier avec document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` est un module externe d’importation : ouvrez un fichier avec document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` est un module externe d’exportation : exportez avec document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` est un effet dynamique : appliquez-le avec effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	le module externe d’importation n’a renvoyé aucun objet
 @msg	an importer returns `objects` and `warnings`, not `{key}`	un module externe d’importation renvoie `objects` et `warnings`, pas `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	le fichier dépasse les {MAX_INPUT_BYTES} octets qu’un module externe d’importation lit
diff --git a/crates/ui-egui/src/i18n/hi.tsv b/crates/ui-egui/src/i18n/hi.tsv
index 9b7a15bbad..bd03cdd7a8 100644
--- a/crates/ui-egui/src/i18n/hi.tsv
+++ b/crates/ui-egui/src/i18n/hi.tsv
@@ -5754,8 +5754,8 @@ antiAlias	Sharp	शार्प
 @msg	`{_1}` has no brushes to apply	`{_1}` को लागू करने के लिए कोई ब्रश नहीं है
 @msg	`{_1}` has no symbols to place	`{_1}` के पास कोई सिंबल नहीं है
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` `{_2}` प्रकार का प्लग-इन है, निर्यातक नहीं
-@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect"}"}}	`{_1}` एक लाइव इफ़ेक्ट है: इसे effect.apply {{"effect"}"}} के साथ लागू करें
-@msg	`{_1}` is an exporter: export with document.export {{"format"}"}}	`{_1}` एक एक्सपोर्टर है: document.export {{"format"}"}} से एक्सपोर्ट करें
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` एक लाइव इफ़ेक्ट है: इसे effect.apply {{"effect": "{_2}"}} के साथ लागू करें
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` एक एक्सपोर्टर है: document.export {{"format": "{_2}"}} से एक्सपोर्ट करें
 @msg	`{_1}` is built in and always listed	`{_1}` बनाया गया है और हमेशा सूचीबद्ध है
 @msg	`{_1}` is no save command	`{_1}` कोई बचत आदेश नहीं है
 @msg	`{_1}` is not a font file the last text.findFontFiles search found	`{_1}` पिछली text.findFontFiles सर्च में मिली फ़ॉन्ट फ़ाइल नहीं है
@@ -7376,7 +7376,6 @@ antiAlias	Sharp	शार्प
 @msg	not an export presets file: {e}	एक निर्यात प्रीसेट फ़ाइल नहीं: {e}
 @msg	not an image VectorCraft reads (see document.formats)	यह ऐसी इमेज नहीं है जिसे VectorCraft पढ़ सके (document.formats देखें)
 @msg	not an RTF file: it doesn't start with {\\rtf	RTF फ़ाइल नहीं: यह {\rtf के साथ शुरू नहीं होता है
-@msg	not an RTF file: it doesn't start with not an RTF file: it doesn't start with {\rtf	RTF फ़ाइल: यह एक RTF फ़ाइल के साथ शुरू नहीं होता है: यह {\rtf के साथ शुरू नहीं होता है
 @msg	not area type (text in a frame) outside perspective	नहीं क्षेत्र के प्रकार (एक फ्रेम में टेक्स्ट) बाहर पर्सपेक्टिव
 @msg	not editing an opacity mask	एक opacity मास्क संपादित न करें
 @msg	not found	नहीं मिला
@@ -8580,7 +8579,7 @@ theme	Appearance	अपीयरेंस
 @msg	`importer` must be a plug-in format id (see document.formats)	`importer` किसी प्लग-इन का फ़ॉर्मेट id होना चाहिए (document.formats देखें)
 @msg	“{shown}” opens {_1} files, not `{_2}`	“{shown}” {_1} फ़ाइलें खोलता है, `{_2}` नहीं
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` `{_2}` प्रकार का प्लग-इन है, इंपोर्टर नहीं
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` एक इंपोर्टर है: document.open {{"importer"}"}} से फ़ाइल खोलें
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` एक इंपोर्टर है: document.open {{"importer": "{_2}"}} से फ़ाइल खोलें
 @msg	the importer returned no objects	इंपोर्टर ने कोई ऑब्जेक्ट नहीं लौटाया
 @msg	an importer returns `objects` and `warnings`, not `{key}`	इंपोर्टर `objects` और `warnings` लौटाता है, `{key}` नहीं
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	फ़ाइल उन {MAX_INPUT_BYTES} बाइट्स से बड़ी है जो इंपोर्टर पढ़ता है
diff --git a/crates/ui-egui/src/i18n/hu.tsv b/crates/ui-egui/src/i18n/hu.tsv
index 6832a86707..dab6641456 100644
--- a/crates/ui-egui/src/i18n/hu.tsv
+++ b/crates/ui-egui/src/i18n/hu.tsv
@@ -7138,7 +7138,9 @@ breakText	Glyphs	Glifák
 @msg	“{shown}” opens {_1} files, not `{_2}`	„{shown}” {_1} fájlokat nyit meg, nem `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}`: `{_2}` fajtájú bővítmény, nem importáló bővítmény
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}`: `{_2}` fajtájú bővítmény, nem exportáló bővítmény
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` importáló bővítmény: nyisson meg egy fájlt a document.open {{"importer"}"}} paranccsal
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` importáló bővítmény: nyisson meg egy fájlt a document.open {{"importer": "{_2}"}} paranccsal
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` exportáló bővítmény: exportáljon a document.export {{"format": "{_2}"}} paranccsal
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` élő effektus: alkalmazza az effect.apply {{"effect": "{_2}"}} paranccsal
 @msg	the importer returned no objects	az importáló bővítmény nem adott vissza objektumot
 @msg	an importer returns `objects` and `warnings`, not `{key}`	az importáló bővítmény `objects` és `warnings` értéket ad vissza, nem `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	a fájl nagyobb annál a {MAX_INPUT_BYTES} bájtnál, amit egy importáló bővítmény beolvas
diff --git a/crates/ui-egui/src/i18n/it.tsv b/crates/ui-egui/src/i18n/it.tsv
index 57f141f880..cd0cb9604c 100644
--- a/crates/ui-egui/src/i18n/it.tsv
+++ b/crates/ui-egui/src/i18n/it.tsv
@@ -6783,7 +6783,9 @@ breakText	Glyphs	Glifi
 @msg	“{shown}” opens {_1} files, not `{_2}`	«{shown}» apre file {_1}, non `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` è un plug-in di tipo `{_2}`, non un plug-in di importazione
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` è un plug-in di tipo `{_2}`, non un plug-in di esportazione
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` è un plug-in di importazione: apri un file con document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` è un plug-in di importazione: apri un file con document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` è un plug-in di esportazione: esporta con document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` è un effetto dinamico: applicalo con effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	il plug-in di importazione non ha restituito alcun oggetto
 @msg	an importer returns `objects` and `warnings`, not `{key}`	un plug-in di importazione restituisce `objects` e `warnings`, non `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	il file supera i {MAX_INPUT_BYTES} byte che un plug-in di importazione legge
diff --git a/crates/ui-egui/src/i18n/ja.tsv b/crates/ui-egui/src/i18n/ja.tsv
index 69b55c9121..67ed40b5b2 100644
--- a/crates/ui-egui/src/i18n/ja.tsv
+++ b/crates/ui-egui/src/i18n/ja.tsv
@@ -6848,7 +6848,9 @@ breakText	Glyphs	字形
 @msg	“{shown}” opens {_1} files, not `{_2}`	「{shown}」が開くのは {_1} ファイルで、`{_2}` ではありません
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` は種類 `{_2}` のプラグインで、読み込みプラグインではありません
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` は種類 `{_2}` のプラグインで、書き出しプラグインではありません
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` は読み込みプラグインです: document.open {{"importer"}"}} でファイルを開いてください
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` は読み込みプラグインです: document.open {{"importer": "{_2}"}} でファイルを開いてください
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` は書き出しプラグインです: document.export {{"format": "{_2}"}} で書き出してください
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` はライブ効果です: effect.apply {{"effect": "{_2}"}} で適用してください
 @msg	the importer returned no objects	読み込みプラグインがオブジェクトを返しませんでした
 @msg	an importer returns `objects` and `warnings`, not `{key}`	読み込みプラグインが返すのは `objects` と `warnings` で、`{key}` ではありません
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	ファイルが読み込みプラグインの読み取る {MAX_INPUT_BYTES} バイトを超えています
diff --git a/crates/ui-egui/src/i18n/ka.tsv b/crates/ui-egui/src/i18n/ka.tsv
index 1cbb2d1bf1..c2727e9a71 100644
--- a/crates/ui-egui/src/i18n/ka.tsv
+++ b/crates/ui-egui/src/i18n/ka.tsv
@@ -7263,7 +7263,9 @@ font-script	Japanese	იაპონური
 @msg	“{shown}” opens {_1} files, not `{_2}`	„{shown}“ ხსნის {_1} ფაილებს და არა `{_2}`-ს
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` არის `{_2}` სახის პლაგინი და არა იმპორტის პლაგინი
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` არის `{_2}` სახის პლაგინი და არა ექსპორტის პლაგინი
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` იმპორტის პლაგინია: გახსენით ფაილი document.open {{"importer"}"}}-ით
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` იმპორტის პლაგინია: გახსენით ფაილი document.open {{"importer": "{_2}"}}-ით
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` ექსპორტის პლაგინია: მოახდინეთ ექსპორტი document.export {{"format": "{_2}"}}-ით
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` ცოცხალი ეფექტია: გამოიყენეთ ის effect.apply {{"effect": "{_2}"}}-ით
 @msg	the importer returned no objects	იმპორტის პლაგინმა ობიექტები არ დააბრუნა
 @msg	an importer returns `objects` and `warnings`, not `{key}`	იმპორტის პლაგინი აბრუნებს `objects`-ს და `warnings`-ს და არა `{key}`-ს
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	ფაილი აღემატება {MAX_INPUT_BYTES} ბაიტს, რომელსაც იმპორტის პლაგინი კითხულობს
diff --git a/crates/ui-egui/src/i18n/ko.tsv b/crates/ui-egui/src/i18n/ko.tsv
index 6135f8d5ec..073c59e992 100644
--- a/crates/ui-egui/src/i18n/ko.tsv
+++ b/crates/ui-egui/src/i18n/ko.tsv
@@ -6744,7 +6744,9 @@ breakText	Glyphs	글리프
 @msg	“{shown}” opens {_1} files, not `{_2}`	“{shown}”은(는) {_1} 파일을 엽니다. `{_2}`은(는) 열지 않습니다
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}`은(는) `{_2}` 종류의 플러그인이며 가져오기 플러그인이 아닙니다
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}`은(는) `{_2}` 종류의 플러그인이며 내보내기 플러그인이 아닙니다
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}`은(는) 가져오기 플러그인입니다: document.open {{"importer"}"}}로 파일을 여세요
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}`은(는) 가져오기 플러그인입니다: document.open {{"importer": "{_2}"}}로 파일을 여세요
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}`은(는) 내보내기 플러그인입니다: document.export {{"format": "{_2}"}}로 내보내세요
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}`은(는) 라이브 효과입니다: effect.apply {{"effect": "{_2}"}}로 적용하세요
 @msg	the importer returned no objects	가져오기 플러그인이 개체를 반환하지 않았습니다
 @msg	an importer returns `objects` and `warnings`, not `{key}`	가져오기 플러그인은 `{key}`가 아닌 `objects`와 `warnings`를 반환합니다
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	파일이 가져오기 플러그인이 읽는 {MAX_INPUT_BYTES}바이트보다 큽니다
diff --git a/crates/ui-egui/src/i18n/pl.tsv b/crates/ui-egui/src/i18n/pl.tsv
index f277d51d65..a52f8baef2 100644
--- a/crates/ui-egui/src/i18n/pl.tsv
+++ b/crates/ui-egui/src/i18n/pl.tsv
@@ -7010,7 +7010,9 @@ breakText	Glyphs	Glify
 @msg	“{shown}” opens {_1} files, not `{_2}`	„{shown}” otwiera pliki {_1}, a nie `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` to wtyczka rodzaju `{_2}`, a nie wtyczka importu
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` to wtyczka rodzaju `{_2}`, a nie wtyczka eksportu
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` to wtyczka importu: otwórz plik za pomocą document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` to wtyczka importu: otwórz plik za pomocą document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` to wtyczka eksportu: eksportuj za pomocą document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` to efekt na żywo: zastosuj go za pomocą effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	wtyczka importu nie zwróciła żadnych obiektów
 @msg	an importer returns `objects` and `warnings`, not `{key}`	wtyczka importu zwraca `objects` i `warnings`, a nie `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	plik jest większy niż {MAX_INPUT_BYTES} bajtów, które odczytuje wtyczka importu
diff --git a/crates/ui-egui/src/i18n/pt-br.tsv b/crates/ui-egui/src/i18n/pt-br.tsv
index afd10a5fbc..983e10653a 100644
--- a/crates/ui-egui/src/i18n/pt-br.tsv
+++ b/crates/ui-egui/src/i18n/pt-br.tsv
@@ -7227,7 +7227,9 @@ swatch	Yellow Green	Verde-amarelado
 @msg	“{shown}” opens {_1} files, not `{_2}`	“{shown}” abre arquivos {_1}, não `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` é um plug-in do tipo `{_2}`, não um plug-in de importação
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` é um plug-in do tipo `{_2}`, não um plug-in de exportação
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` é um plug-in de importação: abra um arquivo com document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` é um plug-in de importação: abra um arquivo com document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` é um plug-in de exportação: exporte com document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` é um efeito dinâmico: aplique-o com effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	o plug-in de importação não retornou nenhum objeto
 @msg	an importer returns `objects` and `warnings`, not `{key}`	um plug-in de importação retorna `objects` e `warnings`, não `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	o arquivo é maior que os {MAX_INPUT_BYTES} bytes que um plug-in de importação lê
diff --git a/crates/ui-egui/src/i18n/ru.tsv b/crates/ui-egui/src/i18n/ru.tsv
index 2dca232079..15986bdd1f 100644
--- a/crates/ui-egui/src/i18n/ru.tsv
+++ b/crates/ui-egui/src/i18n/ru.tsv
@@ -7243,7 +7243,9 @@ shape	Open	Открытый
 @msg	“{shown}” opens {_1} files, not `{_2}`	«{shown}» открывает файлы {_1}, а не `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` является модулем вида `{_2}`, а не модулем импорта
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` является модулем вида `{_2}`, а не модулем экспорта
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` — модуль импорта: откройте файл с помощью document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` — модуль импорта: откройте файл с помощью document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` — модуль экспорта: экспортируйте с помощью document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` — динамический эффект: примените его с помощью effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	модуль импорта не вернул ни одного объекта
 @msg	an importer returns `objects` and `warnings`, not `{key}`	модуль импорта возвращает `objects` и `warnings`, а не `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	файл больше {MAX_INPUT_BYTES} байт, которые читает модуль импорта
diff --git a/crates/ui-egui/src/i18n/sv.tsv b/crates/ui-egui/src/i18n/sv.tsv
index e47c4e8662..16cc0b35e1 100644
--- a/crates/ui-egui/src/i18n/sv.tsv
+++ b/crates/ui-egui/src/i18n/sv.tsv
@@ -7263,8 +7263,8 @@ digits	Hindi	Hindi
 @msg	{what} would print on more than {MAX_TILES} tiles: scale it down	{what} skulle skrivas ut på fler än {MAX_TILES} rutor: skala ned det
 @msg	`{_1}` can't be edited or removed	`{_1}` kan inte redigeras eller tas bort
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` är ett plugin av typen `{_2}`, inte en exportfunktion
-@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect"}"}}	`{_1}` är en live-effekt: använd den med effect.apply {{"effect"}"}}
-@msg	`{_1}` is an exporter: export with document.export {{"format"}"}}	`{_1}` är en exportfunktion: exportera med document.export {{"format"}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` är en live-effekt: använd den med effect.apply {{"effect": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` är en exportfunktion: exportera med document.export {{"format": "{_2}"}}
 @msg	`{_1}` is built in and always listed	`{_1}` är inbyggd och listas alltid
 @msg	`{_1}` is not a font file the last text.findFontFiles search found	`{_1}` är inte en typsnittsfil som den senaste sökningen med text.findFontFiles hittade
 @msg	`{_1}` would be overwritten by the package: choose a different folder or name	`{_1}` skulle skrivas över av paketet: välj en annan mapp eller ett annat namn
@@ -8102,7 +8102,6 @@ digits	Hindi	Hindi
 @msg	not a Word document: its package has no main document part	inte ett Word-dokument: dess paket saknar huvuddokumentdel
 @msg	not a Word document: its WordDocument stream doesn't start with a file information block	inte ett Word-dokument: dess WordDocument-ström börjar inte med ett filinformationsblock
 @msg	not an image VectorCraft reads (see document.formats)	inte en bild som VectorCraft kan läsa (se document.formats)
-@msg	not an RTF file: it doesn't start with not an RTF file: it doesn't start with {\rtf	inte en RTF-fil: den börjar inte med inte en RTF-fil: den börjar inte med {\rtf
 @msg	not area type (text in a frame) outside perspective	inte områdestext (text i en ram) utanför perspektivet
 @msg	not editing an opacity mask	redigerar inte en opacitetsmask
 @msg	not JSON: {e}	inte JSON: {e}
@@ -8597,7 +8596,7 @@ digits	Hindi	Hindi
 @msg	`importer` must be a plug-in format id (see document.formats)	`importer` måste vara ett formatid för ett plugin (se document.formats)
 @msg	“{shown}” opens {_1} files, not `{_2}`	”{shown}” öppnar {_1}-filer, inte `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` är ett plugin av typen `{_2}`, inte en importfunktion
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` är en importfunktion: öppna en fil med document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` är en importfunktion: öppna en fil med document.open {{"importer": "{_2}"}}
 @msg	the importer returned no objects	importfunktionen returnerade inga objekt
 @msg	an importer returns `objects` and `warnings`, not `{key}`	en importfunktion returnerar `objects` och `warnings`, inte `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	filen är större än de {MAX_INPUT_BYTES} byte som en importfunktion läser
diff --git a/crates/ui-egui/src/i18n/tests.rs b/crates/ui-egui/src/i18n/tests.rs
index 887eb4253b..4bbc0f45e6 100644
--- a/crates/ui-egui/src/i18n/tests.rs
+++ b/crates/ui-egui/src/i18n/tests.rs
@@ -1786,6 +1786,81 @@ fn templates_that_start_with_text_match_first() {
     assert_eq!(c.message("a.wasm is 9 bytes (limit 8)").map(|(f, _)| f), Some("sized {_1}"));
 }
 
+/// `{{` and `}}` in a message row are literal braces, in the English source and in the
+/// translation, as in a Rust format string; only the other `{name}` are placeholders.
+#[test]
+fn message_rows_read_doubled_braces_as_literal_braces() {
+    let c = Catalog::parse(concat!(
+        "@msg\t`{_1}` runs with plugin.run {{\"id\": \"{_2}\"}}\t`{_1}`: plugin.run {{\"id\": \"{_2}\"}} (fr)\n",
+        "@msg\tbraces {{}} and {_1}\tbraces {{}} with {_1}\n",
+        "@msg\tonly {{literal}} braces\tliteral {{braces}}\n",
+        "@msg\tnot an RTF file: it doesn't start with {\\\\rtf\tno RTF: {\\\\rtf\n",
+    ));
+    let (form, caps) = c.message(r#"`a.b` runs with plugin.run {"id": "plugin:a.b"}"#).expect("matches");
+    assert_eq!(caps, [("_1", "a.b"), ("_2", "plugin:a.b")]);
+    assert_eq!(fill_once(form, &caps), r#"`a.b`: plugin.run {"id": "plugin:a.b"} (fr)"#);
+    assert!(c.message(r#"`a.b` runs with plugin.run {{"id": "plugin:a.b"}}"#).is_none());
+    let (form, caps) = c.message("braces {} and x").expect("matches");
+    assert_eq!(fill_once(form, &caps), "braces {} with x");
+    let (form, caps) = c.message("only {literal} braces").expect("matches");
+    assert_eq!(fill_once(form, &caps), "literal {braces}");
+    // A `{` with no `}` after it is literal text too.
+    assert_eq!(c.message(r"not an RTF file: it doesn't start with {\rtf").map(|(f, _)| f), Some(r"no RTF: {\rtf"));
+    assert_eq!(placeholders(r#"{{"id": "{_2}"}} {{x}} {n}"#), ["_2", "n"]);
+}
+
+/// A format string's `{{` and `}}` stay literal braces in its catalog key, and only its real
+/// placeholders are numbered.
+#[test]
+fn message_keys_keep_doubled_braces() {
+    assert_eq!(
+        as_template(r#"`{}` is an importer: open a file with document.open {{"importer": "{}"}}"#),
+        r#"`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}"#
+    );
+    assert_eq!(as_template("{k} must be {{size?, position?}}"), "{k} must be {{size?, position?}}");
+    assert_eq!(as_template(r"it doesn't start with {\rtf"), r"it doesn't start with {\rtf");
+}
+
+/// `plugin.run` of an importer, an exporter or a live effect names the command that runs it with
+/// the JSON that picks it, and every complete-message catalog translates that error with the
+/// plug-in's id and the JSON kept.
+#[test]
+fn plugin_run_of_another_kind_is_translated_with_its_json() {
+    use serde_json::json;
+    use vectorcraft_plugins::wat as tpl;
+    let mut s = vectorcraft_engine::Session::new();
+    let plugins = [
+        ("test.i18n.reader", tpl::importer("test.i18n.reader", r#"["ti18n"]"#, "{}"), "is an importer"),
+        ("test.i18n.writer", tpl::exporter("test.i18n.writer", r#"["ti18n"]"#, "{}"), "is an exporter"),
+        ("test.i18n.effect", tpl::manifest("test.i18n.effect", "effect", "{}"), "is a live effect"),
+    ];
+    for (_, manifest, _) in &plugins {
+        let wasm = wat::parse_str(tpl::module(manifest, tpl::ECHO, "", 1)).unwrap();
+        s.execute("plugin.install", &json!({"dataBase64": vectorcraft_format::base64_encode(&wasm)})).unwrap();
+    }
+    s.execute("file.new", &json!({})).unwrap();
+    let errors: Vec<(String, &str, &str)> =
+        plugins.iter().map(|(id, _, english)| (s.execute("plugin.run", &json!({"id": id})).unwrap_err().to_string(), *id, *english)).collect();
+    for (id, _, _) in &plugins {
+        s.execute("plugin.remove", &json!({"id": id})).unwrap();
+    }
+    for code in COMPLETE_MESSAGES {
+        let lang = Lang::from_code(code).expect("registered");
+        for (e, id, english) in &errors {
+            assert!(e.contains(english), "{e}");
+            let json = &e[e.rfind('{').unwrap()..];
+            assert!(json.ends_with('}') && json.contains(id), "{e}");
+            let shown = message(lang, e);
+            assert!(!shown.contains(english) && shown.contains(json) && shown.contains(&format!("`{id}`")), "{code}: {e} -> {shown}");
+        }
+    }
+    assert!(
+        message(de(), &errors[0].0).ends_with(r#"Öffnen Sie eine Datei mit document.open {"importer": "plugin.test.i18n.reader"}"#),
+        "{}",
+        message(de(), &errors[0].0)
+    );
+}
+
 /// A `@msgplural` row translates both English forms of a message with a count, and the count
 /// picks the language's form.
 #[test]
@@ -3515,7 +3590,8 @@ fn string_literal(s: &str) -> Option<String> {
     }
 }
 
-/// A format string as a catalog template (see [`message_literals`]).
+/// A format string as a catalog template (see [`message_literals`]). `{{` and `}}` stay as they
+/// are, the catalogs' literal braces.
 fn as_template(s: &str) -> String {
     let mut out = String::new();
     let mut unnamed = 0;
@@ -3523,7 +3599,15 @@ fn as_template(s: &str) -> String {
     while let Some(a) = rest.find('{') {
         out.push_str(&rest[..a]);
         let after = &rest[a + 1..];
-        let Some(b) = after.find('}') else { break };
+        if let Some(escaped) = after.strip_prefix('{') {
+            out.push_str("{{");
+            rest = escaped;
+            continue;
+        }
+        let Some(b) = after.find('}') else {
+            out.push_str(&rest[a..]);
+            return out;
+        };
         let name = after[..b].split(':').next().unwrap_or("");
         if name.is_empty() {
             unnamed += 1;
diff --git a/crates/ui-egui/src/i18n/tr.tsv b/crates/ui-egui/src/i18n/tr.tsv
index 5983ec4bfe..8f4b7afa9c 100644
--- a/crates/ui-egui/src/i18n/tr.tsv
+++ b/crates/ui-egui/src/i18n/tr.tsv
@@ -7110,7 +7110,9 @@ breakText	Glyphs	Glifler
 @msg	“{shown}” opens {_1} files, not `{_2}`	“{shown}” {_1} dosyalarını açar, `{_2}` dosyasını değil
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}`, `{_2}` türünde bir eklentidir, içe aktarma eklentisi değildir
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}`, `{_2}` türünde bir eklentidir, dışa aktarma eklentisi değildir
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` bir içe aktarma eklentisidir: dosyayı document.open {{"importer"}"}} ile açın
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` bir içe aktarma eklentisidir: dosyayı document.open {{"importer": "{_2}"}} ile açın
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` bir dışa aktarma eklentisidir: document.export {{"format": "{_2}"}} ile dışa aktarın
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` canlı bir efekttir: effect.apply {{"effect": "{_2}"}} ile uygulayın
 @msg	the importer returned no objects	içe aktarma eklentisi hiç nesne döndürmedi
 @msg	an importer returns `objects` and `warnings`, not `{key}`	içe aktarma eklentisi `{key}` değil, `objects` ve `warnings` döndürür
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	dosya, içe aktarma eklentisinin okuduğu {MAX_INPUT_BYTES} bayttan büyük
diff --git a/crates/ui-egui/src/i18n/uk.tsv b/crates/ui-egui/src/i18n/uk.tsv
index 4c9326af72..f7e4170f44 100644
--- a/crates/ui-egui/src/i18n/uk.tsv
+++ b/crates/ui-egui/src/i18n/uk.tsv
@@ -6763,7 +6763,9 @@ breakText	Glyphs	Гліфи
 @msg	“{shown}” opens {_1} files, not `{_2}`	«{shown}» відкриває файли {_1}, а не `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` є модулем виду `{_2}`, а не модулем імпорту
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` є модулем виду `{_2}`, а не модулем експорту
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` - модуль імпорту: відкрийте файл за допомогою document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` - модуль імпорту: відкрийте файл за допомогою document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` - модуль експорту: експортуйте за допомогою document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` - динамічний ефект: застосуйте його за допомогою effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	модуль імпорту не повернув жодного об’єкта
 @msg	an importer returns `objects` and `warnings`, not `{key}`	модуль імпорту повертає `objects` і `warnings`, а не `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	файл більший за {MAX_INPUT_BYTES} байтів, які читає модуль імпорту
diff --git a/crates/ui-egui/src/i18n/vi.tsv b/crates/ui-egui/src/i18n/vi.tsv
index fef0b8ff90..a17949a0d2 100644
--- a/crates/ui-egui/src/i18n/vi.tsv
+++ b/crates/ui-egui/src/i18n/vi.tsv
@@ -6764,7 +6764,9 @@ breakText	Glyphs	Glyph
 @msg	“{shown}” opens {_1} files, not `{_2}`	“{shown}” mở tệp {_1}, không phải `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` là plug-in loại `{_2}`, không phải plug-in nhập
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` là plug-in loại `{_2}`, không phải plug-in xuất
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` là plug-in nhập: hãy mở tệp bằng document.open {{"importer"}"}}
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` là plug-in nhập: hãy mở tệp bằng document.open {{"importer": "{_2}"}}
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` là plug-in xuất: hãy xuất bằng document.export {{"format": "{_2}"}}
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` là hiệu ứng trực tiếp: hãy áp dụng bằng effect.apply {{"effect": "{_2}"}}
 @msg	the importer returned no objects	plug-in nhập không trả về đối tượng nào
 @msg	an importer returns `objects` and `warnings`, not `{key}`	plug-in nhập trả về `objects` và `warnings`, không phải `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	tệp lớn hơn {MAX_INPUT_BYTES} byte mà plug-in nhập đọc
diff --git a/crates/ui-egui/src/i18n/zh-hans.tsv b/crates/ui-egui/src/i18n/zh-hans.tsv
index a0d941ada8..47f1408dd1 100644
--- a/crates/ui-egui/src/i18n/zh-hans.tsv
+++ b/crates/ui-egui/src/i18n/zh-hans.tsv
@@ -6995,7 +6995,9 @@ breakText	Glyphs	字形
 @msg	“{shown}” opens {_1} files, not `{_2}`	“{shown}” 打开的是 {_1} 文件，不是 `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` 是 `{_2}` 类型的增效工具，不是导入增效工具
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` 是 `{_2}` 类型的增效工具，不是导出增效工具
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` 是导入增效工具：请用 document.open {{"importer"}"}} 打开文件
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` 是导入增效工具：请用 document.open {{"importer": "{_2}"}} 打开文件
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` 是导出增效工具：请用 document.export {{"format": "{_2}"}} 导出
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` 是实时效果：请用 effect.apply {{"effect": "{_2}"}} 应用
 @msg	the importer returned no objects	导入增效工具未返回任何对象
 @msg	an importer returns `objects` and `warnings`, not `{key}`	导入增效工具返回 `objects` 和 `warnings`，不是 `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	文件超过导入增效工具读取的 {MAX_INPUT_BYTES} 字节
diff --git a/crates/ui-egui/src/i18n/zh-hant.tsv b/crates/ui-egui/src/i18n/zh-hant.tsv
index b724e57351..6124d0366a 100644
--- a/crates/ui-egui/src/i18n/zh-hant.tsv
+++ b/crates/ui-egui/src/i18n/zh-hant.tsv
@@ -6801,7 +6801,9 @@ breakText	Glyphs	字符
 @msg	“{shown}” opens {_1} files, not `{_2}`	「{shown}」開啟的是 {_1} 檔案，不是 `{_2}`
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an importer	`{_1}` 是 `{_2}` 類型的增效模組，不是匯入增效模組
 @msg	`{_1}` is a plug-in of kind `{_2}`, not an exporter	`{_1}` 是 `{_2}` 類型的增效模組，不是匯出增效模組
-@msg	`{_1}` is an importer: open a file with document.open {{"importer"}"}}	`{_1}` 是匯入增效模組：請用 document.open {{"importer"}"}} 開啟檔案
+@msg	`{_1}` is an importer: open a file with document.open {{"importer": "{_2}"}}	`{_1}` 是匯入增效模組：請用 document.open {{"importer": "{_2}"}} 開啟檔案
+@msg	`{_1}` is an exporter: export with document.export {{"format": "{_2}"}}	`{_1}` 是匯出增效模組：請用 document.export {{"format": "{_2}"}} 匯出
+@msg	`{_1}` is a live effect: apply it with effect.apply {{"effect": "{_2}"}}	`{_1}` 是即時效果：請用 effect.apply {{"effect": "{_2}"}} 套用
 @msg	the importer returned no objects	匯入增效模組未傳回任何物件
 @msg	an importer returns `objects` and `warnings`, not `{key}`	匯入增效模組傳回 `objects` 和 `warnings`，不是 `{key}`
 @msg	the file is larger than the {MAX_INPUT_BYTES} bytes an importer reads	檔案超過匯入增效模組讀取的 {MAX_INPUT_BYTES} 位元組