From 14d28dbf4e9c67333c54aed51c0a1dab9a264c17 Mon Sep 17 00:00:00 2001
From: frozolotl <44589151+frozolotl@users.noreply.github.com>
Date: Tue, 12 Sep 2023 19:26:35 +1000
Subject: [PATCH] Gracefully handle error if field was not defined (#2110)

---
 crates/typst-cli/src/query.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/crates/typst-cli/src/query.rs b/crates/typst-cli/src/query.rs
index 55f04fe80..0db6eb540 100644
--- a/crates/typst-cli/src/query.rs
+++ b/crates/typst-cli/src/query.rs
@@ -83,7 +83,7 @@ fn retrieve(
 /// Format the query result in the output format.
 fn format(elements: Vec<Content>, command: &QueryCommand) -> StrResult<String> {
     if command.one && elements.len() != 1 {
-        bail!("expected exactly one element, found {}", elements.len())
+        bail!("expected exactly one element, found {}", elements.len());
     }
 
     let mapped: Vec<_> = elements
@@ -95,7 +95,10 @@ fn format(elements: Vec<Content>, command: &QueryCommand) -> StrResult<String> {
         .collect();
 
     if command.one {
-        serialize(&mapped[0], command.format)
+        let Some(value) = mapped.get(0) else {
+            bail!("no such field found for element");
+        };
+        serialize(value, command.format)
     } else {
         serialize(&mapped, command.format)
     }