From 9f7497c928e8bce2a732ca3df8b35d7dd9da84f3 Mon Sep 17 00:00:00 2001
From: Mc-Zen <52877387+Mc-Zen@users.noreply.github.com>
Date: Fri, 28 Aug 2026 12:58:35 +0200
Subject: [PATCH 1/2] [fix] exponent sign with math: false

---
 src/formatting.typ | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/src/formatting.typ b/src/formatting.typ
index 71c46a8..96c7a0f 100644
--- a/src/formatting.typ
+++ b/src/formatting.typ
@@ -23,12 +23,16 @@
 /// if `positive-sign` is set to true. In all other cases, the result is
 /// `none`.
 /// -> content | none
-#let format-sign(sign, positive-sign: false) = {
-  if sign == "-" {
-    math.class("unary", sym.minus)
+#let format-sign(sign, positive-sign: false, math: true) = {
+  sign = if sign == "-" {
+    sym.minus
   } else if sign == "+" and positive-sign {
-    return math.class("unary", sym.plus)
+    sym.plus
   }
+  if math {
+    sign = std.math.class("unary", sign)
+  }
+  sign
 }
 
 
@@ -167,7 +171,7 @@
   ))
 
   return sequence((
-    format-sign(it.sign, positive-sign: it.positive-sign),
+    format-sign(it.sign, positive-sign: it.positive-sign, math: it.math),
     format-integer((int: it.int, group: it.group)),
     frac,
   ))
@@ -215,6 +219,7 @@
     group: false,
     positive-sign: false,
     decimal-separator: it.decimal-separator,
+    math: it.math,
   )))
   if is-symmetric {
     if it.concise {
@@ -275,6 +280,7 @@
     group: false,
     positive-sign: it.positive-sign-exponent,
     decimal-separator: it.decimal-separator,
+    math: it.math
   ))
 
   if it.math {
@@ -368,7 +374,7 @@
   )
 
   let integer-part = (
-    format-sign(it.sign, positive-sign: it.positive-sign),
+    format-sign(it.sign, positive-sign: it.positive-sign, math: it.math),
     format-integer(integer),
   )
 

From 1f32718f920d6683a5196e028061f6e2fdb52232 Mon Sep 17 00:00:00 2001
From: Mc-Zen <52877387+Mc-Zen@users.noreply.github.com>
Date: Fri, 28 Aug 2026 13:07:11 +0200
Subject: [PATCH 2/2] [add] tests

---
 tests/num/positive-sign-exponent/ref.typ  |  9 +++++++++
 tests/num/positive-sign-exponent/test.typ | 13 +++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/tests/num/positive-sign-exponent/ref.typ b/tests/num/positive-sign-exponent/ref.typ
index c324aab..856e721 100644
--- a/tests/num/positive-sign-exponent/ref.typ
+++ b/tests/num/positive-sign-exponent/ref.typ
@@ -6,3 +6,12 @@ $1×10^(-1)$ \
 $1×10^(-1)$ \
 $1×10^(+9)$ \
 $1×10^(9)$ \
+
+#pagebreak()
+#set super(typographic: false)
+1#sym.space.thin×#sym.space.thin;10#super[3] \
+1#sym.space.thin×#sym.space.thin;10#super[+3] \
+1#sym.space.thin×#sym.space.thin;10#super[−1] \
+1#sym.space.thin×#sym.space.thin;10#super[−1] \
+1#sym.space.thin×#sym.space.thin;10#super[+9] \
+1#sym.space.thin×#sym.space.thin;10#super[9] \
diff --git a/tests/num/positive-sign-exponent/test.typ b/tests/num/positive-sign-exponent/test.typ
index ae95e09..ff929df 100644
--- a/tests/num/positive-sign-exponent/test.typ
+++ b/tests/num/positive-sign-exponent/test.typ
@@ -2,6 +2,19 @@
 #set page(width: auto, height: auto, margin: 2pt)
 
 
+#num("1e3", positive-sign-exponent: false) \
+#num("1e3", positive-sign-exponent: true) \
+#num("1e-1", positive-sign-exponent: false) \
+#num("1e-1", positive-sign-exponent: true) \
+#set-num(positive-sign-exponent: true)
+#num("1e9") \
+#set-num(positive-sign-exponent: false)
+#num("1e9")
+
+#pagebreak()
+
+#set-num(math: false)
+
 #num("1e3", positive-sign-exponent: false) \
 #num("1e3", positive-sign-exponent: true) \
 #num("1e-1", positive-sign-exponent: false) \