Suppress prefix conversion for angle units and percent (fixes #771)

josephwright · Jan 17, 2025 · 64a58ce · 64a58ce
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Showing 4 changed files with 16 additions and 8 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,10 @@ Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to
 
 ## [Unreleased]
 
+### Changed
+- Suppress prefix conversion for angle units and `\percent` (see issue
+  [\#771](https://github.com/josephwright/siunitx/issues/771))
+
 ### Fixed
 - Printing of exponent part in `\ang` (see issue
   [\#769](https://github.com/josephwright/siunitx/issues/769))

diff --git a/siunitx-quantity.dtx b/siunitx-quantity.dtx
@@ -1,6 +1,6 @@
 % \iffalse meta-comment
 %
-% File: siunitx-quantity.dtx Copyright (C) 2018-2024 Joseph Wright
+% File: siunitx-quantity.dtx Copyright (C) 2018-2025 Joseph Wright
 %
 % It may be distributed and/or modified under the conditions of the
 % LaTeX Project Public License (LPPL), either version 1.3c of this
@@ -434,11 +434,13 @@
 %   \pkg{siunitx-unit} on options it does not contain.
 %    \begin{macrocode}
 \siunitx_unit_options_declare:Nn \arcminute
-  { quantity-product = { } }
+  { prefix-mode = input , quantity-product = { } }
 \siunitx_unit_options_declare:Nn \arcsecond
-  { quantity-product = { } }
+  { prefix-mode = input , quantity-product = { } }
 \siunitx_unit_options_declare:Nn \degree
-  { quantity-product = { } }
+  { prefix-mode = input , quantity-product = { } }
+\siunitx_unit_options_declare:Nn \percent
+  { prefix-mode = input }
 %    \end{macrocode}
 % \end{macro}
 %

diff --git a/siunitx-symbol.dtx b/siunitx-symbol.dtx
@@ -1,6 +1,6 @@
 % \iffalse meta-comment
 %
-% File: siunitx-symbol.dtx Copyright (C) 2018-2024 Joseph Wright
+% File: siunitx-symbol.dtx Copyright (C) 2018-2025 Joseph Wright
 %
 % It may be distributed and/or modified under the conditions of the
 % LaTeX Project Public License (LPPL), either version 1.3c of this
@@ -144,13 +144,13 @@
       {
         \siunitx_declare_unit:Nnn \arcminute
           { \ensuremath { { } ' } }
-          { quantity-product = { } }
+          { prefix-mode = input , quantity-product = { } }
       }
     \@@_if_replace:NnT \arcsecond { "02BA }
       {
         \siunitx_declare_unit:Nnn \arcsecond
           { \ensuremath { { } '' } }
-          { quantity-product = { } }
+          { prefix-mode = input , quantity-product = { } }
       }
 %    \end{macrocode}
 %   For |\degree|, direct input works in text mode so there is only a need to
@@ -172,7 +172,7 @@
                   { { } ^ { \exp_not:N \circ } }
               }
           }
-          { quantity-product = { } }
+          { prefix-mode = input , quantity-product = { } }
       }
 %    \end{macrocode}
 %   For |\degreeCelsius|, much the same to think about but the comparison

diff --git a/siunitx.tex b/siunitx.tex
@@ -2776,6 +2776,8 @@ \subsection{Quantities}
   \qty[prefix-mode = extract-exponent]{10}{\kilo\gram\squared\deci\second} \\
   \qty[prefix-mode = extract-exponent]{7.5}{\gram} \\
 \end{LaTeXdemo}
+This option does not apply to units \cs{degree}, \cs{arcminute}, \cs{arcsecond}
+and \cs{percent}.
 
 \DescribeOption{separate-uncertainty-units}
 When a number has multiple parts (such as a separate uncertainty) then the unit