Prevent expansion of \text in literal units

josephwright · Aug 29, 2023 · e108e45 · e108e45
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commit e108e45
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -13,6 +13,8 @@ Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to
   [\#690](https://github.com/josephwright/siunitx/issues/690))
 - Parse empty and zero exponents independently (see issue
   [\#692](https://github.com/josephwright/siunitx/issues/692))
+- Prevent expansion of `\text` in literal units (see issue
+  [\#691](https://github.com/josephwright/siunitx/issues/691))
 
 ## [v3.3.4] - 2023-08-24
 

diff --git a/siunitx-unit.dtx b/siunitx-unit.dtx
@@ -1250,6 +1250,7 @@
           { \token_to_str:N ^ } { ^ }
         \tl_replace_all:Nnn \exp_not:N \l_@@_tmp_tl
           { \token_to_str:N _ } { \c_@@_math_subscript_tl }
+        \cs_set_eq:NN \exp_not:N \text \scan_stop:
         \char_set_active_eq:NN ^
           \exp_not:N \@@_format_literal_superscript:
         \char_set_active_eq:NN _

diff --git a/testfiles/siunitx-unit.tlg b/testfiles/siunitx-unit.tlg
@@ -37,7 +37,7 @@ l. ...  }
 {a}}^{2}\,\mathrm {K}^{-1}_{\mathrm {b}}.
 <recently read> }
 l. ...  }
-> \l_tmpa_tl=\mathrm {\protect \text  {\protect \ensuremath  {a}}}.
+> \l_tmpa_tl=\mathrm {\text {\protect \ensuremath  {a}}}.
 <recently read> }
 l. ...  }
 > \l_tmpa_tl=\mathrm {s{}}.