Store spaces/tabs as actives in v-type arg

latex3 · Jan 8, 2025 · 0071423 · 0071423
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diff --git a/base/changes.txt b/base/changes.txt
@@ -6,6 +6,11 @@ to completeness or accuracy and it contains some references to files that are
 not part of the distribution.
 ================================================================================
 
+2025-01-08  Joseph Wright  <Joseph.Wright@latex-project.org>
+
+	* ltcmd.dtx:
+	Correct catcode of space/tab in v-type arg
+
 2025-01-03  Frank Mittelbach  <Frank.Mittelbach@latex-project.org>
 
 	* lthooks.dtx (subsubsection{Updating code for hooks}):

diff --git a/base/ltcmd.dtx b/base/ltcmd.dtx
@@ -34,8 +34,8 @@
 %%% From File: ltcmd.dtx
 %
 %    \begin{macrocode}
-\def\ltcmdversion{v1.2f}
-\def\ltcmddate{2024-12-25}
+\def\ltcmdversion{v1.2g}
+\def\ltcmddate{2025-01-08}
 %    \end{macrocode}
 %
 %<*driver>
@@ -3663,20 +3663,37 @@
 % \end{macro}
 %
 % \begin{macro}{\@@_grab_v_aux_catcodes:}
+% \changes{v1.2g}{2025-01-08}{Store spaces and tabs as active chars}
 % \begin{macro}{\@@_grab_v_aux_abort:n}
 %   The approach for short verbatim arguments is to make the end-line
 %   character a macro parameter character: this is forbidden by the
 %   rest of the code. Then the error branch can check what caused the
 %   bail out and give the appropriate error message.
 %    \begin{macrocode}
+%<latexrelease>\IncludeInRelease{2025/06/01}{\@@_grab_v_aux_catcodes:}%
+%<latexrelease>  {Active~spaces~and~tabs}
 \cs_new_protected:Npn \@@_grab_v_aux_catcodes:
   {
     \cs_set_eq:NN \do \char_set_catcode_other:N
     \dospecials
+    \char_set_catcode_active:n { `\  }
+    \char_set_catcode_active:n { `\^^I }
     \bool_if:NTF \l_@@_long_bool
       { \char_set_catcode_other:n { \tex_endlinechar:D } }
       { \char_set_catcode_parameter:n { \tex_endlinechar:D } }
   }
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{2020/10/01}{\@@_grab_v_aux_catcodes:}%
+%<latexrelease>  {Active~spaces~and~tabs}
+%<latexrelease>\cs_new_protected:Npn \@@_grab_v_aux_catcodes:
+%<latexrelease>  {
+%<latexrelease>    \cs_set_eq:NN \do \char_set_catcode_other:N
+%<latexrelease>    \dospecials
+%<latexrelease>    \bool_if:NTF \l_@@_long_bool
+%<latexrelease>      { \char_set_catcode_other:n { \tex_endlinechar:D } }
+%<latexrelease>      { \char_set_catcode_parameter:n { \tex_endlinechar:D } }
+%<latexrelease>  }
+%<latexrelease>\EndIncludeInRelease
 \cs_new_protected:Npn \@@_grab_v_aux_abort:n #1
   {
     \@@_grab_v_group_end:

diff --git a/base/testfiles-ltcmd/github-0876.tlg b/base/testfiles-ltcmd/github-0876.tlg
@@ -4,15 +4,15 @@ The token list contains the tokens:
 >  b (the character b)
 >  a (the character a)
 >  r (the character r)
->    (blank space  )
+>    (active character=macro:-> )
 >  b (the character b)
 >  a (the character a)
 >  r (the character r).
 <recently read> }
 l. ...bar+
          ^^M
 The token list contains the tokens:
->    (blank space  )
+>    (active character=macro:-> )
 >  b (the character b)
 >  a (the character a)
 >  r (the character r)

diff --git a/base/testfiles-ltcmd/ltcmd003.tlg b/base/testfiles-ltcmd/ltcmd003.tlg
@@ -3,6 +3,14 @@ Don't change this file in any respect.
 Author: Bruno Le Floch
 I got '\foo-\foo-{}
 I got '\foo-% ^^-{k}
+! Undefined control sequence.
+<argument> \ERROR 
+l. ...\foo+% ^^+^^+
+The control sequence at the end of the top line
+of your error message was never \def'ed. If you have
+misspelled it (e.g., `\hobx'), type `I' and the correct
+spelling (e.g., `I\hbox'). Otherwise just continue,
+and I'll forget about whatever was undefined.
 I got '\foo*-#^^-{&&&}
 I got '\foo*-%#^^-{}
 I got '\foo*-%^^-{}

diff --git a/base/testfiles-lthooks/lthooks-rollback-args.tlg b/base/testfiles-lthooks/lthooks-rollback-args.tlg
@@ -116,6 +116,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/github-0479-often.luatex.tlg b/base/testfiles/github-0479-often.luatex.tlg
@@ -126,6 +126,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/github-0479-often.tlg b/base/testfiles/github-0479-often.tlg
@@ -116,6 +116,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/github-0479-often.xetex.tlg b/base/testfiles/github-0479-often.xetex.tlg
@@ -116,6 +116,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-003-often.luatex.tlg b/base/testfiles/tlb-latexrelease-rollback-003-often.luatex.tlg
@@ -108,6 +108,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....
@@ -960,6 +962,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-003-often.tlg b/base/testfiles/tlb-latexrelease-rollback-003-often.tlg
@@ -102,6 +102,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....
@@ -944,6 +946,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-003-often.xetex.tlg b/base/testfiles/tlb-latexrelease-rollback-003-often.xetex.tlg
@@ -102,6 +102,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....
@@ -953,6 +955,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2020-10-01.luatex.tlg b/base/testfiles/tlb-latexrelease-rollback-2020-10-01.luatex.tlg
@@ -126,6 +126,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2020-10-01.tlg b/base/testfiles/tlb-latexrelease-rollback-2020-10-01.tlg
@@ -116,6 +116,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2020-10-01.xetex.tlg b/base/testfiles/tlb-latexrelease-rollback-2020-10-01.xetex.tlg
@@ -116,6 +116,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2021-06-01.luatex.tlg b/base/testfiles/tlb-latexrelease-rollback-2021-06-01.luatex.tlg
@@ -127,6 +127,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2021-06-01.tlg b/base/testfiles/tlb-latexrelease-rollback-2021-06-01.tlg
@@ -116,6 +116,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2021-06-01.xetex.tlg b/base/testfiles/tlb-latexrelease-rollback-2021-06-01.xetex.tlg
@@ -116,6 +116,8 @@ Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Skipping: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2021-11-15.luatex.tlg b/base/testfiles/tlb-latexrelease-rollback-2021-11-15.luatex.tlg
@@ -127,6 +127,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2021-11-15.tlg b/base/testfiles/tlb-latexrelease-rollback-2021-11-15.tlg
@@ -116,6 +116,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2021-11-15.xetex.tlg b/base/testfiles/tlb-latexrelease-rollback-2021-11-15.xetex.tlg
@@ -116,6 +116,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2022-06-01.luatex.tlg b/base/testfiles/tlb-latexrelease-rollback-2022-06-01.luatex.tlg
@@ -128,6 +128,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2022-06-01.tlg b/base/testfiles/tlb-latexrelease-rollback-2022-06-01.tlg
@@ -117,6 +117,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2022-06-01.xetex.tlg b/base/testfiles/tlb-latexrelease-rollback-2022-06-01.xetex.tlg
@@ -117,6 +117,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2022-11-01.luatex.tlg b/base/testfiles/tlb-latexrelease-rollback-2022-11-01.luatex.tlg
@@ -128,6 +128,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2022-11-01.tlg b/base/testfiles/tlb-latexrelease-rollback-2022-11-01.tlg
@@ -117,6 +117,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2022-11-01.xetex.tlg b/base/testfiles/tlb-latexrelease-rollback-2022-11-01.xetex.tlg
@@ -117,6 +117,8 @@ Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....

diff --git a/base/testfiles/tlb-latexrelease-rollback-2023-06-01.luatex.tlg b/base/testfiles/tlb-latexrelease-rollback-2023-06-01.luatex.tlg
@@ -128,6 +128,8 @@ Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Applying: [....-..-..] Support \ShowCommand in ltcmd on input line ....
 Already applied: [....-..-..] Support \ShowCommand in ltcmd on input line ....
+Skipping: [....-..-..] Active spaces and tabs on input line ....
+Applying: [....-..-..] Active spaces and tabs on input line ....
 Skipping: [....-..-..] Endlines as \obeyedline  on input line ....
 Applying: [....-..-..] Endlines as \obeyedline  on input line ....
 Skipping: [....-..-..] Trim spaces from envname first on input line ....