Fix regression from commit 25c415b regarding \sphinxcline + booktabs

Can not add test for that, because it shows only after PDF build.

sphinx/texinputs/sphinxlatextables.sty

@@ -663,21 +663,21 @@
 % the initialization macros executed before the table environments
 % their scope is limited by a wrapper "savenotes" environment
 %
-% 0) color support is enacted via adding code to four hooks:
+% 0) color support is enacted via adding code to three hooks:
 %    - \sphinxtabletoprulehook       (implicit from \sphinxtoprule expansion)
-%    - \sphinxtableclinehook         (implicit from \sphinxcline expansion)
 %    - \sphinxtableatstartofbodyhook (explicit from table templates)
 %    - \sphinxtableafterendhook      (explicit from table templates)
-%
-% 1) we manage these four hooks in a way allowing a custom user extra wrapper
-% cenvironment from a container class to use them as entry point for some
-% custom code.  The container code is done first, prior to table templates.  So,
-% the style macros will *prepend* the needed color-code to the existing custom
-% user code, so the custom user code can override them.  The custom user code
-% should not redefine any of the 3 \sphinxtable...hook macros via a
+%    additionally special adjustment must be made in \sphinxcline
+%
+% 1) we manage these three hooks in a way allowing a custom user extra wrapper
+% environment from a container class to use them as entry point for some
+% custom code.  The container code is done first, prior to table templates.
+% So, the style macros will *prepend* the needed color-code to the existing
+% custom user code, so the custom user code can override them.  The custom
+% user code should not redefine any of the 3 \sphinxtable...hook macros via a
 % \global\def, but their contents can use \gdef if this is the user intention,
 % (attention that the hooks are executed from inside the table, except the
-%  afterend hook so probably the code in-there should use \noalign),
+% afterend hook so probably the code in-there should use \noalign),
 %
 % 2) the table templates and LaTeX writer code make it so that only
 % one of either
@@ -693,7 +693,6 @@
 % if it was already executed before as it self-annihilates).
 
 \let\sphinxtabletoprulehook      \@empty
-\let\sphinxtableclinehook        \@empty
 \let\sphinxtableatstartofbodyhook\@empty
 \let\sphinxtableafterendhook     \@empty
 
@@ -839,23 +838,21 @@
 % this macro is needed in color tables as each \cline or \cmidrule (booktabs)
 % consumes one \cr, offsetting the rownum parity.
 \def\spx@table@@decrementrownum{\noalign{\global\advance\rownum\m@ne}}
-
+\let\sphinxtabledecrementrownum\@empty
 
 % At last the style macros
 
 % \spx@toprule is what the styles define; the colorrows class will prepend
 % some code in \sphinxtabletoprulehook
 \def\sphinxtoprule{\spx@toprule\sphinxtabletoprulehook}
-% \spx@cline is what the styles define; the colorrows class will prepend
-% some code in \sphinxtableclinehook.  This hook is located first due
-% to constraint of the booktabs \cmidrule.
-\def\sphinxcline{\sphinxtableclinehook\spx@cline}
 
 % standard style
 \def\sphinxthistablewithstandardstyle{%
     % Those two are produced by the latex writer
     \def\sphinxhline      {\hline}%
-    \def\spx@cline        {\cline}%
+    % \sphinxtabledecrementrownum is a no-op which is redefined by colorrows
+    % to correct the \rownum increment induced by \cline in colorrows regime
+    \def\sphinxcline      {\sphinxtabledecrementrownum\cline}%
     % Those three are inserted by the table templates
     \def\spx@toprule      {\hline}%
     \def\sphinxmidrule    {\hline}%
@@ -890,11 +887,18 @@
 \def\sphinxbooktabsmidrule   {\midrule}
 \def\sphinxbooktabsbottomrule{\bottomrule}
 \let\sphinxbooktabscmidrule  \@gobble % i.e. draw no short rules at all!
+% You can redefine this to use \cmidrule with various options, such
+% as \cmidrule(lr), but:
+% Attention, if you want this to use \cmidrule (or \cline) you must
+% also include the \sphinxtabledecrementrownum token like e.g. this
+%     \def\sphinxbooktabscmidrule{\sphinxtabledecrementrownum\cmidrule}
+% and it must be first due to internals of the \cmidrule usage of \futurelet,
+% if the table uses row colours.
 
 \def\sphinxthistablewithbooktabsstyle{%
     \let\sphinxhline\@empty % there is no wrapper macro here so if you want to change that
                             % you will have to redefine \sphinxthistablewithbooktabsstyle
-    \def\spx@cline       {\sphinxbooktabscmidrule}% defaults to \@gobble
+    \def\sphinxcline     {\sphinxbooktabscmidrule}% defaults to \@gobble
     \def\spx@toprule     {\sphinxbooktabstoprule}%
     \def\sphinxmidrule   {\sphinxbooktabsmidrule}%
     \def\sphinxbottomrule{\sphinxbooktabsbottomrule}%
@@ -916,7 +920,7 @@ to allow local use of booktabs table style}%
 % borderless style
 \def\sphinxthistablewithborderlessstyle{%
     \let\sphinxhline      \@empty
-    \let\spx@cline        \@gobble
+    \let\sphinxcline      \@gobble
     \let\spx@toprule      \@empty
     \let\sphinxmidrule    \@empty
     \let\sphinxbottomrule \@empty
@@ -937,10 +941,9 @@ to allow local use of booktabs table style}%
 %
     \let\spx@table@toprulehook         \spx@table@@toprulehook
     \let\spx@table@startbodycolorrows  \spx@table@@startbodycolorrows
-    \let\spx@table@decrementrownum     \spx@table@@decrementrownum
+    \let\sphinxtabledecrementrownum    \spx@table@@decrementrownum
     \spx@prepend\spx@table@toprulehook       \to\sphinxtabletoprulehook
     \spx@prepend\spx@table@startbodycolorrows\to\sphinxtableatstartofbodyhook
-    \spx@prepend\spx@table@decrementrownum   \to\sphinxtableclinehook
 %
 % this one is not set to \@empty by norowcolors, because it looks harmless
 % to execute it always, as it simply resets to standard colortbl state after
@@ -958,10 +961,11 @@ to allow local use of booktabs table style}%
 % simply make it no-op, without even checking if really it was activated.
     \let\spx@table@toprulehook       \@empty
     \let\spx@table@startbodycolorrows\@empty
-    \let\spx@table@decrementrownum   \@empty
+    \let\sphinxtabledecrementrownum  \@empty
 % we don't worry about \sphinxtableafterendhook as the \spx@table@resetcolortbl
 % done at end can not do harm; and also we could have not bothered with the
-% \spx@table@decrementrownum as its action is harmless
+% \sphinxtabledecrementrownum as its \rownum decrement, if active, is harmless
+% in non-colorrows context
 }
 
 % The \sphinxarrayrulewidth is used for some complex matters of merged