import (4apr20)

git-svn-id: svn://tug.org/texlive/trunk@54683 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 32 insertions, 8 deletions

diff --git a/Master/texmf-dist/tex/latex/import/import.sty b/Master/texmf-dist/tex/latex/import/import.sty
index e22e32a7904..69bc86215ed 100644
--- a/Master/texmf-dist/tex/latex/import/import.sty
+++ b/Master/texmf-dist/tex/latex/import/import.sty
@@ -1,4 +1,4 @@
-% import.sty  Ver 6.0  22-Jan-2020  Donald Arseneau  (asnd@triumf.ca)
+% import.sty  Ver 6.2  01-Apr-2020  Donald Arseneau  (asnd@triumf.ca)
 %
 % This software is in the public domain; free of any restrictions.
 %
@@ -38,11 +38,11 @@
 % definition ensures paths end with "/" on most systems, but removes
 % "][" from within sub-import directory paths on VMS systems.
 %
-% Presently, the paths are defined ``locally'' so input files must have 
-% balanced grouping.
+% Presently, the paths are defined `locally' (not globally) so input
+% files must have balanced grouping.
 %====================== END INSTRUCTIONS ===========================
 
-\ProvidesPackage{import}[2020/01/22 \space  v 6.0]
+\ProvidesPackage{import}[2020/04/01 \space  v 6.2]
 \ProcessOptions
 
 \@ifundefined{import}{%
@@ -84,7 +84,7 @@
   \protected@edef\input@path{{\import@path}#2}%
   \protected@edef\Ginput@path{{\import@path}#3}%
   \protected@edef\import@path@file{% use full path/file for non-*
-    \ifx\IfFileExists\@iffileonpath\else \import@path\fi #7}%
+    \import@path #7}%
 %
   \expandafter#1\expandafter{\import@path@file}%
 %
@@ -96,6 +96,8 @@
 
 % Our version of \IfFileExists that gives priority to files on \input@path,
 % #1 = file name,  #2 = action when exists, #3 = action when not exists
+% In 2020 LaTeX redefines \IfFileExists, so I need two variants.
+\@ifundefined{IfFileExists@}{% pre-2020
 \long\def \im@iffileexists#1#2#3{%
   \let\@filef@und\@undefined
   \ifx\input@path\@undefined\else 
@@ -112,10 +114,31 @@
       \edef\@filef@und{#1 }%
       \def\reserved@a{#2}%
   \fi\fi
-  \reserved@a
-}
+  \reserved@a}
+}{% ca 2020
+\DeclareRobustCommand\im@iffileexists[1]{%
+  \set@curr@file{#1}%
+  \expandafter\im@iffileexists@\expandafter{\@curr@file}}
+\long\def \im@iffileexists@#1#2#3{%
+  \let\@filef@und\@undefined
+  \ifx\input@path\@undefined\else 
+    \@iffileonpath{#1}{% (also defines \@filef@und)
+      \def\reserved@a{#2}%
+    }{}% no action yet for not found
+  \fi
+  \ifx\@filef@und\@undefined % not found on \input@path
+    \openin\@inputcheck"#1" %
+    \ifeof\@inputcheck
+      \def\reserved@a{#3}%
+    \else
+      \closein\@inputcheck
+      \edef\@filef@und{"#1" }%
+      \def\reserved@a{#2}%
+  \fi\fi
+  \reserved@a}
+ }
 
-\let\im@@IfFileExists\IfFileExists
+\let\im@@IfFileExists\IfFileExists % remember original
 \gdef\import@path{}
 
 \let\import@path@fix\@firstofone % default
@@ -129,6 +152,7 @@
 \fi
 
 % Check for "[]" currdir (VMS file names) and set \import@path@fix appropriately
+% \subimport{[.subdir]}{file}
 \gdef\@gtempa{[]}
 \ifx\@gtempa\@currdir % VMS directory syntax
  \gdef\import@path@fix#1{\@gobbleVMSbrack#1][>}