File 4ti2-handle-prefix.patch of Package 4ti2

From: Jan Engelhardt <jengelh@inai.de>
Date: 2025-01-24 22:01:47+0100
Upstream: no (4ti2_ script prefix is openSUSE-specific)

realpath is needed to get the final directory (/usr/libexec/4ti2 in openSUSE),
but in doing so, we also get the final script name (zsolve), which is
undesired. FUNCTION needs to be derived from the initial unresolved $0 value.

---
 src/groebner/script.template    |    5 +++--
 src/groebner/script.template.in |    5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

Index: 4ti2-1.6.12/src/groebner/script.template
===================================================================
--- 4ti2-1.6.12.orig/src/groebner/script.template
+++ 4ti2-1.6.12/src/groebner/script.template
@@ -21,9 +21,10 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 
 
 # We locate where this script is so we can call the executables.
-SCRIPT=$(realpath $(which "$0"))
+FUNCTION="${0##*/}"
+FUNCTION="${FUNCTION#4ti2_}"
+SCRIPT=$(realpath "$(which "$0")")
 DIR=`dirname "$SCRIPT"`
-FUNCTION=`basename "$SCRIPT"`
 
 # The default executable.
 EXECUTABLE=4ti2int64
Index: 4ti2-1.6.12/src/groebner/script.template.in
===================================================================
--- 4ti2-1.6.12.orig/src/groebner/script.template.in
+++ 4ti2-1.6.12/src/groebner/script.template.in
@@ -21,9 +21,10 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 
 
 # We locate where this script is so we can call the executables.
-SCRIPT=$(realpath $(which "$0"))
+FUNCTION="${0##*/}"
+FUNCTION="${FUNCTION#4ti2_}"
+SCRIPT=$(realpath "$(which "$0")")
 DIR=`dirname "$SCRIPT"`
-FUNCTION=`basename "$SCRIPT"`
 
 # The default executable.
 EXECUTABLE=@GROEBNER_DEFAULT_EXECUTABLE@