./configure is broken!

[AlexeiKharchev]

./autogen.sh --prefix=/libs/libxslt-1.1.37
./configure: line 14879: syntax error near unexpected token `;;'

./configure: line 14879: ` ;;'

somebody didnt check indents in folded if ... case ... esac else ... case ... esac

and made mistake screen_output.log

line 14909: WITH_THREADS="1"
line 14910: THREAD_LIBS="-lpthread"
line 14911: fi
line 14912: # ;; commented
line 14913: # esac commented
line 14914: fi

but there are other mistakes - wrong break line at line 15030

edit strange nested if block in line 15525:
line 15522: if test -n "$PYTHON_CFLAGS"; then
line 15523: pkg_cv_PYTHON_CFLAGS="$PYTHON_CFLAGS"
line 15524: elif test -n "$PKG_CONFIG"; then
line 15525: if test -n "$PKG_CONFIG" && \ ____________ => if [nothing] \
line 15526: { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ PKG_CONFIG --exists --print-errors "python${PYTHON_VERSION}""; } >&5

edit strange nested if block in line 15542:
line 15539: if test -n "$PYTHON_LIBS"; then
line 15540: pkg_cv_PYTHON_LIBS="$PYTHON_LIBS"
line 15541: elif test -n "$PKG_CONFIG"; then
line 15542: if test -n "$PKG_CONFIG" && \ ____________ => if [nothing] \
line 15543: { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ PKG_CONFIG --exists --print-errors "python${PYTHON_VERSION}""; } >&5

[AlexeiKharchev]

./configure was done by direct declaraing
PYTHON_LIBS="-lpython3.8" PYTHON_CFLAGS="-Iusr/include/python3.8" ./configure --prefix=....

But mistakes enumerated above, shoud be solved