strtoumax: fix typo in previous commit.

[gnulib.git] / tests / init.sh

diff --git a/tests/init.sh b/tests/init.sh
index 458a448..bd2048e 100644 (file)
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,6 +1,6 @@
 # source this file; set up for tests
 
-# Copyright (C) 2009-2011 Free Software Foundation, Inc.
+# Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -61,7 +61,7 @@ ME_=`expr "./$0" : '.*/\(.*\)$'`
 
 # We use a trap below for cleanup.  This requires us to go through
 # hoops to get the right exit status transported through the handler.
-# So use `Exit STATUS' instead of `exit STATUS' inside of the tests.
+# So use 'Exit STATUS' instead of 'exit STATUS' inside of the tests.
 # Turn off errexit here so that we don't trip the bug with OSF1/Tru64
 # sh inside this function.
 Exit () { set +e; (exit $1); exit $1; }
@@ -172,7 +172,7 @@ else
     if test "$re_shell_" = __current__; then
       # 'eval'ing this code makes Solaris 10's /bin/sh exit with
       # $? set to 2.  It does not evaluate any of the code after the
-      # "unexpected" first `('.  Thus, we must run it in a subshell.
+      # "unexpected" first '('.  Thus, we must run it in a subshell.
       ( eval "$gl_shell_test_script_" ) > /dev/null 2>&1
     else
       "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null
@@ -207,6 +207,14 @@ else
   fi
 fi
 
+# If this is bash, turn off all aliases.
+test -n "$BASH_VERSION" && unalias -a
+
+# Note that when supporting $EXEEXT (transparently mapping from PROG_NAME to
+# PROG_NAME.exe), we want to support hyphen-containing names like test-acos.
+# That is part of the shell-selection test above.  Why use aliases rather
+# than functions?  Because support for hyphen-containing aliases is more
+# widespread than that for hyphen-containing function names.
 test -n "$EXEEXT" && shopt -s expand_aliases
 
 # Enable glibc's malloc-perturbing option.
@@ -242,20 +250,23 @@ compare_dev_null_ ()
 
   if test "x$1" = x/dev/null; then
     test -s "$2" || return 0
-    { emit_diff_u_header_ "$@"; sed 's/^/+/' -- "$2"; } >&2
+    emit_diff_u_header_ "$@"; sed 's/^/+/' "$2"
     return 1
   fi
 
   if test "x$2" = x/dev/null; then
     test -s "$1" || return 0
-    { emit_diff_u_header_ "$@"; sed 's/^/-/' -- "$1"; } >&2
+    emit_diff_u_header_ "$@"; sed 's/^/-/' "$1"
     return 1
   fi
 
   return 2
 }
 
-if diff_out_=`( diff -u "$0" "$0" < /dev/null ) 2>/dev/null`; then
+if diff_out_=`exec 2>/dev/null; diff -u "$0" "$0" < /dev/null` \
+   && diff -u Makefile "$0" 2>/dev/null | grep '^[+]#!' >/dev/null; then
+  # diff accepts the -u option and does not (like AIX 7 'diff') produce an
+  # extra space on column 1 of every content line.
   if test -z "$diff_out_"; then
     compare_ () { diff -u "$@"; }
   else
@@ -273,7 +284,7 @@ if diff_out_=`( diff -u "$0" "$0" < /dev/null ) 2>/dev/null`; then
       fi
     }
   fi
-elif diff_out_=`( diff -c "$0" "$0" < /dev/null ) 2>/dev/null`; then
+elif diff_out_=`exec 2>/dev/null; diff -c "$0" "$0" < /dev/null`; then
   if test -z "$diff_out_"; then
     compare_ () { diff -c "$@"; }
   else
@@ -304,11 +315,17 @@ fi
 # Otherwise, propagate $? to caller: any diffs have already been printed.
 compare ()
 {
-  compare_dev_null_ "$@" || :
-  case $? in
-    0|1) return $?;;
-    *) compare_ "$@";;
-  esac
+  # This looks like it can be factored to use a simple "case $?"
+  # after unchecked compare_dev_null_ invocation, but that would
+  # fail in a "set -e" environment.
+  if compare_dev_null_ "$@"; then
+    return 0
+  else
+    case $? in
+      1) return 1;;
+      *) compare_ "$@";;
+    esac
+  fi
 }
 
 # An arbitrary prefix to help distinguish test directories.
@@ -394,8 +411,7 @@ path_prepend_ ()
     case $path_dir_ in
       '') fail_ "invalid path dir: '$1'";;
       /*) abs_path_dir_=$path_dir_;;
-      *) abs_path_dir_=`cd "$initial_cwd_/$path_dir_" && echo "$PWD"` \
-           || fail_ "invalid path dir: $path_dir_";;
+      *) abs_path_dir_=$initial_cwd_/$path_dir_;;
     esac
     case $abs_path_dir_ in
       *:*) fail_ "invalid path dir: '$abs_path_dir_'";;
@@ -431,7 +447,7 @@ setup_ ()
   pfx_=`testdir_prefix_`
   test_dir_=`mktempd_ "$initial_cwd_" "$pfx_-$ME_.XXXX"` \
     || fail_ "failed to create temporary directory in $initial_cwd_"
-  cd "$test_dir_"
+  cd "$test_dir_" || fail_ "failed to cd to temporary directory"
 
   # As autoconf-generated configure scripts do, ensure that IFS
   # is defined initially, so that saving and restoring $IFS works.