Add test case for ninja quoting.

test cases/common/149 special characters/check_quoting.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+
+import sys
+
+expected = {
+    'newline': '\n',
+    'dollar': '$',
+    'colon': ':',
+    'space': ' ',
+    'multi1': '  ::$$  ::$$',
+    'multi2': '  ::$$\n\n  \n\n::$$',
+}
+
+output = None
+
+for arg in sys.argv[1:]:
+    try:
+        name, value = arg.split('=', 1)
+    except ValueError:
+        output = arg
+        continue
+
+    if expected[name] != value:
+        raise RuntimeError('{!r} is {!r} but should be {!r}'.format(name, value, expected[name]))
+
+if output is not None:
+    with open(output, 'w') as f:
+        f.write('Success!')

test cases/common/149 special characters/installed_files.txt

@@ -0,0 +1,2 @@
+usr/share/result
+usr/share/result2

test cases/common/149 special characters/meson.build

@@ -0,0 +1,37 @@
+project('ninja special characters' ,'c')
+
+python = import('python3').find_python()
+
+# Without newlines, this should appear directly in build.ninja.
+gen = custom_target('gen',
+  command : [
+    python,
+    files('check_quoting.py'),
+    'dollar=$',
+    'colon=:',
+    'space= ',
+    '''multi1=  ::$$  ::$$''',
+    '@OUTPUT@'],
+  output : 'result',
+  install : true,
+  install_dir : get_option('datadir'))
+
+# With newlines, this should go through the exe wrapper.
+gen2 = custom_target('gen2',
+  command : [
+    python,
+    files('check_quoting.py'),
+    '''newline=
+''',
+    'dollar=$',
+    'colon=:',
+    'space= ',
+    '''multi2=  ::$$
+
+  
+
+::$$''',
+    '@OUTPUT@'],
+  output : 'result2',
+  install : true,
+  install_dir : get_option('datadir'))