store: don't create dirs ending in period or space for hashed paths (issue1417)

Windows won't create directories with names ending in period or space, so
we replace the last period/space character in truncated directory names of
hashed paths with some other character (underbar).

mercurial/store.py

@@ -111,6 +111,9 b' def hybridencode(path):'
         sdirs = []
         for p in parts[:-1]:
             d = p[:DIR_PREFIX_LEN]
+            if d[-1] in '. ':
+                # Windows can't access dirs ending in period or space
+                d = d[:-1] + '_'
             t = '/'.join(sdirs) + '/' + d
             if len(t) > _MAX_SHORTENED_DIRS_LEN:
                 break

tests/test-hybridencode.py

@@ -14,3 +14,5 b" show('data/aux.bla/bla.aux/prn/PRN/lpt/c"
 show('data/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT.i')
 show('data/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider.i')
 show('data/AUX.THE-QUICK-BROWN-FOX-JU:MPS-OVER-THE-LAZY-DOG-THE-QUICK-BROWN-FOX-JUMPS-OVER-THE-LAZY-DOG.TXT.i')
+show('data/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt')
+show('data/Project.Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt')

tests/test-hybridencode.py.out

@@ -10,3 +10,9 b" B = 'dh/enterpri/openesba/contrib-/corba"
 A = 'data/AUX.THE-QUICK-BROWN-FOX-JU:MPS-OVER-THE-LAZY-DOG-THE-QUICK-BROWN-FOX-JUMPS-OVER-THE-LAZY-DOG.TXT.i'
 B = 'dh/au~78.the-quick-brown-fox-ju~3amps-over-the-lazy-dog-the-quick-brown-fox-jud4dcadd033000ab2b26eb66bae1906bcb15d4a70.i'
 
+A = 'data/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt'
+B = 'dh/project_/resource/anotherl/followed/andanoth/andthenanextremelylongfilenaf93030515d9849cfdca52937c2204d19f83913e5.txt'
+
+A = 'data/Project.Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt'
+B = 'dh/project_/resource/anotherl/followed/andanoth/andthenanextremelylongfilena0fd7c506f5c9d58204444fc67e9499006bd2d445.txt'
+