diffs: handle paths with quotes in diffs.

rhodecode/tests/fixtures/git_diff_js_chars.diff

@@ -0,0 +1,7 b''
+diff --git "a/\"><img src=x onerror=prompt(0)>/\"><img src=x onerror=prompt(1)>.txt" "b/\"><img src=x onerror=prompt(0)>/\"><img src=x onerror=prompt(1)>.txt"
+index e69de29..8eb97de 100644
+--- "a/\"><img src=x onerror=prompt(0)>/\"><img src=x onerror=prompt(1)>.txt"
++++ "b/\"><img src=x onerror=prompt(0)>/\"><img src=x onerror=prompt(1)>.txt"
+@@ -0,0 +1 @@
++Ehlo eglo
+\ No newline at end of file

rhodecode/lib/vcs/backends/git/diff.py

@@ -44,6 +44,6 b' class GitDiff(base.Diff):'
         (?:^index[ ](?P<a_blob_id>[0-9A-Fa-f]+)
             \.\.(?P<b_blob_id>[0-9A-Fa-f]+)[ ]?(?P<b_mode>.+)?(?:\n|$))?
         (?:^(?P<bin_patch>GIT[ ]binary[ ]patch)(?:\n|$))?
-        (?:^---[ ](a/(?P<a_file>.+)|/dev/null)(?:\n|$))?
-        (?:^\+\+\+[ ](b/(?P<b_file>.+)|/dev/null)(?:\n|$))?
+        (?:^---[ ]("?a/(?P<a_file>.+)|/dev/null)(?:\n|$))?
+        (?:^\+\+\+[ ]("?b/(?P<b_file>.+)|/dev/null)(?:\n|$))?
     """, re.VERBOSE | re.MULTILINE)

rhodecode/lib/vcs/backends/hg/diff.py

@@ -19,7 +19,7 b''
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
-GIT diff module
+HG diff module
 """
 
 import re
@@ -44,6 +44,6 b' class MercurialDiff(base.Diff):'
         (?:^index[ ](?P<a_blob_id>[0-9A-Fa-f]+)
             \.\.(?P<b_blob_id>[0-9A-Fa-f]+)[ ]?(?P<b_mode>.+)?(?:\n|$))?
         (?:^(?P<bin_patch>GIT[ ]binary[ ]patch)(?:\n|$))?
-        (?:^---[ ](a/(?P<a_file>.+)|/dev/null)(?:\n|$))?
-        (?:^\+\+\+[ ](b/(?P<b_file>.+)|/dev/null)(?:\n|$))?
+        (?:^---[ ]("?a/(?P<a_file>.+)|/dev/null)(?:\n|$))?
+        (?:^\+\+\+[ ]("?b/(?P<b_file>.+)|/dev/null)(?:\n|$))?
     """, re.VERBOSE | re.MULTILINE)

rhodecode/lib/vcs/backends/svn/diff.py

@@ -18,7 +18,6 b''
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
-
 """
 SVN diff module
 """
@@ -47,6 +46,6 b' class SubversionDiff(base.Diff):'
         (?:^index[ ](?P<a_blob_id>[0-9A-Fa-f]+)
             \.\.(?P<b_blob_id>[0-9A-Fa-f]+)[ ]?(?P<b_mode>.+)?(?:\n|$))?
         (?:^(?P<bin_patch>GIT[ ]binary[ ]patch)(?:\n|$))?
-        (?:^---[ ](a/(?P<a_file>.+)|/dev/null)\t\(revision[ ]\d+\)(?:\n|$))?
-        (?:^\+\+\+[ ](b/(?P<b_file>.+)|/dev/null)\t\(revision[ ]\d+\)(?:\n|$))?
+        (?:^---[ ]("?a/(?P<a_file>.+)|/dev/null)\t\(revision[ ]\d+\)(?:\n|$))?
+        (?:^\+\+\+[ ]("?b/(?P<b_file>.+)|/dev/null)\t\(revision[ ]\d+\)(?:\n|$))?
     """, re.VERBOSE | re.MULTILINE)

rhodecode/tests/lib/test_diffs.py

@@ -343,6 +343,14 b' DIFF_FIXTURES = ['
         'ops': {CHMOD_FILENODE: 'modified file chmod 100644 => 100755'}})
       ]),
     ('git',
+     'git_diff_js_chars.diff',
+     [('\\"><img src=x onerror=prompt(0)>/\\"><img src=x onerror=prompt(1)>.txt', 'M',
+       {'added': 1,
+        'deleted': 0,
+        'binary': False,
+        'ops': {MOD_FILENODE: 'modified file'}})
+      ]),
+    ('git',
      'git_diff_rename_file.diff',
      [('file.xls', 'M',
        {'added': 0,