What version are you running?
Ubuntu 18.04.1
RBTools 1.0.1
svn, version 1.9.7 (r1800392)
Python 3.6.6


What steps will reproduce the problem?

SVN commit a text file with content:

$ cat Test/test1
line1
line2
line3
line4
line5




Replace line3 with "new line3"


svn diff output:


Index: Test/test1
===================================================================
--- Test/test1  (revision 26385)
+++ Test/test1  (working copy)
@@ -1,5 +1,5 @@
 line1
 line2
-line3
+new line3
 line4
 line5



rbt diff output:

$ rbt diff
b'Index: /TestProject/trunk/Test/test1\n===================================================================\n--- /TestProject/trunk/Test/test1\t(revision 26385)\n+++ /TestProject/trunk/Test/test1\t(working copy)\n@@ -1,5 +1,5 @@\n line1\n line2\n-line3\n+new line3\n line4\n line5\n



What is the expected output? What do you see instead?
Ubuntu 16.04.5
RBTools 1.0.1
svn, version 1.9.9 (r1835931)
Python 2.7.14

$ svn diff
Index: Test/test1
===================================================================
--- Test/test1  (revision 26385)
+++ Test/test1  (working copy)
@@ -1,5 +1,5 @@
 line1
 line2
-line3
+new line3
 line4
 line5

$ rbt diff
Index: /TestProject/trunk/Test/test1
===================================================================
--- /TestProject/trunk/Test/test1   (revision 26385)
+++ /TestProject/trunk/Test/test1   (working copy)
@@ -1,5 +1,5 @@
 line1
 line2
-line3
+new line3
 line4
 line5


What operating system are you using?
Ubuntu 18.04.1
Attach the debug out from the command.

$ rbt diff --debug
>>> RBTools 1.0.1
>>> Python 3.6.6 (default, Sep 12 2018, 18:26:19) 
[GCC 8.0.1 20180414 (experimental) [trunk revision 259383]]
>>> Running on Linux-4.15.0-36-generic-x86_64-with-Ubuntu-18.04-bionic
>>> Home = /home/devops
>>> Current directory = /home/devops/TestProject_trunk
>>> Command line: rbt diff --debug
>>> Running: tf vc help
>>> Checking for a Bazaar repository...
>>> Unable to execute "bzr help": skipping Bazaar
>>> Checking for a ClearCase repository...
>>> Unable to execute "cleartool help": skipping ClearCase
>>> Checking for a CVS repository...
>>> Unable to execute "cvs": skipping CVS
>>> Checking for a Git repository...
>>> Running: git rev-parse --git-dir
>>> Command exited with rc 128: ['git', 'rev-parse', '--git-dir']
fatal: not a git repository (or any of the parent directories): .git
---
>>> Checking for a Mercurial repository...
>>> Unable to execute "hg --help": skipping Mercurial
>>> Checking for a Perforce repository...
>>> Unable to execute "p4 help": skipping Perforce
>>> Checking for a Plastic repository...
>>> Unable to execute "cm version": skipping Plastic
>>> Checking for a Subversion repository...
>>> Running: svn --non-interactive info
>>> Running: diff --version
>>> Running: svn --non-interactive --version -q
>>> Repository info: Path: https://scm-yvr-mirror.fortinet.com/svn/svntest, Base path: /TestProject/trunk, Supports changesets: False
>>> Checking for a Team Foundation Server repository...
>>> Unable to execute "tf help": skipping TFS
>>> Making HTTP GET request to https://reviewboard-test.corp.fortinet.com/api/
>>> Running: svn --non-interactive status -q --ignore-externals
>>> Running: svn --non-interactive diff --diff-cmd=diff --notice-ancestry -r BASE
>>> Running: svn --non-interactive info Test/test1
>>> Running: svn --non-interactive info Test
>>> Running: svn --non-interactive diff --diff-cmd=diff --notice-ancestry -r BASE --no-diff-deleted
b'Index: /TestProject/trunk/Test/test1\n===================================================================\n--- /TestProject/trunk/Test/test1\t(revision 26385)\n+++ /TestProject/trunk/Test/test1\t(working copy)\n@@ -1,5 +1,5 @@\n line1\n line2\n-line3\n+new line3\n line4\n line5\n'



Please provide any additional information below.