Concourse script output doesn't handle carriage returns #83
Description
For instance, when downloading blobs bosh will use carriage returns to reprint the % downloaded. The output ends up looking craaaaazy:
[snip]
)downloading 280.6M (62%)downloading 280.6M (66%)downloading 280.6M (68%)downloading 280.6M (71%)downloading 280.6M (74%)downloading 280.6M (77%)downloading 280.6M (80%)downloading 280.6M (83%)downloading 280.6M (85%)downloading 280.6M (88%)downloading 280.6M (92%)downloading 280.6M (95%)downloading 280.6M (96%)downloading 280.6M (100%)downloading 280.6M (100%)downloading 280.6M (100%)downloadedstaticfile-buildpack/staticfile_buildpack...
downloading 2.4Mdownloading 2.4M (0%)downloading 2.4M (64%)downloading 2.4M (100%)downloadednodejs-buildpack/nodejs_buildpack-cached-...
downloading 38.9Mdownloading 38.9M (0%)downloading 38.9M (2%)downloading 38.9M (15%)downloading 38.9M (38%)downloading 38.9M (52%)downloading 38.9M (75%)downloading 38.9M (93%)downloading 38.9M (100%)downloadedpython-buildpack/python_buildpack-cached-...
downloading 175.8Mdownloading 175.8M (0%)downloading 175.8M (0%)downloading 175.8M (0%)downloading 175.8M (5%)downloading 175.8M (8%)downloading 175.8M (12%)downloading 175.8M (15%)downloading 175.8M (19%)downloading 175.8M (23%)downloading 175.8M (27%)downloading 175.8M (27%)downloading 175.8M (27%)downloading 175.8M (33%)downloading 175.8M (37%)downloading 175.8M (41%)downloading 175.8M (45%)downloading 175.8M (49%)downloading 175.8M (53%)downloading 175.8M (57%)downloading 175.8M (61%)downloading 175.8M (66%)downloading 175.8M (70%)downloading 175.8M (76%)downloading 175.8M (80%)downloading 175.8M (85%)downloading 175.8M (91%)downloading 175.8M (96%)downloading 175.8M (100%)downloading 175.8M (100%)downloadedphp-buildpack/php_buildpack-cached-v4.0.0...
downloading 449.4Mdownloading 449.4M (0%)downloading 449.4M (0%)downloading 449.4M (0%)downloading 449.4M (2%)downloading 449.4M (5%)downloading 449.4M (7%)downloading 449.4M (9%)downloading 449.4M (10%)downloading 449.4M (13%)downloading 449.4M (15%)downloading 449.4M (17%)downloading 449.4M (19%)downloading 449.4M (22%)downloading 449.4M (23%)downloading 449.4M (24%)downloading 449.4M (26%)downloading 449.4M (27%)downloading 449.4M (28%)downloading 449.4M (29%)downloading 449.4M (31%)downloading 449.4M (33%)downloading 449.4M (34%)downloading 449.4M (35%)downloading 449.4M (37%)downloading 449.4M (38%)downloading 449.4M (40%)downloading 449.4M (41%)downloading 449.4M (43%)downloading 449.4M (45%)downloading 449.4M (46%)downloading 449.4M (48%)downloading 449.4M (49%)downloading 449.4M (51%)downloading 449.4M (53%)downloading 449.4M (54%)downloading 449.4M (55%)downloading 449.4M (56%)downloading 449.4M (56%)downloading 449.4M (57%)downloading 449.4M (57%)downloading 449.4M (60%)downloading 449.4M (62%)downloading 449.4M (64%)downloading 449.4M (66%)downloading 449.4M (68%)downloading 449.4M (70%)downloading 449.4M (73%)downloading 449.4M (74%)downloading 449.4M (76%)downloading 449.4M (78%)downloading 449.4M (80%)downloading 449.4M (81%)downloading 449.4M (82%)downloading 449.4M (84%)downloading 449.4M (85%)downloading 449.4M (87%)downloading 449.4M (88%)downloading 449.4M (89%)downloading 449.4M (90%)downloading 449.4M (91%)downloading 449.4M (92%)downloading 449.4M (93%)downloading 449.4M (95%)downloading 449.4M (96%)downloading 449.4M (97%)downloading 449.4M (98%)downloading 449.4M (99%)downloading 449.4M (100%)downloading 449.4M (100%)downloading 449.4M (100%)downloading 449.4M (100%)downloadedTotal: 42, 2.4G
No blobs to upload
I'm not sure if there's an easy way to handle this when rendering the relevant HTML.