On the pier seaside 3.0 code-branch, browsing to: http://localhost:8080/pier/environment/style.css, results in:

#[47 42 32 98 108 117 101 112 114 105 110 ...

rather than:

/* blueprint patches */

h1, h2, h3, h4, h5, h6 { margin: 0; fo....

This issue is caused by a change in how ByteArray is rendered in Seaside 3.0 (the problem was also present prior to merging the latest Pier code):

seaside 2.8

Object>>encodeOn: aDocument

aDocument print: self displayStriong

seaside 3.0

Object>>encodeOn: aDocument

aDocument print: self greaseString

ByteArray>>greaseString

"ByteArrays should not automatically be converted to Strings. You should use a GRCodec for this."

^ self printString

changing ByteArray>>greaseString to return self displayString fixes the problem. However I can see there are a number of ways to fix this, and as it's such a low level change I'm sure there was a good reason for displayString to be changed to printString. Thoughts?