pager: do not try to run an empty pager command If pagercmd is explicitly set to '', the pager process would exit silently and the output would be lost. We'd better disable the pager in such case.

graphlog: restore pager lost at 1cec1d863008

gitweb: add "more" and "less" navigation links in filelog template

context: also return ancestor's line range in blockancestors

context: add a followfirst flag to blockancestors

py3: use pycompat.fsencode() to convert __file__ to bytes __file__ returns unicodes on Python 3. This patch uses pycompat.fsencode() to convert them to bytes.

wireproto: remove unused code Removed an unused line introduced by f3807a135e43.

color: set initial default value for 'colormode' to None This should not introduce any behavior changes when using the color extension. In practive, the colormode will be setup at early at run time to the proper value (from config and environment). We do this change as this gets us closer of a state were we can have all the mechanisms associated to color in core with the feature disabled by default.

color: minor reversal of two conditional clause for clarity Another minor cleanup while reading the code. The two branches of the conditional have similar complexity so we go for the order that give us the simplest condition (we drop the negation).

color: merge two identical 'for' loops The previous changeset made it clear that we are iterating twice on the same items. We gather the two loops into a single one.