This narrows the range of Unicode codepoints fish reserves for its own
use from U+E000 thru U+F8FE (6399 codepoints) to U+F600 thru U+F73F (320
codepoints). This is still not ideal since fish shouldn't be using any
Unicode private-use codepoints but it's a step in the right direction.
This partially addresses issue #2684.
All versions of fish prior to this change silently discarded anything written
to stderr while source a config.fish file. Apparently just to avoid having
the source command display an error if the file did not exist. This can mask
real problems. So instead this change explicitly checks whether the file is
readable and silently skips sourcing it if it isn't.
Resolves issue #2702.
Before this change, `fish ./test.fish` would fully resolve the
relative paths and symlinks of test.fish, as reported by `status -f`.
However `source` would not. With this change, both cases return relative
paths. `realpath` may be used by scripts to resolve them.
Fixes#2643
While investigating issue #2619 my first thought was that the problem
had something to do with the "is_interactive_session" global variable.
That preliminary conclusion appears to be wrong (i.e., the problem
lies elsewhere). However, that hypothesis caused me to look at function
"fish_parse_opt" and other mentions of "is_interactive_session".
I decided to take the opportunity to simplify and improve the style of
"fish_parse_opt" since I just spent an hour reviewing the code that
references "is_interactive_session". For example, the "has_cmd" variable
isn't really needed. And there is inconsistent whitespace not to mention
confusion about bool's versus int's and zero versus NULL.
This change moves source files into a src/ directory,
and puts object files into an obj/ directory. The Makefile
and xcode project are updated accordingly.
Fixes#1866
