This is used in ttyshots to get deterministic outputs.
This command is prefixed with - since I'd like to eventually move rand and
randint into their own module, so this command will be moved too.
Styled text is not supposed to "inherit" the current SGR styling context when
written to the terminal. This has always been the intention, but not correctly
implemented. This commit fixes that for both styled segments and styled texts.
Tests are amended to account for the difference in the output.
With context insensitivity correctly implemented, there is now no need for a
"default" color. It is functionally equivalent to a lack of color.
The parsing of SGR still needs to be aware of the codes 39 (default foreground)
and 49 (default background), but these codes are now translated into FgDefault
and BgDefault, which resets the foreground and background color fields.
In addition to fixing the encoding bugs standardize on \xNN notation for
bytes rather than \uNNNN; e.g., \x00 rather than \u0000.
Also, update the documentation for double-quoted strings to include the
\e sequence.
Fixes#1528
Qualified imports of pkg/tt outnumber unqualified (27 to 24). Improve
consistency, and clarity, by changing the dot (unqualified) imports of
that package symbols to qualified.
Qualified imports of pkg/testutil outnumber unqualified (55 to 7). Improve
consistency, and clarity, by changing the dot (unqualified) imports of
that package symbols to qualified.
The PureEvaler abstraction made things unnecessarily complex; it's better to
just create a real Evaler for tests is pretty.
The Evaler has a new ReplaceBuiltin method to make it easier to construct the
expected test result.
cmp.Diff panics when comparing a struct that has unexported fields and no String
or Equal method, so change some structs to either export all their fields or
have an Equal method.
This fixes#1136.
* Require at least one of "except" or "finally" to be present. This fixes#1424.
* Rename "except" to "catch". The former will be deprecated from 0.18.0. This
addresses #1497.
Also remove support for the "name" field tag from eval.scanOptions - it's not
used anywhere and the use case it was intended for is handled by CamelToDashed.
- Revise the introduction section.
- Link to the notes on commands taking value inputs from all such commands.
- Revise the doc on the "all" command.
- Revise references to the builtin module from the language reference.
* docs(effective-elvish): follow same style as other docs
e.g., https://elv.sh/ref/language.html
* docs(builtin): ref from take to drop
* docs(language): remove mention of :up and :down ns
* docs(fundamentals): update to new lambda format
* docs(tour): update to new lambda syntax
* docs(builtin): update to new lambda syntax
* docs(language): update to new lambda syntax
* docs(unique-semantics): update to new lambda syntax
* docs(tour): fix typo
* Revert "docs(effective-elvish): follow same style as other docs"
This reverts commit db4306a400c61f5f7b6acec7a1e1f39feb9b1ba0.
https://github.com/elves/elvish/pull/1457#discussion_r775102178
* Remove a superfluous line break in the equivalent Elvish code.
* Keep code in transcripts on the same line to be correctly highlited.
* Add another example using digit-only argument names.
The `AnyError` placeholder error can cause tests to succeed for errors
other than what was expected. That is, the use of `AnyError` can mask
bugs in a unit test. So replace it with the specific error, or error type,
the test expects to be raised.
This does not remove the anyError structure because it is used in
the TestCase.DoesNotCompile() method. To keep the size of this change
as small as possible I want to defer updating that use to a separate
change. However, remove the public AnyError var so future test writers
don't attempt to use it.
When the destination to scan into is an interface, its zero value is simply a
nil interface, losing the information of the original type and resulting in
error messages like "need nil, got $actual-type".
ScanToGo now handles this case specifically, and uses the string representation
of the interface type in the error message.
Before:
~> ns []
Exception: wrong type of argument 0: wrong type: need nil, got list
~> var x~ = x
Exception: wrong type: need nil, got string
After:
~> ns []
Exception: wrong type of argument 0: wrong type: need !!hashmap.Map, got list
~> var x~ = x
Exception: wrong type: need !!eval.Callable, got string
This is still not ideal, since the "need" type is not given as an Elvish "kind",
but it's much less confusing than than old "need nil" messages.
This fixes#715.
* Fix the case when start is near the overflow point and add regression tests.
* Rewrite the implementation in a less abstract way.
* Rewrite the elvdoc.
This simple optimization improves the performance of pipelines containing only
one form drastically. Pipelines containing more than one form also execute a
little bit faster.
A subset of the benchmark results, on MacBook Air M1 2020:
| Benchmark | Before | After | Speedup |
| --------- | ----------- | ----------- | ------- |
| nop | 3398 ns/op | 934.1 ns/op | 3.6x |
| nop-nop | 13596 ns/op | 11423 ns/op | 1.2x |
| put-x | 4163 ns/op | 1611 ns/op | 2.6x |
I was surprised to see so many legacy lambda syntax examples in the
documentation. This replaces all of them with the new syntax -- excluding
the handful of cases meant to explicitly verify the legacy form is still
valid. This also adds a link to the issue in the release notes which
documents the change in syntax.
Related #664
Expose the default comparison function used by the `builtin:order`
command as a command in its own right. This command is useful when
writing, in Elvish, something like `builtin:order`. Such as a semantic
version comparison command.
Resolves#1347
A recent IM question, and subsequent discussion, resulted in @hhanche
commenting that if you need to explicitly move the output of `printf`
from the byte to the value stream you should use `slurp` rather than
`put` or `from-lines`. Include that insight in the `printf`
documentation.
Some of the variables are added after the Evaler is created, but that change was
not synchronized back to the copy of the builtin module that is imported with
"use builtin".
This fixes#1414.
This has always been the documented behavior, but up until this point, "set"
actually behaved like the legacy assignment form, which creates the variable if
it doesn't exist yet.
This fixes the discrepancy. Addresses #645.
Non-portable ones are moved into new packages pkg/sys/e{unix windows}. The "e"
prefix is needed to avoid conflict with packages under golang.org/x/sys/ and can
mean "extra".
- Move from pkg/eval/mods to pkg/mods
- Introduce mods.AddTo that adds all standard library modules
- Move epm and readline-binding into their own packages
Replaces uses of the deprecated builtin `prclose` and `pwclose` commands
with `file close` in unit tests.
This also fixes one test that was not verifying what it intended due to
it's use of `.Throws(AnyError)` which was matching an Elvish error caused
by invalid command `file:prclose $p`.
Courtesy of @zzamboni this updates the example of how to use the
`run-parallel` command to capture the stdout and stderr byte streams
independent of each other.
Resolves#1357
