Rather than the pseudo-wcwidth impl used currently, use the ICU
character properties database to calculate string width and
determine if a character is full width or not. This allows the
algorithm to correctly identify emoji's as full width, ensures
the algorithm will continue to fucntion properly as new unicode
codepoints are added, and it's faster.
This was originally part of a proposal to add a new unicode module,
but has been split out.
Refs: https://github.com/nodejs/node/pull/8075
PR-URL: https://github.com/nodejs/node/pull/9040
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Steven R Loomis <srloomis@us.ibm.com>
Fixes: https://github.com/nodejs/node/issues/8951
PR-URL: https://github.com/nodejs/node/pull/8953
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Emit two line events when there is a delay between
CR('\r') and LF('\n').
Introduced a new option `crlfDelay`. If the delay between \r and \n
exceeds `crlfDelay` milliseconds, both \r and \n will be treated as
separate end-of-line input. Default to 100 milliseconds.
`crlfDelay` will be coerced to [100, 2000] range.
PR-URL: https://github.com/nodejs/node/pull/8109
Reviewed-By: Yorkie Liu <yorkiefixer@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
When in `.editor` mode, current line whitespace prefixes
are preserved in the subsequent line. User can hit backspace
to clean the whitespace
```js
node 🙈 ₹ node
> .editor
// Entering editor mode (^D to finish, ^C to cancel)
function test() {
console.log('tested!'); //On enter, cursor will be after 2 spaces
_
```
PR-URL: https://github.com/nodejs/node/pull/8241
Reviewed-By: James M Snell <jasnell@gmail.com>
Show `TAB` completion suggestions only after the user has pressed `TAB`
twice in a row, so that the full list of suggestions doesn’t present
a distraction. The first time a `TAB` key is pressed, only partial
longest-common-prefix completion is performed.
This moves the `readline` autocompletion a lot closer to what e.g.
`bash` does.
Fixes: https://github.com/nodejs/node/issues/7665
PR-URL: https://github.com/nodejs/node/pull/7754
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Previously, one would have to call setPrompt after calling
rl.createInterface. Now, the prompt string can be set by passing the
prompt property.
PR-URL: https://github.com/nodejs/node/pull/7125
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Return the previous raw mode setting from the internal `_setRawMode`
so that is easier to reset it to its original state later.
PR-URL: https://github.com/nodejs/node/pull/6635
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Minor clean up. There are still some places in core that use
the legacy __defineGetter__ syntax. This updates most of those.
PR-URL: https://github.com/nodejs/node/pull/6768
Reviewed-By: Rich Trott <rtrott@gmail.com>
This commit removes the deprecated exports getStringWidth(),
stripVTControlCharacters(), and isFullWidthCodePoint(). It also
removes codePointAt() in its entirety, as it was deprecated and
not being used by core.
Refs: https://github.com/nodejs/node/pull/3862
PR-URL: https://github.com/nodejs/node/pull/6423
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
1. The `historySize` to default to `30` only if `undefined`.
2. If `historySize` is set to 0, then disable caching the line.
3. Added unit tests.
4. Updated documentation.
Fixes: https://github.com/nodejs/node/issues/6336
PR-URL: https://github.com/nodejs/node/pull/6352
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
reduce using RegExp for string test. This pull reuqest replaces
various usages of regular expressions in favor of the ES2015
startsWith and endsWith methods.
PR-URL: https://github.com/nodejs/node/pull/5753
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Remove a comment that has a word 'XXX'.
And add a line to output debuglog of error.
PR-URL: https://github.com/nodejs/node/pull/4690
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
With an indentation style of two spaces, it is not possible to indent
multiline variable declarations by four spaces. Instead, the var keyword
is used on every new line.
Use const instead of var where applicable for changed lines.
PR-URL: https://github.com/nodejs/io.js/pull/2286
Reviewed-By: Roman Reiss <me@silverwind.io>
This commit moves several of readline's undocumented functions
into an internal module. Specifically, isFullWidthCodePoint,
stripVTControlCharacters, getStringWidth, and emitKeys are
moved to the internal module. The existing public exports
of the first three functions are given a deprecation notice.
Refs: https://github.com/nodejs/node/pull/3847
Fixes: https://github.com/nodejs/node/issues/3836
PR-URL: https://github.com/nodejs/node/pull/3862
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
This commit fixes some error messages that are not consistent with
some general rules which most of the error messages follow.
PR-URL: https://github.com/nodejs/node/pull/3374
Reviewed-By: Roman Reiss <me@silverwind.io>
The `events` module already exports `EventEmitter` constructor function
So, we don't have to use `events.EventEmitter` to access it.
Refer: https://github.com/nodejs/node/pull/2896
PR-URL: https://github.com/nodejs/node/pull/2921
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
As per the discussion in #734, this patch deprecates the usage of
`EventEmitter.listenerCount` static function in the docs, and introduces
the `listenerCount` function in the prototype of `EventEmitter` itself.
PR-URL: https://github.com/nodejs/node/pull/2349
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
If tab completion is not being used, allow user to enter tab
characters.
PR-URL: https://github.com/nodejs/io.js/pull/1761
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>
`emitKeys` is a generator which emits `keypress` events in an infinite
loop. But if `keypress` event handler throws, the error stops the loop,
leaving generator in a broken state. So this patch restarts the generator
when an error occures.
PR-URL: https://github.com/nodejs/io.js/pull/2107
Reviewed-By: Christopher Monsanto <chris@monsan.to>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Changes included in this commit are
1. Making the deprecation messages consistent. The messages will be in
the following format
x is deprecated. Use y instead.
If there is no alternative for `x`, then the ` Use y instead.` part
will not be there in the message.
2. All the internal deprecation messages are printed with the prefix
`(node) `, except when the `--trace-deprecation` flag is set.
Fixes: https://github.com/nodejs/io.js/issues/1883
PR-URL: https://github.com/nodejs/io.js/pull/1892
Reviewed-By: Roman Reiss <me@silverwind.io>
If tab completion is not being used, allow user to enter tab
characters.
PR-URL: https://github.com/nodejs/io.js/pull/1761
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>
In certain environments escape sequences could be splitted into
multiple chunks. For example, when user presses left arrow,
`\x1b[D` sequence could appear as two keypresses (`\x1b` + `[D`).
PR-URL: https://github.com/iojs/io.js/pull/1601
Fixes: https://github.com/iojs/io.js/issues/1403
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
this creates a new internal module responsible for providing
the repl created via "iojs" or "iojs -i," and adds the following
options to the readline and repl subsystems:
* "repl mode" - determine whether a repl is strict mode, sloppy mode,
or auto-detect mode.
* historySize - determine the maximum number of lines a repl will store
as history.
The built-in repl gains persistent history support when the
NODE_REPL_HISTORY_FILE environment variable is set. This functionality
is not exposed to userland repl instances.
PR-URL: https://github.com/iojs/io.js/pull/1513
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Previously, we detected options object based on amount of arguments
supplied. But if we're calling readline without new operator,
constructor gets re-called and will always have 4 arguments.
PR-URL: https://github.com/iojs/io.js/pull/1385
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Many of the util.is*() methods used to check data types
simply compare against a single value or the result of
typeof. This commit replaces calls to these methods with
equivalent checks. This commit does not touch calls to the
more complex methods (isRegExp(), isDate(), etc.).
Fixes: https://github.com/iojs/io.js/issues/607
PR-URL: https://github.com/iojs/io.js/pull/647
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This commit replaces a number of var statements throughout
the lib code with const statements.
PR-URL: https://github.com/iojs/io.js/pull/541
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
The copyright and license notice is already in the LICENSE file. There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
Turn on strict mode for the files in the lib/ directory. It helps
catch bugs and can have a positive effect on performance.
PR-URL: https://github.com/node-forward/node/pull/64
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Passing null as the output stream to readline.Interface()'s constructor
is now supported. Any output written by readline is just discarded. It
makes it easier to use readline just as a line parser.
Fixes: https://github.com/joyent/node/issues/4408
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
Only run lineEnding.test() on the newly acquired chunk of string instead
of on the entire line buffer.
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
There was an underlying assumption in readline.emitKeypressEvents (and
by extension emitKey) that the given stream (usually process.stdin)
would emit 'data' once per keypress, which is not always the case.
This commit buffers the input stream and ensures a 'keypress' event is
triggered for every keypress (including escape codes).
Signed-off-by: Fedor Indutny <fedor@indutny.com>
Not removing 'end' listeners for input and output on the 'close' event
resulted in an EventEmitter related memory leak.
This issue also might be reproduced at:
https://github.com/npm/npm/issues/5203
Signed-off-by: Trevor Norris <trev.norris@gmail.com>
If an input stream would emit `end` event, like
`fs.createReadStream`, then readline need to get the last line
correctly even though that line isnt ended with `\n`.
On windows, libuv will immediately make a `ReadConsole` call (in the
thread pool) when a 'flowing' `uv_tty_t` handle is switched to
line-buffered mode. That causes an immediate issue for some users,
since libuv can't cancel the `ReadConsole` operation on Windows 8 /
Server 2012 and up if the program switches back to raw mode later.
But even if this will be fixed in libuv at some point, it's better to
avoid the overhead of starting work in the thread pool and immediately
cancelling it afther that.
See also f34f1e3, where the same change is made for the opposite
flow, e.g. move `resume()` after `_setRawMode(true)`.
Fixes #5927
This is a backport of dfb0461 (see #5930) to the v0.10 branch.
