The go/printer (and thus gofmt) uses a heuristic to determine
whether to break alignment between elements of an expression
list which is spread across multiple lines. The heuristic only
kicked in if the entry sizes (character length) was above a
certain threshold (20) and the ratio between the previous and
current entry size was above a certain value (4).
This heuristic worked reasonably most of the time, but also
led to unfortunate breaks in many cases where a single entry
was suddenly much smaller (or larger) then the previous one.
The behavior of gofmt was sufficiently mysterious in some of
these situations that many issues were filed against it.
The simplest solution to address this problem is to remove
the heuristic altogether and have a programmer introduce
empty lines to force different alignments if it improves
readability. The problem with that approach is that the
places where it really matters, very long tables with many
(hundreds, or more) entries, may be machine-generated and
not "post-processed" by a human (e.g., unicode/utf8/tables.go).
If a single one of those entries is overlong, the result
would be that the alignment would force all comments or
values in key:value pairs to be adjusted to that overlong
value, making the table hard to read (e.g., that entry may
not even be visible on screen and all other entries seem
spaced out too wide).
Instead, we opted for a slightly improved heuristic that
behaves much better for "normal", human-written code.
1) The threshold is increased from 20 to 40. This disables
the heuristic for many common cases yet even if the alignment
is not "ideal", 40 is not that many characters per line with
todays screens, making it very likely that the entire line
remains "visible" in an editor.
2) Changed the heuristic to not simply look at the size ratio
between current and previous line, but instead considering the
geometric mean of the sizes of the previous (aligned) lines.
This emphasizes the "overall picture" of the previous lines,
rather than a single one (which might be an outlier).
3) Changed the ratio from 4 to 2.5. Now that we ignore sizes
below 40, a ratio of 4 would mean that a new entry would have
to be 4 times bigger (160) or smaller (10) before alignment
would be broken. A ratio of 2.5 seems more sensible.
Applied updated gofmt to all of src and misc. Also tested
against several former issues that complained about this
and verified that the output for the given examples is
satisfactory (added respective test cases).
Some of the files changed because they were not gofmt-ed
in the first place.
For #644.
For #7335.
For #10392.
(and probably more related issues)
Fixes#22852.
Change-Id: I5e48b3d3b157a5cf2d649833b7297b33f43a6f6e
As found by unparam. Picked the low-hanging fruit, consisting only of
errors that were always nil and results that were never used. Left out
those that were useful for consistency with other func signatures.
Change-Id: I06b52bbd3541f8a5d66659c909bd93cb3e172018
Reviewed-on: https://go-review.googlesource.com/102418
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
iana.org, www.iana.org and data.iana.org all present a valid TLS
certificate, so let's use it when fetching data or linking to
resources to avoid errors in transit.
Change-Id: Ib3ce7c19789c4e9d982a776b61d8380ddc63194d
Reviewed-on: https://go-review.googlesource.com/89416
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
CL 78735 description:
time: add space padding layout strings(using underscore) for not only day but others
As mentioned in #22802, only day component of layout string has space
padding(represented by one underscore before its placeholder). This
commit expands the rule for month, hour, minute and second.
Updates #22802 (maybe fixes it)
Revert this CL because it breaks currently working formats that happen
to use underscores.
Fixes#23259
Change-Id: I64acaaca9b5b74785ee0f0be7910574e87daa649
Reviewed-on: https://go-review.googlesource.com/85998
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
As mentioned in #22802, only day component of layout string has space
padding(represented by one underscore before its placeholder). This
commit expands the rule for month, hour, minute and second.
Updates #22802 (maybe fixes it)
Change-Id: I886998380489862ab9a324a6774f2e4cf7124122
Reviewed-on: https://go-review.googlesource.com/78735
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
The new example is shorter but illustrates the
interesting parts of the Unix function and methods.
Change-Id: Ief8ec38909d4ed7829e8d3da58e7b7f712537f99
Reviewed-on: https://go-review.googlesource.com/82079
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This reverts commit 08f19bbde1.
Reason for revert:
The changed transformation takes effect on a larger set
of code snippets than expected.
For example, this:
func foo() {
// Comment
bar()
}
becomes:
func foo() {
// Comment
bar()
}
This is an unintended consequence.
Change-Id: Ifca88d6267dab8a8170791f7205124712bf8ace8
Reviewed-on: https://go-review.googlesource.com/81335
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Joe Tsai <joetsai@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Tzinfo was replaced with TZData during the review of CL 68890, but this
instance was forgotten. Update it for consistency.
Follows CL 68890.
Updates #20629.
Change-Id: Id6d3c4f5f7572b01065f2db556db605452d1b570
Reviewed-on: https://go-review.googlesource.com/79176
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Some type renames were missing in the android file from CL 79017
Change-Id: I419215575ca7975241afb8d2069560c8b1d142c6
Reviewed-on: https://go-review.googlesource.com/79136
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The return values of the LoadLocation are inherently dependent
on the runtime environment. Add LoadLocationFromTZData, whose
results depend only on the timezone data provided as arguments.
Fixes#20629
Change-Id: I43b181f4c05c219be3ec57327540263b7cb3b2aa
Reviewed-on: https://go-review.googlesource.com/68890
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This allows LoadTimezoneFromTZData to have a parameter named data.
Change-Id: I11c115745c7f697244f806bcd654f697dab73de1
Reviewed-on: https://go-review.googlesource.com/79017
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This reverts commit 630d176e7d.
Reason for revert: the CL moves a parser for what appears to be an
Android-specific file format into the main code and makes it available
on all platforms. Android-specific file formats should be limited to
Android.
Change-Id: I3f19fe03673d65ed1446a0dcf95e5986053e10c0
Reviewed-on: https://go-review.googlesource.com/77950
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The simple example would contribute to better understanding
what function does.
Change-Id: I36a2952df8b0e1762ec0cd908a867c457f39366e
Reviewed-on: https://go-review.googlesource.com/75970
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Introduce the presence of the monotonic time reading first,
before the paragraph about comparison that mentions it multiple times.
Change-Id: I91e31e118be013eee6c258163a1bb2cb42501527
Reviewed-on: https://go-review.googlesource.com/76010
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
To improve readability when exported fields are removed,
forbid the printer from emitting an empty line before the first comment
in a const, var, or type block.
Also, when printing the "Has filtered or unexported fields." message,
add an empty line before it to separate the message from the struct
or interfact contents.
Before the change:
<<<
type NamedArg struct {
// Name is the name of the parameter placeholder.
//
// If empty, the ordinal position in the argument list will be
// used.
//
// Name must omit any symbol prefix.
Name string
// Value is the value of the parameter.
// It may be assigned the same value types as the query
// arguments.
Value interface{}
// contains filtered or unexported fields
}
>>>
After the change:
<<<
type NamedArg struct {
// Name is the name of the parameter placeholder.
//
// If empty, the ordinal position in the argument list will be
// used.
//
// Name must omit any symbol prefix.
Name string
// Value is the value of the parameter.
// It may be assigned the same value types as the query
// arguments.
Value interface{}
// contains filtered or unexported fields
}
>>>
Fixes#18264
Change-Id: I9fe17ca39cf92fcdfea55064bd2eaa784ce48c88
Reviewed-on: https://go-review.googlesource.com/71990
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
The comment on invalid time values in Constants and example
refers to _ zero padding when it should refer to space padding.
Change-Id: I5784356e389d324703e20eec6203f147db92880f
Reviewed-on: https://go-review.googlesource.com/75410
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The comment currently implies that a zero will be added, but the
underscore is used to add a space for single-digit dates.
Change-Id: Ib3bac8a16bc2d1fcb26ab3bb7ad172b89e1a4a24
Reviewed-on: https://go-review.googlesource.com/75230
Reviewed-by: Ian Lance Taylor <iant@golang.org>
For #9346#22135 explicitly state under layout constants
that they are not valid time values for Parse. Also add
examples of parsing valid RFC3339 values and the layout
to the example for time.Parse.
Fix capitalisation of time.Parse and Time.Format.
For #20869 include RFC3339 in the list of layouts that do
not accept all the time formats allowed by RFCs (lowercase z).
This does not fully address #20869.
Fixes#9346Fixes#22135
Change-Id: Ia4c13e5745de583db5ef7d5b1688d7768bc42c1b
Reviewed-on: https://go-review.googlesource.com/74231
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Loading location data from tzdata files was only supported
from default paths on android. This change enables support on
all OS via the ZONEINFO environment variable and reduces the
amount of android specific code significantly.
Furthermore, unsuccessful calls to LoadLocation now return the
first error encountered, including errors from attempting to
load a location from the source specified by ZONEINFO.
Errors indicating that the source or location was not found are
ignored until all possible sources have been traversed.
Change-Id: I45bc23b92253c9447f12f95f3ca29a7e613ed995
Reviewed-on: https://go-review.googlesource.com/67170
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Undoes this part of https://golang.org/cl/5447061 by using the
OS-specific open and close functions, and adding a read function.
Change-Id: If37ef43eb5df8554fc03f3922bbc2f785129bb9c
Reviewed-on: https://go-review.googlesource.com/66271
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Joe Tsai <joetsai@google.com>
Loading and testing timezones is currently implemented using several,
partly redundant, OS specific data structures and functions. This
change merges most of that code into OS independent implementations.
Change-Id: Iae2877c5f48d1e4a9de9ce55d0530d52e24cf96e
Reviewed-on: https://go-review.googlesource.com/64391
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
strings.LastIndexByte was introduced in go1.5 and it can be used
effectively wherever the second argument to strings.LastIndex is
exactly one byte long.
This avoids generating unnecessary string symbols and saves
a few calls to strings.LastIndex.
Change-Id: I7b5679d616197b055cffe6882a8675d24a98b574
Reviewed-on: https://go-review.googlesource.com/66372
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Do the low-hanging fruit - tiny Less functions that are used exactly
once. This reduces the amount of code and puts the logic in a single
place.
Change-Id: I9d4544cd68de5a95e55019bdad1fca0a1dbfae9c
Reviewed-on: https://go-review.googlesource.com/63171
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Return early from deltimer, with false as the result,
to indicate that we couldn't delete the timer since its
timersBucket was nil(not set) in the first place.
That happens in such a case where a user created
the timer from a Ticker with:
t := time.Ticker{C: c}
The above usage skips the entire setup of assigning
the appropriate underlying runtimeTimer and timersBucket,
steps that are done for us by time.NewTicker.
CL 34784 introduced this bug with an optimization, by changing
stopTimer to retrieve the timersBucket from the timer itself
(which is unset with the mentioned usage pattern above),
whereas the old behavior relied on indexing
by goroutine ID into the global slice of runtime
timers, to retrieve the appropriate timersBucket.
Fixes#21874
Change-Id: Ie9ccc6bdee685414b2430dc4aa74ef618cea2b33
Reviewed-on: https://go-review.googlesource.com/63970
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Change-Id: I14d19a3951fcae24e2c2ce2eb76312851e050fdd
Reviewed-on: https://go-review.googlesource.com/61033
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Change-Id: I86728a1c6c20471beaa3546ca7a43a8edeb9f0b7
Reviewed-on: https://go-review.googlesource.com/50691
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adrian Hesketh <adrianhesketh@hushmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Change-Id: Idad9cdee36679373ee223ff2bd4c021ea0afcce1
Reviewed-on: https://go-review.googlesource.com/61710
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The existing implementation will panic when month in date string is '---'.
Fixed#21113
Change-Id: I8058ae7a4102e882f8b7e9c65d80936b563265e4
Reviewed-on: https://go-review.googlesource.com/51010
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Saying that they return t unchanged is misleading, because they return
a modified t, stripped of any monotonic clock reading, as of Go 1.9.
Fixes#21485.
Change-Id: Icddf8813aed3d687fcefcd2fe542829438be6a0a
Reviewed-on: https://go-review.googlesource.com/56690
Reviewed-by: Avelino <t@avelino.xxx>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
I'm writing a matching implementation of the time package and missed
the "add one day in a leap year" block. This test would have caught my
error.
I understand we can't add test cases for every Date but it seems like
"tripped up someone attempting to reimplement this" is a good
indicator it may trip up people in the future.
Change-Id: I4c3b51e52e269215ec0e52199afe604482326edb
Reviewed-on: https://go-review.googlesource.com/56490
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
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lookupName is only called in one location, and one of the return
values is unused, so let's remove it.
Change-Id: I35e22c7ec611e8eb349deb4f0561e212f7d9de0b
Reviewed-on: https://go-review.googlesource.com/55232
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Probably went unnoticed because HTML normalizes multiple space
characters into one, unless you explicitly ask for them with .
Change-Id: I3f97b24a111da3f0f28894f1246388018beb084e
Reviewed-on: https://go-review.googlesource.com/54570
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Rob Pike <r@golang.org>
The testZoneAbbr assumes that
Parse(RFC1123, t1.Format(RFC1123))
will always succeed. This is not true because Format will fall back to
the numeric zone (ex. -07) for timezones with no abbreviation, but
Parse won't accept the numeric zone when the layout specifies 'MST'
(an abbreviation).
Skip the zone abbreviation test in timezones with no abbreviation.
Fixes#21183
Change-Id: If04691cc23ae1075d8a953733024e17f5a7646de
Reviewed-on: https://go-review.googlesource.com/52430
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
A common task is trying to get today's date in the local time zone
with zero values for the hour, minute, second, and nanosecond fields.
I tried this recently and incorrectly used Truncate(24*time.Hour),
which truncates based on a UTC clock, and gave me 5pm Pacific time
instead of midnight Pacific.
I thought it would be helpful to show a "correct" way to do this.
Change-Id: I479e6b0cc56367068530981ca69882b34febf945
Reviewed-on: https://go-review.googlesource.com/46833
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
t.Sub(u) would be -20 milliseconds.
The right computation is u.Sub(t), but rewrite to be even clearer.
Thanks to Karsten Weiss for catching this.
Change-Id: I6e274d69b0301840d57c5c65bf4114da0d33bf10
Reviewed-on: https://go-review.googlesource.com/46971
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Veselkov Konstantin
Robert Griesemer
Daniel Martí
Michael Kasch
Kunpei Sakai
Kevin Burke
Ian Lance Taylor
Hanjun Kim
Russ Cox
Joe Tsai
Dmitri Shuralyov
Brad Fitzpatrick
Florian Uekermann
Ross Chater
Adrian Hesketh
Radek Sohlich
Joe Tsai
Kenny Grant
Blixt
Marvin Stenger
Emmanuel Odeke
Aliaksandr Valialkin
Juan Carlos
Elbert Fliek
Cholerae Hu
molivier
Alberto Donizetti
Pat Moroney