[BUG] bar example is broken with GR backend: colors do not show up properly

[mroavi]

Details

The example presented in bar's help seems to be broken: the specified colors do not show up properly.

Minimal example:

❯ julia
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.6.0 (2021-03-24)
 _/ |\__'_|_|_|\__'_|  |
|__/                   |

julia> using Plots

help?> bar
search: bar barh bar! barh! barhist barhist! baremodule SubArray GlobalRef clipboard BitArray backtrace rgba_string BitMatrix catch_backtrace AbstractRGB AbstractRGBA AbstractRange AbstractGray AbstractArray

  bar(x,y)
  bar!(x,y)


  Make a bar plot of y vs x.

  Arguments
  ≡≡≡≡≡≡≡≡≡≡≡

    •  bar_position: Symbol. Choose from :overlay (default), :stack. (warning: May not be implemented fully)

    •  bar_width: nothing or Number. Width of bars in data coordinates. When nothing, chooses based on x (or y when orientation = :h).

    •  bar_edges: Bool. Align bars to edges (true), or centers (the default)?

    •  orientation: Symbol. Horizontal or vertical orientation for bar types. Values :h, :hor, :horizontal correspond to horizontal (sideways, anchored to y-axis), and :v, :vert, and :vertical correspond to
       vertical (the default).

  Examples
  ≡≡≡≡≡≡≡≡≡≡

  julia> bar([1,2,3],[4,5,6],fillcolor=[:red,:green,:blue],fillalpha=[0.2,0.4,0.6])
  julia> bar([(1,4),(2,5),(3,6)])


julia> bar([1,2,3],[4,5,6],fillcolor=[:red,:green,:blue],fillalpha=[0.2,0.4,0.6])
┌ Warning: Indices Base.OneTo(3) of attribute `fillcolor` does not match data indices 1:17.
└ @ Plots ~/.julia/packages/Plots/SVksJ/src/utils.jl:102
┌ Info: Data contains NaNs or missing values, and indices of `fillcolor` vector do not match data indices.
│ If you intend elements of `fillcolor` to apply to individual NaN-separated segements in the data,
│ pass each segment in a separate vector instead, and use a row vector for `fillcolor`. Legend entries
│ may be suppressed by passing an empty label.
│ For example,
└     plot([1:2,1:3], [[4,5],[3,4,5]], label=["y" ""], fillcolor=[1 2])
┌ Warning: Indices Base.OneTo(3) of attribute `fillalpha` does not match data indices 1:17.
└ @ Plots ~/.julia/packages/Plots/SVksJ/src/utils.jl:102
┌ Info: Data contains NaNs or missing values, and indices of `fillalpha` vector do not match data indices.
│ If you intend elements of `fillalpha` to apply to individual NaN-separated segements in the data,
│ pass each segment in a separate vector instead, and use a row vector for `fillalpha`. Legend entries
│ may be suppressed by passing an empty label.
│ For example,
└     plot([1:2,1:3], [[4,5],[3,4,5]], label=["y" ""], fillalpha=[1 2])

Plot:

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)	X
pyplot			X
plotly			X
plotlyjs			X
pgfplotsx			X
inspectdr			X

Versions

Plots.jl version: [91a5bcdd] Plots v1.11.2
Backend version (]st -m): [28b8d3ca] GR v0.57.1
Output of versioninfo():

Julia Version 1.6.0
Commit f9720dc2eb (2021-03-24 12:55 UTC)
Platform Info:
OS: Linux (x86_64-pc-linux-gnu)
CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-11.0.1 (ORCJIT, skylake)

[bvolkmer]

This bug was introduced in version v1.11.0. In version v1.10.6 it works.

[daisy12321]

Bump this issue. The bug is bisected to this commit: 42b3c56

[BeastyBlacksmith]

Fixed in #3751