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[Feature Request] Pretty-print named vectors and matrices?

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
30/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
r
Domain
cli

Research direction

Start by locating the existing pretty_print_code() implementation and reviewing how it formats output. Compare it with the named-vector and named-matrix examples, then clarify the desired color treatment and formatting behavior; the work is done when agreed output and coverage for both cases are established.

Written by the indexing model from the issue text.

Description

Hello,

I'd like to please request a function similar to pretty_print_code() to allow the printing of named vectors.

For example, in this snippet

x<-seq(0.001, 0.020, by = 0.001)
names(x) <- paste0("idx", 1:20)
x
#>  idx1  idx2  idx3  idx4  idx5  idx6  idx7  idx8  idx9 idx10 idx11 idx12 idx13 
#> 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.010 0.011 0.012 0.013 
#> idx14 idx15 idx16 idx17 idx18 idx19 idx20 
#> 0.014 0.015 0.016 0.017 0.018 0.019 0.020

Created on 2025-12-08 with reprex v2.1.1

I find it quite hard to separate the names of the vector from the vector values itself. A color coded way to differentiate the two would be greatly appreciated.

Edit:

While I'm at it, printing a named matrix would also be greatly appreciated.

Here's an example problem generated using Claude

# Create the matrix with random values
set.seed(123)  # For reproducibility
mat <- matrix(rnorm(400, mean = 50, sd = 15), nrow = 20, ncol = 20)

# Create row names
row_names <- paste0("Row_", sprintf("%02d", 1:20))

# Create column names
col_names <- paste0("Col_", sprintf("%02d", 1:20))

# Assign names
rownames(mat) <- row_names
colnames(mat) <- col_names

# Display the matrix
print(mat)
Dominant language
R
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Forks
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Avg merge
1d 18h
Merged PRs (30d)
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