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use ellipsis instead of ... in prettyprint #7766

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use ellipsis instead of ... in prettyprint #7766

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c80c86b
use ellipsis instead of ... in prettyprint
tomasy-j May 28, 2026
876581b
update tests 2253.20 and 2253.18
tomasy-j May 29, 2026
73bd140
check if UTF8 is supported for ellipsis, if not use dots
tomasy-j May 30, 2026
f0ddd1a
rm trailing whitespaces
tomasy-j May 30, 2026
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3 changes: 2 additions & 1 deletion R/print.data.table.R
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Original file line number Diff line number Diff line change
Expand Up @@ -253,7 +253,8 @@ char.trunc = function(x, trunc.char = getOption("datatable.prettyprint.char")) {
nchar_chars = nchar(x, 'char')
is_full_width = nchar_width > nchar_chars
idx = !is.na(x) & pmin(nchar_width, nchar_chars) > trunc.char
x[idx] = paste0(strtrim(x[idx], trunc.char * fifelse(is_full_width[idx], 2L, 1L)), "...")
dots = if (l10n_info()$'UTF-8') "\u2026" else "..."
x[idx] = paste0(strtrim(x[idx], trunc.char * fifelse(is_full_width[idx], 2L, 1L)), dots)
x
}

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14 changes: 7 additions & 7 deletions inst/tests/tests.Rraw
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Expand Up @@ -7266,7 +7266,7 @@ test(1514.9, fitsInInt64(9L), FALSE)
# #1091
options(datatable.prettyprint.char = 5L)
DT = data.table(x=1:2, y=c("abcdefghijk", "lmnopqrstuvwxyz"))
test(1515.1, grep("abcde...", capture.output(print(DT))), 2L)
test(1515.1, grep("abcde\u2026", capture.output(print(DT))), 2L)
options(datatable.prettyprint.char = NULL)

# test 1516: chain setnames() - used while mapping source to target columns
Expand Down Expand Up @@ -18147,7 +18147,7 @@ ja_ko = "\u3053"
ja_n = "\u3093"
nc = c(accented_a, ja_ichi, ja_ni, ja_ko, ja_n)
if (utf8_check(nc)) {
dots = "..."
dots = "\u2026"
clean_regex = "^\\d+:\\s+" # removes row numbering from beginning of output
# Tests for combining character latin a and acute accent, single row
DT = data.table(strrep(accented_a, 4L))
Expand All @@ -18173,24 +18173,24 @@ if (utf8_check(nc)) {
DT = data.table(paste0(ja_ichi), strrep(ja_ni, 2L), strrep(ja_ko, 3L), strrep(accented_a, 2L), "aaa")
test(2253.13, options=list(datatable.prettyprint.char = 4L), capture.output(print(DT))[-1L], paste("1:", ja_ichi, strrep(ja_ni, 2L), strrep(ja_ko, 3L), strrep(accented_a, 2L), "aaa"))
test(2253.14, options=list(datatable.prettyprint.char = 3L), capture.output(print(DT))[-1L], paste("1:", ja_ichi, strrep(ja_ni, 2L), strrep(ja_ko, 3L), strrep(accented_a, 2L), "aaa"))
test(2253.15, options=list(datatable.prettyprint.char = 2L), capture.output(print(DT))[-1L], paste("1:", ja_ichi, strrep(ja_ni, 2), paste0(strrep(ja_ko, 2), dots) , strrep(accented_a, 2), "aa..."))
test(2253.16, options=list(datatable.prettyprint.char = 1L), capture.output(print(DT))[-1L], paste("1:", ja_ichi, paste0(ja_ni, dots), paste0(ja_ko, dots), paste0(accented_a, dots), "a..."))
test(2253.15, options=list(datatable.prettyprint.char = 2L), capture.output(print(DT))[-1L], paste("1:", ja_ichi, strrep(ja_ni, 2), paste0(strrep(ja_ko, 2), dots) , strrep(accented_a, 2), "aa\u2026"))
test(2253.16, options=list(datatable.prettyprint.char = 1L), capture.output(print(DT))[-1L], paste("1:", ja_ichi, paste0(ja_ni, dots), paste0(ja_ko, dots), paste0(accented_a, dots), "a\u2026"))
# Tests for multiple columns, multiple rows
DT = data.table(strrep(ja_ko, 1:3L), strrep(ja_n, 2:4L), strrep(accented_a, 3))
test(2253.17, options=list(datatable.prettyprint.char = 4L), gsub(clean_regex, "", capture.output(print(DT))[-1L]),
c(paste0(ja_ko, " ", strrep(ja_n, 2L), " ", strrep(accented_a, 3L)),
paste0(strrep(ja_ko, 2L), " ", strrep(ja_n, 3L), " ", strrep(accented_a, 3L)),
paste(strrep(ja_ko, 3L), strrep(ja_n, 4L), strrep(accented_a, 3L))))
test(2253.18, options=list(datatable.prettyprint.char = 3L), gsub(clean_regex, "", capture.output(print(DT))[-1L]),
c(paste0(ja_ko, " ", strrep(ja_n, 2L), " ", strrep(accented_a, 3L)),
paste0(strrep(ja_ko, 2L), " ", strrep(ja_n, 3L), " ", strrep(accented_a, 3L)),
c(paste0(ja_ko, " ", strrep(ja_n, 2L), " ", strrep(accented_a, 3L)),
paste0(strrep(ja_ko, 2L), " ", strrep(ja_n, 3L), " ", strrep(accented_a, 3L)),
paste(strrep(ja_ko, 3L), paste0(strrep(ja_n, 3L), dots), strrep(accented_a, 3L))))
test(2253.19, options=list(datatable.prettyprint.char = 1L), gsub(clean_regex, "", capture.output(print(DT))[-1L]),
c(paste0(ja_ko, " ", paste0(ja_n, dots), " ", paste0(accented_a, dots)),
paste0(c(ja_ko, ja_n, accented_a), dots, collapse=" "),
paste0(c(ja_ko, ja_n, accented_a), dots, collapse=" ")))
# test for data.table with NA, #6441
test(2253.20, options=list(datatable.prettyprint.char = 1L), data.table(a = c("abc", NA)), output=" a\n1: a...\n2: <NA>")
test(2253.20, options=list(datatable.prettyprint.char = 1L), data.table(a = c("abc", NA)), output=" a\n1: a\u2026\n2: <NA>")
} else {
cat("Tests 2253* skipped because they need a UTF-8 locale.\n")
}})
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