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fix: count runes, not bytes, when wrapping help text - #2511
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Rohilalala wants to merge 1 commit into
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wrapLine measured lines and words with len, so text with multi-byte characters wrapped well before the wrapAt column. Count runes, as offset and the tabwriter that aligns the help output already do.
abitrolly
reviewed
Oct 28, 2026
Comment on lines
+506
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511
| // Like offset, count runes rather than bytes. | ||
| if wrapAt <= offset || utf8.RuneCountInString(input) <= wrapAt-offset { | ||
| return input | ||
| } | ||
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| lineWidth := wrapAt - offset |
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Suggested change
| lineWidth := wrapAt - offset | |
| // Like offset, count runes rather than bytes. | |
| if lineWidth <= 0 || utf8.RuneCountInString(input) <= lineWidth { | |
| return input | |
| } |
Contributor
|
LGTM. |
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What type of PR is this?
What this PR does / why we need it:
With
wrapAtset,wrapLinemeasured lines and words in bytes, so help text with multi-byte characters wrapped before the configured column. AtwrapAt30,app - ändert die Größe für Überprüfungbroke after "Größe"; it now breaks after "für".offsetand the tabwriter that aligns help output already count runes (#2493), and this makes wrapping agree with them. Wide East Asian characters still count as one column each, as they do in the tabwriter.Which issue(s) this PR fixes:
None.
Testing
TestWrapLineCountsRunesinhelp_test.go.Release Notes