v0.100

[KJhellico]

Version 0.100

Released July 6, 2026

• Refactor Zambia holidays and tests (Refactor Zambia holidays and tests #3635 by @PPsyrius)
• Add Chicago Mercantile Exchange (XCME) holidays (Add Chicago Mercantile Exchange (XCME) holidays #3617 by @pareshjoshij, @arkid15r, @KJhellico)
• Add Bolsa Mexicana de Valores (BMV) holidays (Add Bolsa Mexicana de Valores (BMV) holidays #3639 by @pareshjoshij)
• Change standard name of "Whit Sunday" holiday to "Pentecost" (Change standard name of "Whit Sunday" holiday to "Pentecost" #3657 by @KJhellico)
• Update India holidays: national holidays significant improvement (Update India holidays: national holidays significant improvement #3578 by @ankushhKapoor)
• Update Saudi Arabia holidays (Update Saudi Arabia holidays #3624 by @pareshjoshij)
• Update Singapore holidays: add 2027 public holidays (Update Singapore holidays: add 2027 public holidays #3632 by @PPsyrius)
• Update calendar download page (Update calendar download page #3626 by @pareshjoshij)
• Update documentation: enhance iCalendar export examples (Update documentation: enhance iCalendar export examples #3641 by @davidhedlund, @KJhellico)
• Update iCalendar generation tool (Update iCalendar generation tool #3640 by @KJhellico)
• Update some holidays Ukrainian translations (Update some holidays Ukrainian translations #3667 by @KJhellico)
• Migrate Malawi tests to new test case standards (Migrate Malawi tests to new test case standards #3633 by @VaishnaviBardapure)
• Migrate Mexico tests to new test case standards (Migrate Mexico tests to new test case standards #3648 by @VaishnaviBardapure, @KJhellico)
• Migrate Norway tests to new test case standards (Migrate Norway tests to new test case standards #3671 by @eeshsaxena)
• Migrate Zimbabwe tests to new test case standards (Migrate Zimbabwe tests to new test case standards #3653 by @eeshsaxena)

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (aa07086) to head (a2f107e).
⚠️ Report is 32 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##              main     #3683    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          316       318     +2     
  Lines        18930     19167   +237     
  Branches      2420      2457    +37     
==========================================
+ Hits         18930     19167   +237     

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[cubic-dev-ai]

4 issues found across 586 files

Confidence score: 3/5

• docs/js/downloads.js removed null-safe handling in dynamic header extraction, so empty or malformed ICS content can throw (undefined.match()/null[0]) and break the downloads page flow for users — restore defensive checks (or early-return guards) before merging.
• docs/examples.md shows --output as if YYYY placeholders are expanded, but the CLI treats that as a literal filename; merging as-is risks users producing incorrectly named files and automations built from the example misbehaving — update the example to a real path (or implement/document placeholder expansion explicitly).
• holidays/locale/en_CY/LC_MESSAGES/CY.po and holidays/locale/en_BQ/LC_MESSAGES/BQ.po contain inconsistent holiday names (“Pentecost Monday” vs “Pentecost”, and “Whit Sunday” vs project-standard “Pentecost”), which can surface incorrect labels in localized output — align the msgstr values with the intended holiday names before merge or in an immediate follow-up.

Not reviewed (too large): snapshots/countries/IN_MH.json (~2,917 lines), snapshots/countries/IN_GJ.json (~2,784 lines), snapshots/countries/IN_PB.json (~2,709 lines), snapshots/countries/IN_WB.json (~2,687 lines), snapshots/countries/IN_OD.json (~2,656 lines), snapshots/countries/IN_HP.json (~2,655 lines), snapshots/countries/IN_AP.json (~2,627 lines), snapshots/countries/IN_KA.json (~2,627 lines), snapshots/countries/IN_TS.json (~2,622 lines), snapshots/countries/IN_BR.json (~2,618 lines), and 28 more - if these are generated or fixture files, add them to ignored paths to exclude them from future reviews.

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="holidays/locale/en_CY/LC_MESSAGES/CY.po">

<violation number="1" location="holidays/locale/en_CY/LC_MESSAGES/CY.po:67">
P2: Translation mismatch: comment now reads "Pentecost Monday" but `msgstr` still says "Pentecost" (the Sunday). This holiday is the Monday after Pentecost, not Pentecost Sunday itself — the en_US locale (`holidays/locale/en_US/LC_MESSAGES/CY.po`) correctly translates it as "Pentecost Monday". Update the translation to match: `msgstr "Pentecost Monday"`.</violation>
</file>

<file name="holidays/locale/en_BQ/LC_MESSAGES/BQ.po">

<violation number="1" location="holidays/locale/en_BQ/LC_MESSAGES/BQ.po:62">
P3: The English translation for "Eerste Pinksterdag" still uses "Whit Sunday" in this locale, but the standard name has been changed to "Pentecost" project-wide — the other English locales (en_US/BQ, en_US/NL, en_US/SX) all use msgstr "Pentecost". Consider updating this to "Pentecost" for consistency.</violation>
</file>

<file name="docs/examples.md">

<violation number="1" location="docs/examples.md:697">
P2: The `--output` flag takes a literal file path — the tool does not replace `YYYY` with actual years. Running `holidays-ics US --years +10 --categories unofficial --output US_YYYY_YYYY_unofficial.ics` creates a file literally named `US_YYYY_YYYY_unofficial.ics`. Use a descriptive filename without placeholder tokens, e.g. `--output US_unofficial.ics`.</violation>
</file>

<file name="docs/js/downloads.js">

<violation number="1" location="docs/js/downloads.js:196">
P1: Remove null-safe fallbacks in the dynamic header extraction on downloads.js. If the ICS fetch returns empty content or an unexpected format, the code will crash with a `TypeError` at `undefined.match()` or `null[0]`. This was previously handled with optional chaining and a default fallback string.</violation>
</file>

<sub>Note: This PR contains a large number of files. cubic only reviews up to 200 files per PR, so some files may not have been reviewed. cubic prioritizes the most important files to review.

Re-trigger cubic</sub>

[cubic-dev-ai]

P1: Remove null-safe fallbacks in the dynamic header extraction on downloads.js. If the ICS fetch returns empty content or an unexpected format, the code will crash with a TypeError at undefined.match() or null[0]. This was previously handled with optional chaining and a default fallback string.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At docs/js/downloads.js, line 196:

<comment>Remove null-safe fallbacks in the dynamic header extraction on downloads.js. If the ICS fetch returns empty content or an unexpected format, the code will crash with a `TypeError` at `undefined.match()` or `null[0]`. This was previously handled with optional chaining and a default fallback string.</comment>

<file context>
@@ -193,18 +193,15 @@ function holidayDownloads() {
-            // Extract dynamic header or fallback to default
-            const dynamicHeader = results.find(text => text)?.match(/^BEGIN:VCALENDAR[\s\S]*?(?=BEGIN:VEVENT)/i)?.[0].trim()
-                || "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nCALSCALE:GREGORIAN";
+            const dynamicHeader = results
+                .find(text => text)
+                .match(/^[\s\S]*?CALSCALE:GREGORIAN/m)[0];
</file context>

[cubic-dev-ai]

P2: Translation mismatch: comment now reads "Pentecost Monday" but msgstr still says "Pentecost" (the Sunday). This holiday is the Monday after Pentecost, not Pentecost Sunday itself — the en_US locale (holidays/locale/en_US/LC_MESSAGES/CY.po) correctly translates it as "Pentecost Monday". Update the translation to match: msgstr "Pentecost Monday".

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At holidays/locale/en_CY/LC_MESSAGES/CY.po, line 67:

<comment>Translation mismatch: comment now reads "Pentecost Monday" but `msgstr` still says "Pentecost" (the Sunday). This holiday is the Monday after Pentecost, not Pentecost Sunday itself — the en_US locale (`holidays/locale/en_US/LC_MESSAGES/CY.po`) correctly translates it as "Pentecost Monday". Update the translation to match: `msgstr "Pentecost Monday"`.</comment>

<file context>
@@ -64,7 +64,7 @@ msgstr "Easter Monday"
 msgstr "Labour Day"
 
-#. Whit Monday.
+#. Pentecost Monday.
 msgid "Δευτέρα του Αγίου Πνεύματος"
 msgstr "Pentecost"
</file context>

[cubic-dev-ai]

P2: The --output flag takes a literal file path — the tool does not replace YYYY with actual years. Running holidays-ics US --years +10 --categories unofficial --output US_YYYY_YYYY_unofficial.ics creates a file literally named US_YYYY_YYYY_unofficial.ics. Use a descriptive filename without placeholder tokens, e.g. --output US_unofficial.ics.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At docs/examples.md, line 697:

<comment>The `--output` flag takes a literal file path — the tool does not replace `YYYY` with actual years. Running `holidays-ics US --years +10 --categories unofficial --output US_YYYY_YYYY_unofficial.ics` creates a file literally named `US_YYYY_YYYY_unofficial.ics`. Use a descriptive filename without placeholder tokens, e.g. `--output US_unofficial.ics`.</comment>

<file context>
@@ -626,47 +626,100 @@ For installation instructions, see `uv` [documentation](https://docs.astral.sh/u
 
 ```shell
-holidays-ics US --years 2025-2027 --output us_holidays.ics
+holidays-ics US --years +10 --categories unofficial --output US_YYYY_YYYY_unofficial.ics

</file context>

</details>

```suggestion
holidays-ics US --years +10 --categories unofficial --output US_unofficial.ics

[cubic-dev-ai]

P3: The English translation for "Eerste Pinksterdag" still uses "Whit Sunday" in this locale, but the standard name has been changed to "Pentecost" project-wide — the other English locales (en_US/BQ, en_US/NL, en_US/SX) all use msgstr "Pentecost". Consider updating this to "Pentecost" for consistency.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At holidays/locale/en_BQ/LC_MESSAGES/BQ.po, line 62:

<comment>The English translation for "Eerste Pinksterdag" still uses "Whit Sunday" in this locale, but the standard name has been changed to "Pentecost" project-wide — the other English locales (en_US/BQ, en_US/NL, en_US/SX) all use msgstr "Pentecost". Consider updating this to "Pentecost" for consistency.</comment>

<file context>
@@ -59,7 +59,7 @@ msgstr "Labour Day"
 msgstr "Ascension Day"
 
-#. Whit Sunday.
+#. Pentecost.
 msgid "Eerste Pinksterdag"
 msgstr "Whit Sunday"
</file context>