FcCharSetMerge(3)

💖 FcCharSetMerge(3) 💖

🌸 NAME 🌸

okay bestie, welcome to the FcCharSetMerge(3) manual page! This one is all about FcCharSetMerge — Merge charsets. It’s giving “combine two charset besties into one” energy. 🫶

✨ SYNOPSIS ✨

#include <fontconfig/fontconfig.h>

FcBool FcCharSetMerge (FcCharSet *a, const FcCharSet *b, FcBool *changed);

🦋 DESCRIPTION 🦋

okay so the main character move: adds all chars in b to a. Literally all of them, straight into a. 💅

In other words, this is the in-place version of FcCharSetUnion. No new set to carry around — a is getting the glow-up. ✨

If changed is not NULL, then it returns whether any new chars from b were added to a. So you can peek at changed and know if the merge actually brought new chars to the party. 🎀

Returns FcFalse on failure, either when a is a constant set or from running out of memory. 😭

no cap, those are the failure cases listed here: constant-set a, or OOM. Keep that in mind, bestie. 💀

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mwah 💋 — source/version: Fontconfig 2.17.0 · date: 27 June 2025 · page: FcCharSetMerge(3). periodt. 👑