EC_VLOG(3)

✨ EC_VLOG(3) ✨

okay bestie, this one lives in the Libecoli Programmer's Manual and it's literally the function that makes your logs look cute and formatted instead of a hot mess 💅

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🌸 NAME 🌸

ec_vlog — bestie's job is literally just: log a formatted string. that's it. that's the whole vibe. 🎀

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🦋 SYNOPSIS 🦋

first, you gotta bring the header in like it's a plus-one:

#include <ecoli/log.h>

and then the actual queen herself:

int int ec_vlog(
    int                type,    /* The log type identifier. */
    enum ec_log_level  level,   /* The log level. */
    const char        *format,  /* The format string. */
    va_list            ap       /* The list of arguments. */
);

ngl the source literally writes int int up there and I am not touching it, not my business, not my problem 🙈 copy it exactly as-is or the compiler will humble you.

so like, quick tour of the squad:

• type — the log type identifier. which flavor of log are we doing.
• level — the log level. how loud are we being about it.
• format — the format string. the template, the blueprint, the vision ✨
• ap — the list of arguments. all the little pieces getting slotted into that format.

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💜 STRUCTURES 💜

here's enum ec_log_level, the mood ring of logging. lowest to highest panic, in order, no cap:

enum ec_log_level {
      EC_LOG_EMERG;
      EC_LOG_ALERT;
      EC_LOG_CRIT;
      EC_LOG_ERR;
      EC_LOG_WARNING;
      EC_LOG_NOTICE;
      EC_LOG_INFO;
      EC_LOG_DEBUG;
};

eight levels, all iconic, all doing their own thing 👑

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🔥 RETURN VALUE 🔥

• 0 on success — we ate, no crumbs 🫶
• -1 on error, and errno is set — it's giving "something went wrong and we're telling you why" 😭

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🌈 SEE ALSO 🌈

the whole friend group, go say hi:

• ec_log_fct_register(3)
• ec_log_level_set(3)
• ec_log_level_get(3)
• ec_log_name(3)
• ec_log(3)
• ec_log_default_cb(3)
• ec_log_type_register(3)

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👑 COPYRIGHT 👑

Copyright (C) 2010-2026 Olivier Matz, Robin Jarry.

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okay that's the whole page, mwah 💖 this was libecoli, dated 2026-06-11, and the man page answers to EC_VLOG(3). go log something gorgeous, bestie 🦋✨