-A (WIP) collection of portable, strict C99, single-header implementations of common libc extensions.
+A collection of portable, strict C99, single-header implementations of common libc extensions.
+
+All functions are implemented as macros expanding to an internal function reference, this allows to use the headers with no meta build system - it compiles even if the extensions are already present, see _How to_ on disabling this behaviour.
### How to
---
+### fgetln
+
+includes `fgetln()`
+
+---
+
### getopt\_long
-includes `getopt()`, `getsubopt()`, `getopt_long()` and `getopt_long_only`
+includes `getopt()`, `getsubopt()`, `getopt_long()` and `getopt_long_only()`
`getopt_long.h` has additional macros related to argument
-permuting, defining those enables it (GNU behaviour, will still be disabled with `$POSIXLY_CORRECT` set):
+permuting, defining those enables it per function (GNU behaviour, can still be disabled at runtime by setting `$POSIXLY_CORRECT`):
```
#define GETOPT_PERMUTE_ARGS
---
+### strdup
+
+includes `strdup()` and `strndup()`
+
+`strndup()` follows the latest standard, meaning that it copies at most _n_ chars, not _n_ + 1.
+Also, no standard specifies that `strndup()` should return less than _n_ if `strlen(s) + 1` < _n_, but this implementation does so.
+
+---
+
+### strlcat
+
+includes `strlcat()` and `strlcpy()`
+
+---
+
+### strtonum
+
+includes `strtonum()`