On 2024-05-13 09:57, Bruno Haible wrote:
Note that in Gnulib, a human-readable comment # Autoconf macros for the stdio module. is just as trivial as this comment: # stdio_h.m4
Although that's true for experts, it's not necessarily true for beginners who are the main audience for the first line. A beginner won't know whether stdio_h.m4 is for the entire stdio module, or just for configuring the stdio.h replacement, or just for configuring the stdio implementation, or something else.
In general the first line could be quite helpful for a brief explanation of file contents, for non experts. Yes, this information can be put elsewhere in the .m4 file, but the first line is a better place for it.