From 4d00262a8ebd3c8a0f3679a710b6bb8657bf2ca1 Mon Sep 17 00:00:00 2001 From: Eli Zaretskii Date: Fri, 15 Feb 2019 12:22:49 +0200 Subject: [PATCH] Support ~USER for some names on MS-Windows * src/w32.c (getpwnam): Support usernames provided through LOGNAME or USERNAME environment variables, to mimic what editfns.c:init_editfns does. --- src/w32.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/src/w32.c b/src/w32.c index c75a4f918d3..197f6ddee2f 100644 --- a/src/w32.c +++ b/src/w32.c @@ -2091,7 +2091,29 @@ getpwnam (char *name) return pw; if (xstrcasecmp (name, pw->pw_name)) - return NULL; + { + /* Mimic what init_editfns does with these environment + variables, so that the likes of ~USER is recognized by + expand-file-name even if $LOGNAME gives a name different from + the real username produced by the process token. */ + char *logname = getenv ("LOGNAME"); + char *username = getenv ("USERNAME"); + if ((logname || username) + && xstrcasecmp (name, logname ? logname : username) == 0) + { + static struct passwd alias_user; + static char alias_name[PASSWD_FIELD_SIZE]; + + memcpy (&alias_user, &dflt_passwd, sizeof dflt_passwd); + alias_name[0] = '\0'; + strncat (alias_name, logname ? logname : username, + PASSWD_FIELD_SIZE - 1); + alias_user.pw_name = alias_name; + pw = &alias_user; + } + else + return NULL; + } return pw; } -- 2.39.5