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-rw-r--r--st.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/st.c b/st.c
index a2564f8..cf329fd 100644
--- a/st.c
+++ b/st.c
@@ -739,6 +739,10 @@ execsh(void) {
char **args;
char *envshell = getenv("SHELL");
+ unsetenv("COLUMNS");
+ unsetenv("LINES");
+ unsetenv("TERMCAP");
+
DEFAULT(envshell, SHELL);
putenv("TERM="TNAME);
args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};