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buf.c: fix bug in environment variable expansion

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Allow underscore in environment variable names.

Closes issue #439

Helped-by: @Consolatis
...who both found the bug and told us how to fix it :)
This commit is contained in:
Johan Malm 2022-07-15 20:29:49 +01:00 • committed by Consolatis
parent 884ad60e1b
commit fd7ec0ab95
1 changed files with 1 additions and 1 deletions
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2
src/common/buf.c
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@ -28,7 +28,7 @@ buf_expand_shell_variables(struct buf *s)
environment_variable.len = 0; environment_variable.len = 0;
buf_add(&environment_variable, s->buf + i + 1); buf_add(&environment_variable, s->buf + i + 1);
char *p = environment_variable.buf; char *p = environment_variable.buf;
while (isalnum(*p) || *p == '{' || *p == '}') { while (isalnum(*p) || *p == '_' || *p == '{' || *p == '}') {
++p; ++p;
} }
*p = '\0'; *p = '\0';